./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.BOUNDED-10.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 77d80771821c1cd45088b62d9d16474928a377618be5caefce4c7c3ebfdda084 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:18:58,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:18:58,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:18:58,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:18:58,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:18:58,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:18:58,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:18:58,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:18:58,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:18:58,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:18:58,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:18:58,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:18:58,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:18:58,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:18:58,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:18:58,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:18:58,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:18:58,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:18:58,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:18:58,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:18:58,899 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:18:58,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:18:58,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:18:58,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:18:58,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:18:58,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:18:58,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:18:58,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:18:58,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:18:58,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:18:58,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:18:58,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:18:58,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:18:58,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:18:58,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:18:58,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:18:58,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:18:58,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:18:58,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:18:58,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:18:58,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:18:58,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:18:58,926 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:18:58,941 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:18:58,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:18:58,941 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:18:58,941 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:18:58,942 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:18:58,942 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:18:58,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:18:58,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:18:58,943 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:18:58,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:18:58,948 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:18:58,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:18:58,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:18:58,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:18:58,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:18:58,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:18:58,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:18:58,949 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:18:58,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:18:58,950 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:18:58,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:18:58,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:18:58,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:18:58,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:18:58,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:18:58,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:18:58,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:18:58,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:18:58,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:18:58,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:18:58,952 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:18:58,952 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:18:58,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:18:58,952 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77d80771821c1cd45088b62d9d16474928a377618be5caefce4c7c3ebfdda084 [2022-07-13 18:18:59,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:18:59,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:18:59,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:18:59,178 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:18:59,189 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:18:59,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.BOUNDED-10.pals.c [2022-07-13 18:18:59,246 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8a4022cf/38a138df63a246e8b3a0e23a533b4648/FLAG6fa1af3b8 [2022-07-13 18:18:59,614 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:18:59,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.BOUNDED-10.pals.c [2022-07-13 18:18:59,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8a4022cf/38a138df63a246e8b3a0e23a533b4648/FLAG6fa1af3b8 [2022-07-13 18:18:59,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8a4022cf/38a138df63a246e8b3a0e23a533b4648 [2022-07-13 18:18:59,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:18:59,637 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:18:59,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:18:59,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:18:59,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:18:59,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:18:59" (1/1) ... [2022-07-13 18:18:59,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fe6075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:59, skipping insertion in model container [2022-07-13 18:18:59,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:18:59" (1/1) ... [2022-07-13 18:18:59,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:18:59,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:18:59,837 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.BOUNDED-10.pals.c[11857,11870] [2022-07-13 18:18:59,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:18:59,844 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:18:59,883 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.BOUNDED-10.pals.c[11857,11870] [2022-07-13 18:18:59,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:18:59,894 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:18:59,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:59 WrapperNode [2022-07-13 18:18:59,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:18:59,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:18:59,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:18:59,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:18:59,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:59" (1/1) ... [2022-07-13 18:18:59,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:59" (1/1) ... [2022-07-13 18:18:59,934 INFO L137 Inliner]: procedures = 27, calls = 46, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 410 [2022-07-13 18:18:59,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:18:59,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:18:59,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:18:59,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:18:59,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:59" (1/1) ... [2022-07-13 18:18:59,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:59" (1/1) ... [2022-07-13 18:18:59,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:59" (1/1) ... [2022-07-13 18:18:59,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:59" (1/1) ... [2022-07-13 18:18:59,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:59" (1/1) ... [2022-07-13 18:18:59,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:59" (1/1) ... [2022-07-13 18:18:59,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:59" (1/1) ... [2022-07-13 18:18:59,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:18:59,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:18:59,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:18:59,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:18:59,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:59" (1/1) ... [2022-07-13 18:18:59,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:19:00,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:00,011 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 18:19:00,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 18:19:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:19:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2022-07-13 18:19:00,040 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2022-07-13 18:19:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-07-13 18:19:00,040 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-07-13 18:19:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2022-07-13 18:19:00,040 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2022-07-13 18:19:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2022-07-13 18:19:00,040 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2022-07-13 18:19:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2022-07-13 18:19:00,041 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2022-07-13 18:19:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:19:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:19:00,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:19:00,121 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:19:00,122 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:19:00,542 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:19:00,548 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:19:00,551 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 18:19:00,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:19:00 BoogieIcfgContainer [2022-07-13 18:19:00,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:19:00,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:19:00,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:19:00,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:19:00,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:18:59" (1/3) ... [2022-07-13 18:19:00,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32959260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:19:00, skipping insertion in model container [2022-07-13 18:19:00,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:18:59" (2/3) ... [2022-07-13 18:19:00,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32959260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:19:00, skipping insertion in model container [2022-07-13 18:19:00,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:19:00" (3/3) ... [2022-07-13 18:19:00,560 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.2.ufo.BOUNDED-10.pals.c [2022-07-13 18:19:00,570 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:19:00,570 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:19:00,610 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:19:00,614 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4ee2ee35, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@282be9bc [2022-07-13 18:19:00,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:19:00,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 144 states have (on average 1.6041666666666667) internal successors, (231), 148 states have internal predecessors, (231), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-07-13 18:19:00,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-13 18:19:00,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:00,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:00,625 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:00,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:00,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1040694260, now seen corresponding path program 1 times [2022-07-13 18:19:00,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:00,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109185613] [2022-07-13 18:19:00,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:00,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:19:00,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:00,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109185613] [2022-07-13 18:19:00,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109185613] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:00,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:00,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:00,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577713971] [2022-07-13 18:19:00,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:00,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:00,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:00,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:00,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:00,880 INFO L87 Difference]: Start difference. First operand has 183 states, 144 states have (on average 1.6041666666666667) internal successors, (231), 148 states have internal predecessors, (231), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:19:00,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:00,974 INFO L93 Difference]: Finished difference Result 371 states and 633 transitions. [2022-07-13 18:19:00,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:00,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-07-13 18:19:00,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:00,986 INFO L225 Difference]: With dead ends: 371 [2022-07-13 18:19:00,987 INFO L226 Difference]: Without dead ends: 187 [2022-07-13 18:19:00,991 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 [2022-07-13 18:19:00,993 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 18 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:00,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 820 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:01,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-07-13 18:19:01,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2022-07-13 18:19:01,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 146 states have (on average 1.5273972602739727) internal successors, (223), 149 states have internal predecessors, (223), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-07-13 18:19:01,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 287 transitions. [2022-07-13 18:19:01,063 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 287 transitions. Word has length 15 [2022-07-13 18:19:01,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:01,064 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 287 transitions. [2022-07-13 18:19:01,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:19:01,065 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 287 transitions. [2022-07-13 18:19:01,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 18:19:01,067 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:01,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:01,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 18:19:01,068 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:01,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:01,069 INFO L85 PathProgramCache]: Analyzing trace with hash 899781387, now seen corresponding path program 1 times [2022-07-13 18:19:01,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:01,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345969470] [2022-07-13 18:19:01,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:01,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:01,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:19:01,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:01,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345969470] [2022-07-13 18:19:01,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345969470] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:01,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:01,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:01,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970402580] [2022-07-13 18:19:01,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:01,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:01,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:01,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:01,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:01,124 INFO L87 Difference]: Start difference. First operand 185 states and 287 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:19:01,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:01,190 INFO L93 Difference]: Finished difference Result 383 states and 597 transitions. [2022-07-13 18:19:01,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:01,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-13 18:19:01,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:01,193 INFO L225 Difference]: With dead ends: 383 [2022-07-13 18:19:01,195 INFO L226 Difference]: Without dead ends: 201 [2022-07-13 18:19:01,196 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 [2022-07-13 18:19:01,198 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 25 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:01,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 829 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:01,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-07-13 18:19:01,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 198. [2022-07-13 18:19:01,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 157 states have (on average 1.5095541401273886) internal successors, (237), 160 states have internal predecessors, (237), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-13 18:19:01,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 303 transitions. [2022-07-13 18:19:01,211 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 303 transitions. Word has length 16 [2022-07-13 18:19:01,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:01,211 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 303 transitions. [2022-07-13 18:19:01,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:19:01,211 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 303 transitions. [2022-07-13 18:19:01,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-13 18:19:01,212 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:01,212 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] [2022-07-13 18:19:01,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 18:19:01,213 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:01,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:01,213 INFO L85 PathProgramCache]: Analyzing trace with hash 977089285, now seen corresponding path program 1 times [2022-07-13 18:19:01,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:01,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552464545] [2022-07-13 18:19:01,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:01,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:01,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:01,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:19:01,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:01,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552464545] [2022-07-13 18:19:01,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552464545] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:01,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:01,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:19:01,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948031125] [2022-07-13 18:19:01,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:01,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:19:01,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:01,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:19:01,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:19:01,245 INFO L87 Difference]: Start difference. First operand 198 states and 303 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 18:19:01,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:01,271 INFO L93 Difference]: Finished difference Result 415 states and 643 transitions. [2022-07-13 18:19:01,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:19:01,271 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, (3), 2 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 23 [2022-07-13 18:19:01,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:01,276 INFO L225 Difference]: With dead ends: 415 [2022-07-13 18:19:01,277 INFO L226 Difference]: Without dead ends: 227 [2022-07-13 18:19:01,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:19:01,279 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 22 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:01,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 563 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:01,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-07-13 18:19:01,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 200. [2022-07-13 18:19:01,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 159 states have (on average 1.5031446540880504) internal successors, (239), 162 states have internal predecessors, (239), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-13 18:19:01,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 305 transitions. [2022-07-13 18:19:01,299 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 305 transitions. Word has length 23 [2022-07-13 18:19:01,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:01,300 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 305 transitions. [2022-07-13 18:19:01,300 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 18:19:01,301 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 305 transitions. [2022-07-13 18:19:01,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-13 18:19:01,306 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:01,306 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] [2022-07-13 18:19:01,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 18:19:01,307 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:01,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:01,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1386108362, now seen corresponding path program 1 times [2022-07-13 18:19:01,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:01,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389155441] [2022-07-13 18:19:01,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:01,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:01,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:01,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:01,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:19:01,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:01,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389155441] [2022-07-13 18:19:01,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389155441] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:01,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:01,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:01,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165156045] [2022-07-13 18:19:01,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:01,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:01,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:01,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:01,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:01,392 INFO L87 Difference]: Start difference. First operand 200 states and 305 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 18:19:01,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:01,450 INFO L93 Difference]: Finished difference Result 454 states and 708 transitions. [2022-07-13 18:19:01,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:01,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2022-07-13 18:19:01,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:01,453 INFO L225 Difference]: With dead ends: 454 [2022-07-13 18:19:01,453 INFO L226 Difference]: Without dead ends: 305 [2022-07-13 18:19:01,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:01,456 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 130 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:01,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 864 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:01,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-07-13 18:19:01,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 200. [2022-07-13 18:19:01,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 159 states have (on average 1.4779874213836477) internal successors, (235), 162 states have internal predecessors, (235), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-13 18:19:01,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 301 transitions. [2022-07-13 18:19:01,469 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 301 transitions. Word has length 31 [2022-07-13 18:19:01,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:01,470 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 301 transitions. [2022-07-13 18:19:01,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 18:19:01,470 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 301 transitions. [2022-07-13 18:19:01,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-13 18:19:01,471 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:01,471 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] [2022-07-13 18:19:01,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 18:19:01,472 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:01,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:01,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1610752054, now seen corresponding path program 1 times [2022-07-13 18:19:01,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:01,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707500896] [2022-07-13 18:19:01,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:01,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:01,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:01,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:01,519 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:19:01,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:01,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707500896] [2022-07-13 18:19:01,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707500896] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:01,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:01,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:19:01,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151215429] [2022-07-13 18:19:01,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:01,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:19:01,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:01,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:19:01,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:01,522 INFO L87 Difference]: Start difference. First operand 200 states and 301 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 18:19:01,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:01,566 INFO L93 Difference]: Finished difference Result 390 states and 591 transitions. [2022-07-13 18:19:01,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:01,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2022-07-13 18:19:01,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:01,570 INFO L225 Difference]: With dead ends: 390 [2022-07-13 18:19:01,570 INFO L226 Difference]: Without dead ends: 202 [2022-07-13 18:19:01,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:01,574 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 0 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:01,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1092 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:01,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-07-13 18:19:01,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2022-07-13 18:19:01,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 159 states have (on average 1.471698113207547) internal successors, (234), 162 states have internal predecessors, (234), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-13 18:19:01,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 300 transitions. [2022-07-13 18:19:01,583 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 300 transitions. Word has length 32 [2022-07-13 18:19:01,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:01,583 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 300 transitions. [2022-07-13 18:19:01,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 18:19:01,584 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 300 transitions. [2022-07-13 18:19:01,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-13 18:19:01,584 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:01,584 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] [2022-07-13 18:19:01,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 18:19:01,585 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:01,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:01,585 INFO L85 PathProgramCache]: Analyzing trace with hash 839076892, now seen corresponding path program 1 times [2022-07-13 18:19:01,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:01,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293864749] [2022-07-13 18:19:01,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:01,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:01,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:01,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:01,632 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:19:01,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:01,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293864749] [2022-07-13 18:19:01,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293864749] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:01,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412472368] [2022-07-13 18:19:01,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:01,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:01,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:01,648 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) [2022-07-13 18:19:01,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 18:19:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:01,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 18:19:01,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:01,773 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:19:01,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:19:01,825 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:19:01,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412472368] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:19:01,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:19:01,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2022-07-13 18:19:01,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471550939] [2022-07-13 18:19:01,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:19:01,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:19:01,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:01,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:19:01,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:01,827 INFO L87 Difference]: Start difference. First operand 200 states and 300 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 18:19:01,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:01,867 INFO L93 Difference]: Finished difference Result 448 states and 687 transitions. [2022-07-13 18:19:01,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:01,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2022-07-13 18:19:01,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:01,870 INFO L225 Difference]: With dead ends: 448 [2022-07-13 18:19:01,870 INFO L226 Difference]: Without dead ends: 259 [2022-07-13 18:19:01,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:01,875 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 66 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:01,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1082 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:01,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-07-13 18:19:01,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 253. [2022-07-13 18:19:01,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 202 states have (on average 1.4504950495049505) internal successors, (293), 205 states have internal predecessors, (293), 43 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-07-13 18:19:01,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 379 transitions. [2022-07-13 18:19:01,894 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 379 transitions. Word has length 35 [2022-07-13 18:19:01,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:01,895 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 379 transitions. [2022-07-13 18:19:01,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 18:19:01,895 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 379 transitions. [2022-07-13 18:19:01,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-13 18:19:01,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:01,897 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:01,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:02,107 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,SelfDestructingSolverStorable5 [2022-07-13 18:19:02,108 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:02,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:02,108 INFO L85 PathProgramCache]: Analyzing trace with hash 346203964, now seen corresponding path program 2 times [2022-07-13 18:19:02,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:02,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585699437] [2022-07-13 18:19:02,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:02,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-13 18:19:02,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:02,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585699437] [2022-07-13 18:19:02,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585699437] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:02,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:02,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:02,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272399670] [2022-07-13 18:19:02,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:02,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:02,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:02,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:02,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:02,188 INFO L87 Difference]: Start difference. First operand 253 states and 379 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 18:19:02,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:02,226 INFO L93 Difference]: Finished difference Result 486 states and 748 transitions. [2022-07-13 18:19:02,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:02,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2022-07-13 18:19:02,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:02,230 INFO L225 Difference]: With dead ends: 486 [2022-07-13 18:19:02,230 INFO L226 Difference]: Without dead ends: 262 [2022-07-13 18:19:02,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:02,232 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 19 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:02,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 807 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:02,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-07-13 18:19:02,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 260. [2022-07-13 18:19:02,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 208 states have (on average 1.4471153846153846) internal successors, (301), 211 states have internal predecessors, (301), 43 states have call successors, (43), 8 states have call predecessors, (43), 8 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-07-13 18:19:02,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 387 transitions. [2022-07-13 18:19:02,250 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 387 transitions. Word has length 57 [2022-07-13 18:19:02,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:02,250 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 387 transitions. [2022-07-13 18:19:02,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 18:19:02,250 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 387 transitions. [2022-07-13 18:19:02,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-13 18:19:02,251 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:02,253 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:02,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 18:19:02,253 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:02,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:02,254 INFO L85 PathProgramCache]: Analyzing trace with hash -562676277, now seen corresponding path program 1 times [2022-07-13 18:19:02,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:02,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550139549] [2022-07-13 18:19:02,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:02,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,330 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-13 18:19:02,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:02,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550139549] [2022-07-13 18:19:02,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550139549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:02,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:02,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:02,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355964395] [2022-07-13 18:19:02,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:02,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:02,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:02,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:02,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:02,332 INFO L87 Difference]: Start difference. First operand 260 states and 387 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 18:19:02,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:02,363 INFO L93 Difference]: Finished difference Result 530 states and 800 transitions. [2022-07-13 18:19:02,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:02,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2022-07-13 18:19:02,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:02,365 INFO L225 Difference]: With dead ends: 530 [2022-07-13 18:19:02,365 INFO L226 Difference]: Without dead ends: 299 [2022-07-13 18:19:02,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:02,368 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 24 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:02,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 821 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:02,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-07-13 18:19:02,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 296. [2022-07-13 18:19:02,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 240 states have (on average 1.4083333333333334) internal successors, (338), 243 states have internal predecessors, (338), 46 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-07-13 18:19:02,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 430 transitions. [2022-07-13 18:19:02,382 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 430 transitions. Word has length 57 [2022-07-13 18:19:02,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:02,384 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 430 transitions. [2022-07-13 18:19:02,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 18:19:02,384 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 430 transitions. [2022-07-13 18:19:02,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-13 18:19:02,385 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:02,385 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 18:19:02,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 18:19:02,386 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:02,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:02,386 INFO L85 PathProgramCache]: Analyzing trace with hash 747834355, now seen corresponding path program 1 times [2022-07-13 18:19:02,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:02,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046186342] [2022-07-13 18:19:02,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:02,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:02,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,469 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-13 18:19:02,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:02,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046186342] [2022-07-13 18:19:02,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046186342] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:02,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:02,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:19:02,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060176149] [2022-07-13 18:19:02,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:02,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:19:02,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:02,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:19:02,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:02,470 INFO L87 Difference]: Start difference. First operand 296 states and 430 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 18:19:02,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:02,493 INFO L93 Difference]: Finished difference Result 541 states and 799 transitions. [2022-07-13 18:19:02,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:02,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 75 [2022-07-13 18:19:02,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:02,496 INFO L225 Difference]: With dead ends: 541 [2022-07-13 18:19:02,496 INFO L226 Difference]: Without dead ends: 298 [2022-07-13 18:19:02,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:02,498 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 0 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:02,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1092 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:02,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-07-13 18:19:02,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 296. [2022-07-13 18:19:02,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 240 states have (on average 1.3958333333333333) internal successors, (335), 243 states have internal predecessors, (335), 46 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-07-13 18:19:02,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 427 transitions. [2022-07-13 18:19:02,508 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 427 transitions. Word has length 75 [2022-07-13 18:19:02,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:02,508 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 427 transitions. [2022-07-13 18:19:02,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 18:19:02,508 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 427 transitions. [2022-07-13 18:19:02,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-13 18:19:02,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:02,509 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:02,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 18:19:02,509 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:02,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:02,509 INFO L85 PathProgramCache]: Analyzing trace with hash -951154883, now seen corresponding path program 1 times [2022-07-13 18:19:02,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:02,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195978533] [2022-07-13 18:19:02,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:02,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:02,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,601 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-07-13 18:19:02,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:02,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195978533] [2022-07-13 18:19:02,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195978533] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:02,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:02,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:02,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466670392] [2022-07-13 18:19:02,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:02,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:02,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:02,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:02,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:02,604 INFO L87 Difference]: Start difference. First operand 296 states and 427 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 18:19:02,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:02,636 INFO L93 Difference]: Finished difference Result 578 states and 855 transitions. [2022-07-13 18:19:02,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:02,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 104 [2022-07-13 18:19:02,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:02,639 INFO L225 Difference]: With dead ends: 578 [2022-07-13 18:19:02,639 INFO L226 Difference]: Without dead ends: 340 [2022-07-13 18:19:02,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:02,640 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 25 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:02,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 821 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:02,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-07-13 18:19:02,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 337. [2022-07-13 18:19:02,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 277 states have (on average 1.3610108303249098) internal successors, (377), 280 states have internal predecessors, (377), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-07-13 18:19:02,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 475 transitions. [2022-07-13 18:19:02,652 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 475 transitions. Word has length 104 [2022-07-13 18:19:02,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:02,653 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 475 transitions. [2022-07-13 18:19:02,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 18:19:02,653 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 475 transitions. [2022-07-13 18:19:02,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 18:19:02,657 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:02,657 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:02,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 18:19:02,657 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:02,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:02,658 INFO L85 PathProgramCache]: Analyzing trace with hash 598920618, now seen corresponding path program 1 times [2022-07-13 18:19:02,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:02,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019207447] [2022-07-13 18:19:02,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:02,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,718 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-13 18:19:02,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:02,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019207447] [2022-07-13 18:19:02,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019207447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:02,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:02,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:02,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745712738] [2022-07-13 18:19:02,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:02,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:02,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:02,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:02,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:02,720 INFO L87 Difference]: Start difference. First operand 337 states and 475 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 18:19:02,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:02,751 INFO L93 Difference]: Finished difference Result 604 states and 875 transitions. [2022-07-13 18:19:02,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:19:02,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 105 [2022-07-13 18:19:02,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:02,753 INFO L225 Difference]: With dead ends: 604 [2022-07-13 18:19:02,753 INFO L226 Difference]: Without dead ends: 331 [2022-07-13 18:19:02,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:02,755 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 15 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:02,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 780 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:02,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-07-13 18:19:02,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2022-07-13 18:19:02,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 272 states have (on average 1.3419117647058822) internal successors, (365), 275 states have internal predecessors, (365), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-07-13 18:19:02,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 461 transitions. [2022-07-13 18:19:02,773 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 461 transitions. Word has length 105 [2022-07-13 18:19:02,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:02,774 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 461 transitions. [2022-07-13 18:19:02,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 18:19:02,774 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 461 transitions. [2022-07-13 18:19:02,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 18:19:02,775 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:02,775 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 18:19:02,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 18:19:02,775 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:02,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:02,775 INFO L85 PathProgramCache]: Analyzing trace with hash -590102049, now seen corresponding path program 1 times [2022-07-13 18:19:02,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:02,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938487247] [2022-07-13 18:19:02,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:02,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,827 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-07-13 18:19:02,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:02,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938487247] [2022-07-13 18:19:02,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938487247] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:02,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:02,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:19:02,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065227592] [2022-07-13 18:19:02,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:02,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:19:02,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:02,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:19:02,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:02,828 INFO L87 Difference]: Start difference. First operand 331 states and 461 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-13 18:19:02,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:02,846 INFO L93 Difference]: Finished difference Result 579 states and 824 transitions. [2022-07-13 18:19:02,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:02,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 124 [2022-07-13 18:19:02,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:02,848 INFO L225 Difference]: With dead ends: 579 [2022-07-13 18:19:02,848 INFO L226 Difference]: Without dead ends: 333 [2022-07-13 18:19:02,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:02,849 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 0 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:02,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1077 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:02,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-07-13 18:19:02,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 331. [2022-07-13 18:19:02,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 272 states have (on average 1.3308823529411764) internal successors, (362), 275 states have internal predecessors, (362), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-07-13 18:19:02,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 458 transitions. [2022-07-13 18:19:02,858 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 458 transitions. Word has length 124 [2022-07-13 18:19:02,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:02,858 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 458 transitions. [2022-07-13 18:19:02,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-13 18:19:02,858 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 458 transitions. [2022-07-13 18:19:02,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 18:19:02,859 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:02,859 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:02,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 18:19:02,859 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:02,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:02,860 INFO L85 PathProgramCache]: Analyzing trace with hash -717601583, now seen corresponding path program 1 times [2022-07-13 18:19:02,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:02,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029091074] [2022-07-13 18:19:02,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:02,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-07-13 18:19:02,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:02,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029091074] [2022-07-13 18:19:02,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029091074] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:02,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:02,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:02,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800337950] [2022-07-13 18:19:02,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:02,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:02,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:02,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:02,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:02,935 INFO L87 Difference]: Start difference. First operand 331 states and 458 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-13 18:19:02,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:02,971 INFO L93 Difference]: Finished difference Result 542 states and 784 transitions. [2022-07-13 18:19:02,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:19:02,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 157 [2022-07-13 18:19:02,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:02,973 INFO L225 Difference]: With dead ends: 542 [2022-07-13 18:19:02,973 INFO L226 Difference]: Without dead ends: 329 [2022-07-13 18:19:02,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:02,974 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 13 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:02,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 748 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:02,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-07-13 18:19:02,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2022-07-13 18:19:02,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 271 states have (on average 1.3284132841328413) internal successors, (360), 274 states have internal predecessors, (360), 47 states have call successors, (47), 10 states have call predecessors, (47), 10 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-07-13 18:19:02,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 454 transitions. [2022-07-13 18:19:02,981 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 454 transitions. Word has length 157 [2022-07-13 18:19:02,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:02,987 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 454 transitions. [2022-07-13 18:19:02,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-13 18:19:02,987 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 454 transitions. [2022-07-13 18:19:02,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-13 18:19:02,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:02,989 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:02,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 18:19:02,989 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:02,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:02,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1055792649, now seen corresponding path program 1 times [2022-07-13 18:19:02,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:02,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975551402] [2022-07-13 18:19:02,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:02,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,055 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2022-07-13 18:19:03,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:03,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975551402] [2022-07-13 18:19:03,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975551402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:03,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:03,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:03,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397721038] [2022-07-13 18:19:03,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:03,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:03,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:03,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:03,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:03,056 INFO L87 Difference]: Start difference. First operand 329 states and 454 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 18:19:03,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:03,088 INFO L93 Difference]: Finished difference Result 482 states and 680 transitions. [2022-07-13 18:19:03,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:03,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 172 [2022-07-13 18:19:03,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:03,090 INFO L225 Difference]: With dead ends: 482 [2022-07-13 18:19:03,090 INFO L226 Difference]: Without dead ends: 312 [2022-07-13 18:19:03,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:03,091 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 35 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:03,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 729 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:03,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-07-13 18:19:03,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2022-07-13 18:19:03,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 257 states have (on average 1.3190661478599222) internal successors, (339), 260 states have internal predecessors, (339), 44 states have call successors, (44), 10 states have call predecessors, (44), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-07-13 18:19:03,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 427 transitions. [2022-07-13 18:19:03,098 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 427 transitions. Word has length 172 [2022-07-13 18:19:03,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:03,098 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 427 transitions. [2022-07-13 18:19:03,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 18:19:03,098 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 427 transitions. [2022-07-13 18:19:03,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-13 18:19:03,099 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:03,100 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:03,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 18:19:03,100 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:03,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:03,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1214123782, now seen corresponding path program 1 times [2022-07-13 18:19:03,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:03,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232519992] [2022-07-13 18:19:03,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:03,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,162 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2022-07-13 18:19:03,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:03,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232519992] [2022-07-13 18:19:03,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232519992] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:03,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:03,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:03,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978600019] [2022-07-13 18:19:03,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:03,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:03,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:03,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:03,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:03,163 INFO L87 Difference]: Start difference. First operand 312 states and 427 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 18:19:03,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:03,199 INFO L93 Difference]: Finished difference Result 465 states and 653 transitions. [2022-07-13 18:19:03,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:03,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 174 [2022-07-13 18:19:03,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:03,201 INFO L225 Difference]: With dead ends: 465 [2022-07-13 18:19:03,201 INFO L226 Difference]: Without dead ends: 293 [2022-07-13 18:19:03,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:03,201 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 30 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:03,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 733 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:03,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-07-13 18:19:03,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2022-07-13 18:19:03,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 241 states have (on average 1.3112033195020747) internal successors, (316), 244 states have internal predecessors, (316), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-07-13 18:19:03,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 398 transitions. [2022-07-13 18:19:03,208 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 398 transitions. Word has length 174 [2022-07-13 18:19:03,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:03,208 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 398 transitions. [2022-07-13 18:19:03,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 18:19:03,208 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 398 transitions. [2022-07-13 18:19:03,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-13 18:19:03,209 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:03,209 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:03,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 18:19:03,210 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:03,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:03,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1416861431, now seen corresponding path program 1 times [2022-07-13 18:19:03,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:03,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444081101] [2022-07-13 18:19:03,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:03,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-07-13 18:19:03,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:03,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444081101] [2022-07-13 18:19:03,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444081101] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:03,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:03,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:19:03,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108437373] [2022-07-13 18:19:03,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:03,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:19:03,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:03,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:19:03,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:03,281 INFO L87 Difference]: Start difference. First operand 293 states and 398 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-13 18:19:03,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:03,306 INFO L93 Difference]: Finished difference Result 445 states and 623 transitions. [2022-07-13 18:19:03,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:03,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 175 [2022-07-13 18:19:03,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:03,308 INFO L225 Difference]: With dead ends: 445 [2022-07-13 18:19:03,308 INFO L226 Difference]: Without dead ends: 293 [2022-07-13 18:19:03,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:03,309 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 0 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:03,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1056 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:03,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-07-13 18:19:03,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2022-07-13 18:19:03,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 241 states have (on average 1.2863070539419088) internal successors, (310), 244 states have internal predecessors, (310), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-07-13 18:19:03,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 392 transitions. [2022-07-13 18:19:03,317 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 392 transitions. Word has length 175 [2022-07-13 18:19:03,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:03,318 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 392 transitions. [2022-07-13 18:19:03,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-13 18:19:03,318 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 392 transitions. [2022-07-13 18:19:03,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-13 18:19:03,320 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:03,320 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:03,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 18:19:03,320 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:03,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:03,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1467403298, now seen corresponding path program 1 times [2022-07-13 18:19:03,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:03,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884464668] [2022-07-13 18:19:03,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:03,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,410 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-07-13 18:19:03,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:03,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884464668] [2022-07-13 18:19:03,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884464668] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:03,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112694345] [2022-07-13 18:19:03,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:03,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:03,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:03,425 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) [2022-07-13 18:19:03,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 18:19:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 18:19:03,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:03,591 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-07-13 18:19:03,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:19:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-07-13 18:19:03,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112694345] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:03,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 18:19:03,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2022-07-13 18:19:03,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977090794] [2022-07-13 18:19:03,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:03,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:03,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:03,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:03,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:03,689 INFO L87 Difference]: Start difference. First operand 293 states and 392 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-13 18:19:03,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:03,722 INFO L93 Difference]: Finished difference Result 466 states and 645 transitions. [2022-07-13 18:19:03,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:19:03,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 182 [2022-07-13 18:19:03,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:03,730 INFO L225 Difference]: With dead ends: 466 [2022-07-13 18:19:03,730 INFO L226 Difference]: Without dead ends: 272 [2022-07-13 18:19:03,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:03,731 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 35 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:03,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 501 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:03,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-07-13 18:19:03,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2022-07-13 18:19:03,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 223 states have (on average 1.2780269058295963) internal successors, (285), 226 states have internal predecessors, (285), 38 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-13 18:19:03,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 361 transitions. [2022-07-13 18:19:03,739 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 361 transitions. Word has length 182 [2022-07-13 18:19:03,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:03,740 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 361 transitions. [2022-07-13 18:19:03,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-13 18:19:03,740 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 361 transitions. [2022-07-13 18:19:03,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-13 18:19:03,741 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:03,742 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:03,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:03,952 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,SelfDestructingSolverStorable16 [2022-07-13 18:19:03,952 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:03,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:03,953 INFO L85 PathProgramCache]: Analyzing trace with hash 347787473, now seen corresponding path program 1 times [2022-07-13 18:19:03,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:03,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237791935] [2022-07-13 18:19:03,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:03,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:03,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,013 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-07-13 18:19:04,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:04,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237791935] [2022-07-13 18:19:04,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237791935] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:04,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:04,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:04,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903432657] [2022-07-13 18:19:04,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:04,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:04,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:04,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:04,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:04,014 INFO L87 Difference]: Start difference. First operand 272 states and 361 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-13 18:19:04,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:04,034 INFO L93 Difference]: Finished difference Result 423 states and 587 transitions. [2022-07-13 18:19:04,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:04,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 206 [2022-07-13 18:19:04,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:04,035 INFO L225 Difference]: With dead ends: 423 [2022-07-13 18:19:04,035 INFO L226 Difference]: Without dead ends: 278 [2022-07-13 18:19:04,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:04,036 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 6 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:04,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 773 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:04,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-07-13 18:19:04,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 276. [2022-07-13 18:19:04,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 226 states have (on average 1.2743362831858407) internal successors, (288), 229 states have internal predecessors, (288), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-13 18:19:04,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 364 transitions. [2022-07-13 18:19:04,043 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 364 transitions. Word has length 206 [2022-07-13 18:19:04,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:04,043 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 364 transitions. [2022-07-13 18:19:04,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-13 18:19:04,043 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 364 transitions. [2022-07-13 18:19:04,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-13 18:19:04,044 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:04,045 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 18:19:04,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 18:19:04,045 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:04,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:04,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1054391106, now seen corresponding path program 1 times [2022-07-13 18:19:04,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:04,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735512927] [2022-07-13 18:19:04,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:04,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,122 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-07-13 18:19:04,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:04,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735512927] [2022-07-13 18:19:04,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735512927] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:04,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064467189] [2022-07-13 18:19:04,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:04,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:04,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:04,124 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) [2022-07-13 18:19:04,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 18:19:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 18:19:04,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:04,301 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-07-13 18:19:04,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:19:04,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064467189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:04,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:19:04,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-13 18:19:04,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117041360] [2022-07-13 18:19:04,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:04,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:04,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:04,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:04,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:04,302 INFO L87 Difference]: Start difference. First operand 276 states and 364 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-13 18:19:04,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:04,323 INFO L93 Difference]: Finished difference Result 432 states and 594 transitions. [2022-07-13 18:19:04,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:04,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 215 [2022-07-13 18:19:04,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:04,325 INFO L225 Difference]: With dead ends: 432 [2022-07-13 18:19:04,325 INFO L226 Difference]: Without dead ends: 283 [2022-07-13 18:19:04,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:19:04,326 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 7 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:04,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 778 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:04,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-07-13 18:19:04,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 281. [2022-07-13 18:19:04,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 230 states have (on average 1.2695652173913043) internal successors, (292), 233 states have internal predecessors, (292), 38 states have call successors, (38), 12 states have call predecessors, (38), 12 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-13 18:19:04,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 368 transitions. [2022-07-13 18:19:04,332 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 368 transitions. Word has length 215 [2022-07-13 18:19:04,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:04,333 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 368 transitions. [2022-07-13 18:19:04,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-13 18:19:04,333 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 368 transitions. [2022-07-13 18:19:04,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-13 18:19:04,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:04,334 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 18:19:04,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:04,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:04,547 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:04,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:04,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1477420628, now seen corresponding path program 1 times [2022-07-13 18:19:04,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:04,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94957091] [2022-07-13 18:19:04,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:04,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:04,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:19:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,640 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2022-07-13 18:19:04,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:04,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94957091] [2022-07-13 18:19:04,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94957091] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:04,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348247977] [2022-07-13 18:19:04,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:04,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:04,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:04,643 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:04,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 18:19:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:04,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 18:19:04,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:04,792 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2022-07-13 18:19:04,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:19:04,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348247977] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:04,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:19:04,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-13 18:19:04,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169359137] [2022-07-13 18:19:04,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:04,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:04,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:04,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:04,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:04,794 INFO L87 Difference]: Start difference. First operand 281 states and 368 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-13 18:19:04,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:04,814 INFO L93 Difference]: Finished difference Result 434 states and 592 transitions. [2022-07-13 18:19:04,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:19:04,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 225 [2022-07-13 18:19:04,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:04,816 INFO L225 Difference]: With dead ends: 434 [2022-07-13 18:19:04,816 INFO L226 Difference]: Without dead ends: 280 [2022-07-13 18:19:04,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:19:04,817 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 7 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:04,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 764 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:04,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-07-13 18:19:04,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2022-07-13 18:19:04,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 230 states have (on average 1.2565217391304349) internal successors, (289), 232 states have internal predecessors, (289), 37 states have call successors, (37), 12 states have call predecessors, (37), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-13 18:19:04,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 363 transitions. [2022-07-13 18:19:04,840 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 363 transitions. Word has length 225 [2022-07-13 18:19:04,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:04,840 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 363 transitions. [2022-07-13 18:19:04,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-13 18:19:04,840 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 363 transitions. [2022-07-13 18:19:04,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-07-13 18:19:04,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:04,843 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 18:19:04,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:05,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:05,058 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:05,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:05,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1684487284, now seen corresponding path program 1 times [2022-07-13 18:19:05,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:05,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372523834] [2022-07-13 18:19:05,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:05,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:19:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-13 18:19:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,170 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2022-07-13 18:19:05,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:05,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372523834] [2022-07-13 18:19:05,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372523834] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:05,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:05,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:05,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544534025] [2022-07-13 18:19:05,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:05,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:05,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:05,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:05,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:05,173 INFO L87 Difference]: Start difference. First operand 280 states and 363 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-13 18:19:05,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:05,346 INFO L93 Difference]: Finished difference Result 475 states and 650 transitions. [2022-07-13 18:19:05,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:19:05,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 235 [2022-07-13 18:19:05,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:05,348 INFO L225 Difference]: With dead ends: 475 [2022-07-13 18:19:05,348 INFO L226 Difference]: Without dead ends: 322 [2022-07-13 18:19:05,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:05,349 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 183 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:05,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 624 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:19:05,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-07-13 18:19:05,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 279. [2022-07-13 18:19:05,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 230 states have (on average 1.2521739130434784) internal successors, (288), 231 states have internal predecessors, (288), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-07-13 18:19:05,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 360 transitions. [2022-07-13 18:19:05,358 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 360 transitions. Word has length 235 [2022-07-13 18:19:05,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:05,358 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 360 transitions. [2022-07-13 18:19:05,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-13 18:19:05,358 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 360 transitions. [2022-07-13 18:19:05,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-07-13 18:19:05,360 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:05,360 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 18:19:05,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 18:19:05,360 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:05,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:05,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1937286894, now seen corresponding path program 1 times [2022-07-13 18:19:05,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:05,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114958929] [2022-07-13 18:19:05,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:05,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:19:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-13 18:19:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,466 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2022-07-13 18:19:05,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:05,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114958929] [2022-07-13 18:19:05,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114958929] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:05,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:05,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:19:05,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635531297] [2022-07-13 18:19:05,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:05,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:19:05,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:05,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:19:05,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:05,468 INFO L87 Difference]: Start difference. First operand 279 states and 360 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 18:19:05,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:05,824 INFO L93 Difference]: Finished difference Result 655 states and 874 transitions. [2022-07-13 18:19:05,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 18:19:05,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 236 [2022-07-13 18:19:05,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:05,828 INFO L225 Difference]: With dead ends: 655 [2022-07-13 18:19:05,828 INFO L226 Difference]: Without dead ends: 503 [2022-07-13 18:19:05,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:19:05,829 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 419 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:05,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 786 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:19:05,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-07-13 18:19:05,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 440. [2022-07-13 18:19:05,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 361 states have (on average 1.299168975069252) internal successors, (469), 363 states have internal predecessors, (469), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-07-13 18:19:05,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 577 transitions. [2022-07-13 18:19:05,843 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 577 transitions. Word has length 236 [2022-07-13 18:19:05,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:05,843 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 577 transitions. [2022-07-13 18:19:05,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 18:19:05,843 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 577 transitions. [2022-07-13 18:19:05,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-07-13 18:19:05,845 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:05,845 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 18:19:05,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 18:19:05,845 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:05,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:05,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1634448199, now seen corresponding path program 1 times [2022-07-13 18:19:05,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:05,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225858296] [2022-07-13 18:19:05,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:05,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:19:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-13 18:19:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-07-13 18:19:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-07-13 18:19:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-07-13 18:19:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:05,928 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2022-07-13 18:19:05,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:05,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225858296] [2022-07-13 18:19:05,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225858296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:05,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:05,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:05,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359561434] [2022-07-13 18:19:05,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:05,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:05,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:05,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:05,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:05,930 INFO L87 Difference]: Start difference. First operand 440 states and 577 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-13 18:19:06,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:06,159 INFO L93 Difference]: Finished difference Result 929 states and 1271 transitions. [2022-07-13 18:19:06,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:06,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 265 [2022-07-13 18:19:06,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:06,163 INFO L225 Difference]: With dead ends: 929 [2022-07-13 18:19:06,163 INFO L226 Difference]: Without dead ends: 693 [2022-07-13 18:19:06,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:06,164 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 214 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:06,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 586 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:19:06,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2022-07-13 18:19:06,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 531. [2022-07-13 18:19:06,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 442 states have (on average 1.3076923076923077) internal successors, (578), 445 states have internal predecessors, (578), 59 states have call successors, (59), 29 states have call predecessors, (59), 29 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-13 18:19:06,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 696 transitions. [2022-07-13 18:19:06,185 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 696 transitions. Word has length 265 [2022-07-13 18:19:06,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:06,185 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 696 transitions. [2022-07-13 18:19:06,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-13 18:19:06,186 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 696 transitions. [2022-07-13 18:19:06,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-07-13 18:19:06,187 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:06,188 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 18:19:06,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 18:19:06,188 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:06,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:06,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1733084103, now seen corresponding path program 1 times [2022-07-13 18:19:06,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:06,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835267138] [2022-07-13 18:19:06,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:06,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:19:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-13 18:19:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-07-13 18:19:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-13 18:19:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-07-13 18:19:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,305 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2022-07-13 18:19:06,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:06,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835267138] [2022-07-13 18:19:06,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835267138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:06,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:06,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:06,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519417918] [2022-07-13 18:19:06,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:06,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:06,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:06,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:06,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:06,308 INFO L87 Difference]: Start difference. First operand 531 states and 696 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-13 18:19:06,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:06,577 INFO L93 Difference]: Finished difference Result 1121 states and 1524 transitions. [2022-07-13 18:19:06,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:06,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 266 [2022-07-13 18:19:06,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:06,581 INFO L225 Difference]: With dead ends: 1121 [2022-07-13 18:19:06,581 INFO L226 Difference]: Without dead ends: 829 [2022-07-13 18:19:06,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:06,582 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 217 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:06,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 620 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:19:06,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-07-13 18:19:06,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 651. [2022-07-13 18:19:06,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 550 states have (on average 1.3163636363636364) internal successors, (724), 555 states have internal predecessors, (724), 65 states have call successors, (65), 35 states have call predecessors, (65), 35 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-07-13 18:19:06,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 854 transitions. [2022-07-13 18:19:06,608 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 854 transitions. Word has length 266 [2022-07-13 18:19:06,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:06,609 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 854 transitions. [2022-07-13 18:19:06,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-13 18:19:06,609 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 854 transitions. [2022-07-13 18:19:06,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-07-13 18:19:06,611 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:06,611 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 18:19:06,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 18:19:06,612 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:06,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:06,612 INFO L85 PathProgramCache]: Analyzing trace with hash 2100471702, now seen corresponding path program 1 times [2022-07-13 18:19:06,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:06,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113113009] [2022-07-13 18:19:06,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:06,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-07-13 18:19:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-07-13 18:19:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,727 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 603 trivial. 0 not checked. [2022-07-13 18:19:06,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:06,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113113009] [2022-07-13 18:19:06,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113113009] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:06,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473333932] [2022-07-13 18:19:06,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:06,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:06,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:06,729 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:06,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 18:19:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 18:19:06,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:06,905 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2022-07-13 18:19:06,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:19:06,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473333932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:06,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:19:06,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-13 18:19:06,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82266360] [2022-07-13 18:19:06,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:06,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:06,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:06,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:06,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:19:06,908 INFO L87 Difference]: Start difference. First operand 651 states and 854 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 18:19:06,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:06,989 INFO L93 Difference]: Finished difference Result 1037 states and 1394 transitions. [2022-07-13 18:19:06,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:06,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 267 [2022-07-13 18:19:06,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:06,993 INFO L225 Difference]: With dead ends: 1037 [2022-07-13 18:19:06,993 INFO L226 Difference]: Without dead ends: 651 [2022-07-13 18:19:06,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:19:06,994 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 51 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:06,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 681 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:06,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-07-13 18:19:07,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2022-07-13 18:19:07,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 550 states have (on average 1.3054545454545454) internal successors, (718), 555 states have internal predecessors, (718), 65 states have call successors, (65), 35 states have call predecessors, (65), 35 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-07-13 18:19:07,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 848 transitions. [2022-07-13 18:19:07,021 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 848 transitions. Word has length 267 [2022-07-13 18:19:07,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:07,022 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 848 transitions. [2022-07-13 18:19:07,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 18:19:07,023 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 848 transitions. [2022-07-13 18:19:07,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-07-13 18:19:07,025 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:07,025 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:07,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:07,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-13 18:19:07,248 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:07,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:07,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1830281755, now seen corresponding path program 1 times [2022-07-13 18:19:07,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:07,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410680647] [2022-07-13 18:19:07,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:07,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-07-13 18:19:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,352 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2022-07-13 18:19:07,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:07,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410680647] [2022-07-13 18:19:07,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410680647] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:07,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553427161] [2022-07-13 18:19:07,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:07,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:07,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:07,360 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:07,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 18:19:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 18:19:07,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2022-07-13 18:19:07,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:19:07,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553427161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:07,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:19:07,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-13 18:19:07,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832225810] [2022-07-13 18:19:07,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:07,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:07,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:07,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:07,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:19:07,533 INFO L87 Difference]: Start difference. First operand 651 states and 848 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 18:19:07,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:07,591 INFO L93 Difference]: Finished difference Result 1037 states and 1380 transitions. [2022-07-13 18:19:07,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:07,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 268 [2022-07-13 18:19:07,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:07,593 INFO L225 Difference]: With dead ends: 1037 [2022-07-13 18:19:07,594 INFO L226 Difference]: Without dead ends: 663 [2022-07-13 18:19:07,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:19:07,595 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 15 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:07,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 704 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:07,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2022-07-13 18:19:07,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 663. [2022-07-13 18:19:07,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 560 states have (on average 1.3071428571428572) internal successors, (732), 565 states have internal predecessors, (732), 65 states have call successors, (65), 37 states have call predecessors, (65), 37 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-07-13 18:19:07,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 862 transitions. [2022-07-13 18:19:07,638 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 862 transitions. Word has length 268 [2022-07-13 18:19:07,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:07,638 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 862 transitions. [2022-07-13 18:19:07,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 18:19:07,638 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 862 transitions. [2022-07-13 18:19:07,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-07-13 18:19:07,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:07,640 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 18:19:07,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:07,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-13 18:19:07,852 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:07,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:07,852 INFO L85 PathProgramCache]: Analyzing trace with hash 632640880, now seen corresponding path program 1 times [2022-07-13 18:19:07,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:07,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545724372] [2022-07-13 18:19:07,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:07,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-13 18:19:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,972 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2022-07-13 18:19:07,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:07,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545724372] [2022-07-13 18:19:07,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545724372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:07,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:07,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:19:07,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254293728] [2022-07-13 18:19:07,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:07,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:19:07,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:07,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:19:07,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:19:07,982 INFO L87 Difference]: Start difference. First operand 663 states and 862 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-13 18:19:08,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:08,354 INFO L93 Difference]: Finished difference Result 931 states and 1277 transitions. [2022-07-13 18:19:08,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 18:19:08,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 269 [2022-07-13 18:19:08,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:08,358 INFO L225 Difference]: With dead ends: 931 [2022-07-13 18:19:08,358 INFO L226 Difference]: Without dead ends: 929 [2022-07-13 18:19:08,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:19:08,359 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 256 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:08,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 1659 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:19:08,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2022-07-13 18:19:08,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 669. [2022-07-13 18:19:08,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 564 states have (on average 1.3049645390070923) internal successors, (736), 570 states have internal predecessors, (736), 66 states have call successors, (66), 38 states have call predecessors, (66), 38 states have return successors, (66), 64 states have call predecessors, (66), 66 states have call successors, (66) [2022-07-13 18:19:08,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 868 transitions. [2022-07-13 18:19:08,398 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 868 transitions. Word has length 269 [2022-07-13 18:19:08,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:08,398 INFO L495 AbstractCegarLoop]: Abstraction has 669 states and 868 transitions. [2022-07-13 18:19:08,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-13 18:19:08,398 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 868 transitions. [2022-07-13 18:19:08,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-07-13 18:19:08,399 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:08,400 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 18:19:08,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 18:19:08,400 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:08,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:08,400 INFO L85 PathProgramCache]: Analyzing trace with hash -2002921446, now seen corresponding path program 1 times [2022-07-13 18:19:08,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:08,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568900957] [2022-07-13 18:19:08,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:08,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:08,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-13 18:19:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-07-13 18:19:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,546 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 142 proven. 27 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2022-07-13 18:19:08,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:08,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568900957] [2022-07-13 18:19:08,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568900957] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:08,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582436846] [2022-07-13 18:19:08,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:08,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:08,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:08,548 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:08,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 18:19:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 18:19:08,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:08,849 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 251 proven. 33 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2022-07-13 18:19:08,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:19:09,132 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 146 proven. 23 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2022-07-13 18:19:09,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582436846] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:19:09,133 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:19:09,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 19 [2022-07-13 18:19:09,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275819365] [2022-07-13 18:19:09,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:19:09,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 18:19:09,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:09,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 18:19:09,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-07-13 18:19:09,134 INFO L87 Difference]: Start difference. First operand 669 states and 868 transitions. Second operand has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 14 states have internal predecessors, (151), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2022-07-13 18:19:10,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:10,778 INFO L93 Difference]: Finished difference Result 1897 states and 2639 transitions. [2022-07-13 18:19:10,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-13 18:19:10,778 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 14 states have internal predecessors, (151), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) Word has length 277 [2022-07-13 18:19:10,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:10,784 INFO L225 Difference]: With dead ends: 1897 [2022-07-13 18:19:10,784 INFO L226 Difference]: Without dead ends: 1505 [2022-07-13 18:19:10,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 599 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=211, Invalid=1121, Unknown=0, NotChecked=0, Total=1332 [2022-07-13 18:19:10,785 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 715 mSDsluCounter, 2963 mSDsCounter, 0 mSdLazyCounter, 2464 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 3345 SdHoareTripleChecker+Invalid, 2661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 2464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:10,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 3345 Invalid, 2661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 2464 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 18:19:10,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2022-07-13 18:19:10,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 940. [2022-07-13 18:19:10,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 795 states have (on average 1.3018867924528301) internal successors, (1035), 802 states have internal predecessors, (1035), 90 states have call successors, (90), 51 states have call predecessors, (90), 54 states have return successors, (95), 90 states have call predecessors, (95), 90 states have call successors, (95) [2022-07-13 18:19:10,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1220 transitions. [2022-07-13 18:19:10,827 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1220 transitions. Word has length 277 [2022-07-13 18:19:10,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:10,827 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1220 transitions. [2022-07-13 18:19:10,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 14 states have internal predecessors, (151), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2022-07-13 18:19:10,828 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1220 transitions. [2022-07-13 18:19:10,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-07-13 18:19:10,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:10,829 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 18:19:10,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:11,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:11,032 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:11,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:11,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1041307429, now seen corresponding path program 1 times [2022-07-13 18:19:11,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:11,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434164442] [2022-07-13 18:19:11,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:11,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:11,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-13 18:19:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-07-13 18:19:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,112 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2022-07-13 18:19:11,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:11,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434164442] [2022-07-13 18:19:11,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434164442] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:11,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013656021] [2022-07-13 18:19:11,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:11,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:11,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:11,114 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:11,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 18:19:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 18:19:11,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:11,292 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2022-07-13 18:19:11,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:19:11,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013656021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:11,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:19:11,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-13 18:19:11,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851355092] [2022-07-13 18:19:11,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:11,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:11,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:11,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:11,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:11,294 INFO L87 Difference]: Start difference. First operand 940 states and 1220 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-13 18:19:11,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:11,351 INFO L93 Difference]: Finished difference Result 1743 states and 2304 transitions. [2022-07-13 18:19:11,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:11,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 277 [2022-07-13 18:19:11,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:11,355 INFO L225 Difference]: With dead ends: 1743 [2022-07-13 18:19:11,355 INFO L226 Difference]: Without dead ends: 924 [2022-07-13 18:19:11,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:19:11,357 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 11 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:11,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 704 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:11,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2022-07-13 18:19:11,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 924. [2022-07-13 18:19:11,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 784 states have (on average 1.2895408163265305) internal successors, (1011), 791 states have internal predecessors, (1011), 86 states have call successors, (86), 51 states have call predecessors, (86), 53 states have return successors, (90), 85 states have call predecessors, (90), 86 states have call successors, (90) [2022-07-13 18:19:11,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1187 transitions. [2022-07-13 18:19:11,390 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1187 transitions. Word has length 277 [2022-07-13 18:19:11,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:11,391 INFO L495 AbstractCegarLoop]: Abstraction has 924 states and 1187 transitions. [2022-07-13 18:19:11,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-13 18:19:11,391 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1187 transitions. [2022-07-13 18:19:11,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-07-13 18:19:11,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:11,393 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 18:19:11,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:11,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-13 18:19:11,604 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:11,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:11,604 INFO L85 PathProgramCache]: Analyzing trace with hash -186615214, now seen corresponding path program 1 times [2022-07-13 18:19:11,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:11,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773975344] [2022-07-13 18:19:11,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:11,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 18:19:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 18:19:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-13 18:19:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-13 18:19:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-07-13 18:19:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-07-13 18:19:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-13 18:19:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-13 18:19:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-07-13 18:19:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,687 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 121 proven. 19 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-07-13 18:19:11,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:11,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773975344] [2022-07-13 18:19:11,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773975344] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:11,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924580251] [2022-07-13 18:19:11,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:11,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:11,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:11,689 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:11,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 18:19:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 18:19:11,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:11,850 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2022-07-13 18:19:11,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:19:11,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924580251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:11,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:19:11,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-13 18:19:11,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100910894] [2022-07-13 18:19:11,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:11,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:11,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:11,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:11,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:11,852 INFO L87 Difference]: Start difference. First operand 924 states and 1187 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 18:19:11,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:11,926 INFO L93 Difference]: Finished difference Result 1576 states and 2065 transitions. [2022-07-13 18:19:11,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:11,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 280 [2022-07-13 18:19:11,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:11,929 INFO L225 Difference]: With dead ends: 1576 [2022-07-13 18:19:11,929 INFO L226 Difference]: Without dead ends: 764 [2022-07-13 18:19:11,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:19:11,931 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 8 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:11,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 707 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:11,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-07-13 18:19:11,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 764. [2022-07-13 18:19:11,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 642 states have (on average 1.2850467289719627) internal successors, (825), 649 states have internal predecessors, (825), 77 states have call successors, (77), 44 states have call predecessors, (77), 44 states have return successors, (77), 74 states have call predecessors, (77), 77 states have call successors, (77) [2022-07-13 18:19:11,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 979 transitions. [2022-07-13 18:19:11,959 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 979 transitions. Word has length 280 [2022-07-13 18:19:11,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:11,959 INFO L495 AbstractCegarLoop]: Abstraction has 764 states and 979 transitions. [2022-07-13 18:19:11,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 18:19:11,959 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 979 transitions. [2022-07-13 18:19:11,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-07-13 18:19:11,961 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:11,961 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 18:19:11,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:12,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:12,175 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:12,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:12,176 INFO L85 PathProgramCache]: Analyzing trace with hash -2136317147, now seen corresponding path program 1 times [2022-07-13 18:19:12,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:12,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046863292] [2022-07-13 18:19:12,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:12,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-13 18:19:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-07-13 18:19:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-07-13 18:19:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-07-13 18:19:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,343 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-07-13 18:19:12,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:12,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046863292] [2022-07-13 18:19:12,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046863292] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:12,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858429129] [2022-07-13 18:19:12,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:12,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:12,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:12,345 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:12,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 18:19:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-13 18:19:12,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:12,654 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2022-07-13 18:19:12,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:19:12,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858429129] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:12,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:19:12,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2022-07-13 18:19:12,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775237646] [2022-07-13 18:19:12,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:12,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:19:12,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:12,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:19:12,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2022-07-13 18:19:12,656 INFO L87 Difference]: Start difference. First operand 764 states and 979 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-13 18:19:13,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:13,320 INFO L93 Difference]: Finished difference Result 2417 states and 3200 transitions. [2022-07-13 18:19:13,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 18:19:13,321 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 292 [2022-07-13 18:19:13,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:13,328 INFO L225 Difference]: With dead ends: 2417 [2022-07-13 18:19:13,328 INFO L226 Difference]: Without dead ends: 2018 [2022-07-13 18:19:13,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2022-07-13 18:19:13,330 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 1158 mSDsluCounter, 3029 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 3482 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:13,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 3482 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 18:19:13,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2022-07-13 18:19:13,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1261. [2022-07-13 18:19:13,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 1041 states have (on average 1.2795389048991355) internal successors, (1332), 1053 states have internal predecessors, (1332), 145 states have call successors, (145), 74 states have call predecessors, (145), 74 states have return successors, (145), 137 states have call predecessors, (145), 145 states have call successors, (145) [2022-07-13 18:19:13,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1622 transitions. [2022-07-13 18:19:13,385 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1622 transitions. Word has length 292 [2022-07-13 18:19:13,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:13,386 INFO L495 AbstractCegarLoop]: Abstraction has 1261 states and 1622 transitions. [2022-07-13 18:19:13,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-13 18:19:13,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1622 transitions. [2022-07-13 18:19:13,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-07-13 18:19:13,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:13,388 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:13,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:13,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-07-13 18:19:13,602 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:13,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:13,602 INFO L85 PathProgramCache]: Analyzing trace with hash -785059678, now seen corresponding path program 1 times [2022-07-13 18:19:13,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:13,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443451862] [2022-07-13 18:19:13,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:13,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:13,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:13,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-13 18:19:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-13 18:19:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-13 18:19:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-13 18:19:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,707 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2022-07-13 18:19:13,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:13,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443451862] [2022-07-13 18:19:13,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443451862] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:13,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:13,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:19:13,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525731564] [2022-07-13 18:19:13,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:13,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:19:13,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:13,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:19:13,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:19:13,709 INFO L87 Difference]: Start difference. First operand 1261 states and 1622 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-13 18:19:14,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:14,155 INFO L93 Difference]: Finished difference Result 3542 states and 4844 transitions. [2022-07-13 18:19:14,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 18:19:14,156 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 298 [2022-07-13 18:19:14,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:14,165 INFO L225 Difference]: With dead ends: 3542 [2022-07-13 18:19:14,165 INFO L226 Difference]: Without dead ends: 2631 [2022-07-13 18:19:14,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:19:14,167 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 468 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 2127 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:14,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 2127 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:19:14,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2631 states. [2022-07-13 18:19:14,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2631 to 1354. [2022-07-13 18:19:14,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1113 states have (on average 1.2911051212938005) internal successors, (1437), 1125 states have internal predecessors, (1437), 166 states have call successors, (166), 74 states have call predecessors, (166), 74 states have return successors, (166), 158 states have call predecessors, (166), 166 states have call successors, (166) [2022-07-13 18:19:14,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 1769 transitions. [2022-07-13 18:19:14,255 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 1769 transitions. Word has length 298 [2022-07-13 18:19:14,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:14,255 INFO L495 AbstractCegarLoop]: Abstraction has 1354 states and 1769 transitions. [2022-07-13 18:19:14,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-13 18:19:14,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 1769 transitions. [2022-07-13 18:19:14,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-07-13 18:19:14,257 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:14,257 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:14,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-13 18:19:14,258 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:14,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:14,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1679492638, now seen corresponding path program 1 times [2022-07-13 18:19:14,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:14,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627362066] [2022-07-13 18:19:14,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:14,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-13 18:19:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-13 18:19:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-13 18:19:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-13 18:19:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,420 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-07-13 18:19:14,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:14,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627362066] [2022-07-13 18:19:14,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627362066] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:14,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936911082] [2022-07-13 18:19:14,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:14,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:14,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:14,424 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:14,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 18:19:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-13 18:19:14,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:14,839 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2022-07-13 18:19:14,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:19:14,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936911082] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:14,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:19:14,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 12 [2022-07-13 18:19:14,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322531612] [2022-07-13 18:19:14,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:14,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:19:14,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:14,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:19:14,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-13 18:19:14,841 INFO L87 Difference]: Start difference. First operand 1354 states and 1769 transitions. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 9 states have internal predecessors, (119), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-13 18:19:15,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:15,928 INFO L93 Difference]: Finished difference Result 3938 states and 5327 transitions. [2022-07-13 18:19:15,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 18:19:15,929 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 9 states have internal predecessors, (119), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 298 [2022-07-13 18:19:15,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:15,938 INFO L225 Difference]: With dead ends: 3938 [2022-07-13 18:19:15,938 INFO L226 Difference]: Without dead ends: 2935 [2022-07-13 18:19:15,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 346 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2022-07-13 18:19:15,941 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 1306 mSDsluCounter, 3365 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 3911 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:15,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1320 Valid, 3911 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 18:19:15,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2022-07-13 18:19:16,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1549. [2022-07-13 18:19:16,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1549 states, 1271 states have (on average 1.2840283241542092) internal successors, (1632), 1285 states have internal predecessors, (1632), 193 states have call successors, (193), 84 states have call predecessors, (193), 84 states have return successors, (193), 183 states have call predecessors, (193), 193 states have call successors, (193) [2022-07-13 18:19:16,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 2018 transitions. [2022-07-13 18:19:16,060 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 2018 transitions. Word has length 298 [2022-07-13 18:19:16,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:16,062 INFO L495 AbstractCegarLoop]: Abstraction has 1549 states and 2018 transitions. [2022-07-13 18:19:16,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 9 states have internal predecessors, (119), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-13 18:19:16,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 2018 transitions. [2022-07-13 18:19:16,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-07-13 18:19:16,064 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:16,065 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:16,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:16,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-07-13 18:19:16,275 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:16,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:16,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1728419810, now seen corresponding path program 1 times [2022-07-13 18:19:16,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:16,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986246154] [2022-07-13 18:19:16,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:16,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:16,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:16,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-13 18:19:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-13 18:19:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-13 18:19:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-13 18:19:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,428 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-07-13 18:19:16,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:16,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986246154] [2022-07-13 18:19:16,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986246154] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:16,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715900123] [2022-07-13 18:19:16,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:16,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:16,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:16,430 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:16,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 18:19:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-13 18:19:16,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:16,802 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2022-07-13 18:19:16,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:19:16,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715900123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:16,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:19:16,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 12 [2022-07-13 18:19:16,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231616844] [2022-07-13 18:19:16,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:16,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:19:16,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:16,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:19:16,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-13 18:19:16,804 INFO L87 Difference]: Start difference. First operand 1549 states and 2018 transitions. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 9 states have internal predecessors, (117), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-13 18:19:17,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:17,864 INFO L93 Difference]: Finished difference Result 3757 states and 5047 transitions. [2022-07-13 18:19:17,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 18:19:17,864 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 9 states have internal predecessors, (117), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 298 [2022-07-13 18:19:17,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:17,871 INFO L225 Difference]: With dead ends: 3757 [2022-07-13 18:19:17,871 INFO L226 Difference]: Without dead ends: 2619 [2022-07-13 18:19:17,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 346 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2022-07-13 18:19:17,873 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 1286 mSDsluCounter, 3475 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 3992 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:17,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1301 Valid, 3992 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 18:19:17,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2022-07-13 18:19:17,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 1515. [2022-07-13 18:19:17,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1247 states have (on average 1.2766639935846031) internal successors, (1592), 1261 states have internal predecessors, (1592), 183 states have call successors, (183), 84 states have call predecessors, (183), 84 states have return successors, (183), 173 states have call predecessors, (183), 183 states have call successors, (183) [2022-07-13 18:19:17,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 1958 transitions. [2022-07-13 18:19:17,968 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 1958 transitions. Word has length 298 [2022-07-13 18:19:17,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:17,968 INFO L495 AbstractCegarLoop]: Abstraction has 1515 states and 1958 transitions. [2022-07-13 18:19:17,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 9 states have internal predecessors, (117), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-13 18:19:17,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 1958 transitions. [2022-07-13 18:19:17,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-07-13 18:19:17,969 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:17,970 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:17,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:18,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-07-13 18:19:18,188 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:18,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:18,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1661534500, now seen corresponding path program 1 times [2022-07-13 18:19:18,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:18,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499514817] [2022-07-13 18:19:18,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:18,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-13 18:19:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-13 18:19:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-13 18:19:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-13 18:19:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,296 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2022-07-13 18:19:18,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:18,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499514817] [2022-07-13 18:19:18,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499514817] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:18,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:18,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:19:18,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251733372] [2022-07-13 18:19:18,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:18,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:19:18,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:18,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:19:18,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:19:18,298 INFO L87 Difference]: Start difference. First operand 1515 states and 1958 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-13 18:19:18,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:18,787 INFO L93 Difference]: Finished difference Result 2714 states and 3542 transitions. [2022-07-13 18:19:18,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 18:19:18,788 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 298 [2022-07-13 18:19:18,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:18,793 INFO L225 Difference]: With dead ends: 2714 [2022-07-13 18:19:18,793 INFO L226 Difference]: Without dead ends: 1567 [2022-07-13 18:19:18,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:19:18,795 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 459 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:18,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 700 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:19:18,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2022-07-13 18:19:18,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1427. [2022-07-13 18:19:18,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1427 states, 1174 states have (on average 1.2776831345826236) internal successors, (1500), 1187 states have internal predecessors, (1500), 173 states have call successors, (173), 79 states have call predecessors, (173), 79 states have return successors, (173), 164 states have call predecessors, (173), 173 states have call successors, (173) [2022-07-13 18:19:18,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 1846 transitions. [2022-07-13 18:19:18,891 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 1846 transitions. Word has length 298 [2022-07-13 18:19:18,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:18,891 INFO L495 AbstractCegarLoop]: Abstraction has 1427 states and 1846 transitions. [2022-07-13 18:19:18,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-13 18:19:18,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 1846 transitions. [2022-07-13 18:19:18,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-07-13 18:19:18,893 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:18,893 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:18,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-13 18:19:18,893 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:18,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:18,894 INFO L85 PathProgramCache]: Analyzing trace with hash -19843425, now seen corresponding path program 1 times [2022-07-13 18:19:18,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:18,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106317887] [2022-07-13 18:19:18,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:18,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-13 18:19:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-13 18:19:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-13 18:19:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-07-13 18:19:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-07-13 18:19:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,996 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2022-07-13 18:19:18,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:18,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106317887] [2022-07-13 18:19:18,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106317887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:18,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:18,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:19:18,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656266560] [2022-07-13 18:19:18,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:18,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:19:18,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:18,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:19:18,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:18,997 INFO L87 Difference]: Start difference. First operand 1427 states and 1846 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-13 18:19:19,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:19,441 INFO L93 Difference]: Finished difference Result 2620 states and 3407 transitions. [2022-07-13 18:19:19,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 18:19:19,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 311 [2022-07-13 18:19:19,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:19,446 INFO L225 Difference]: With dead ends: 2620 [2022-07-13 18:19:19,447 INFO L226 Difference]: Without dead ends: 1561 [2022-07-13 18:19:19,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:19:19,448 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 495 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:19,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 973 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:19:19,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2022-07-13 18:19:19,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1286. [2022-07-13 18:19:19,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1064 states have (on average 1.256578947368421) internal successors, (1337), 1072 states have internal predecessors, (1337), 151 states have call successors, (151), 70 states have call predecessors, (151), 70 states have return successors, (151), 143 states have call predecessors, (151), 151 states have call successors, (151) [2022-07-13 18:19:19,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1639 transitions. [2022-07-13 18:19:19,547 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1639 transitions. Word has length 311 [2022-07-13 18:19:19,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:19,548 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 1639 transitions. [2022-07-13 18:19:19,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-13 18:19:19,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1639 transitions. [2022-07-13 18:19:19,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-07-13 18:19:19,550 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:19,550 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:19,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-13 18:19:19,550 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:19,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:19,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1173087113, now seen corresponding path program 1 times [2022-07-13 18:19:19,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:19,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373701130] [2022-07-13 18:19:19,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:19,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-13 18:19:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-13 18:19:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-13 18:19:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-13 18:19:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-07-13 18:19:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-07-13 18:19:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-13 18:19:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-13 18:19:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-07-13 18:19:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,709 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2022-07-13 18:19:19,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:19,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373701130] [2022-07-13 18:19:19,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373701130] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:19,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886571153] [2022-07-13 18:19:19,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:19,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:19,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:19,712 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:19,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 18:19:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-13 18:19:19,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:20,172 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 224 proven. 81 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2022-07-13 18:19:20,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:19:20,639 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 34 proven. 77 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2022-07-13 18:19:20,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886571153] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:19:20,639 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:19:20,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 27 [2022-07-13 18:19:20,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670005790] [2022-07-13 18:19:20,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:19:20,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-13 18:19:20,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:20,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-13 18:19:20,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-07-13 18:19:20,641 INFO L87 Difference]: Start difference. First operand 1286 states and 1639 transitions. Second operand has 27 states, 27 states have (on average 9.851851851851851) internal successors, (266), 23 states have internal predecessors, (266), 7 states have call successors, (51), 9 states have call predecessors, (51), 13 states have return successors, (51), 10 states have call predecessors, (51), 7 states have call successors, (51) [2022-07-13 18:19:33,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:33,648 INFO L93 Difference]: Finished difference Result 11082 states and 15364 transitions. [2022-07-13 18:19:33,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2022-07-13 18:19:33,649 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.851851851851851) internal successors, (266), 23 states have internal predecessors, (266), 7 states have call successors, (51), 9 states have call predecessors, (51), 13 states have return successors, (51), 10 states have call predecessors, (51), 7 states have call successors, (51) Word has length 352 [2022-07-13 18:19:33,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:33,679 INFO L225 Difference]: With dead ends: 11082 [2022-07-13 18:19:33,680 INFO L226 Difference]: Without dead ends: 10101 [2022-07-13 18:19:33,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 991 GetRequests, 756 SyntacticMatches, 1 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20978 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=6177, Invalid=49283, Unknown=0, NotChecked=0, Total=55460 [2022-07-13 18:19:33,695 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 8093 mSDsluCounter, 9885 mSDsCounter, 0 mSdLazyCounter, 13296 mSolverCounterSat, 4660 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8093 SdHoareTripleChecker+Valid, 10675 SdHoareTripleChecker+Invalid, 17956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4660 IncrementalHoareTripleChecker+Valid, 13296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:33,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8093 Valid, 10675 Invalid, 17956 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4660 Valid, 13296 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-07-13 18:19:33,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10101 states. [2022-07-13 18:19:34,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10101 to 4744. [2022-07-13 18:19:34,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4744 states, 3760 states have (on average 1.2702127659574467) internal successors, (4776), 3802 states have internal predecessors, (4776), 693 states have call successors, (693), 272 states have call predecessors, (693), 290 states have return successors, (729), 669 states have call predecessors, (729), 693 states have call successors, (729) [2022-07-13 18:19:34,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4744 states to 4744 states and 6198 transitions. [2022-07-13 18:19:34,182 INFO L78 Accepts]: Start accepts. Automaton has 4744 states and 6198 transitions. Word has length 352 [2022-07-13 18:19:34,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:34,182 INFO L495 AbstractCegarLoop]: Abstraction has 4744 states and 6198 transitions. [2022-07-13 18:19:34,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.851851851851851) internal successors, (266), 23 states have internal predecessors, (266), 7 states have call successors, (51), 9 states have call predecessors, (51), 13 states have return successors, (51), 10 states have call predecessors, (51), 7 states have call successors, (51) [2022-07-13 18:19:34,183 INFO L276 IsEmpty]: Start isEmpty. Operand 4744 states and 6198 transitions. [2022-07-13 18:19:34,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-07-13 18:19:34,190 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:34,191 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:34,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:34,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-07-13 18:19:34,410 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:34,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:34,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1524668310, now seen corresponding path program 1 times [2022-07-13 18:19:34,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:34,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099302900] [2022-07-13 18:19:34,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:34,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-13 18:19:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-13 18:19:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-13 18:19:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-13 18:19:34,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-07-13 18:19:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-07-13 18:19:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-13 18:19:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-13 18:19:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-07-13 18:19:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,497 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 44 proven. 5 refuted. 0 times theorem prover too weak. 832 trivial. 0 not checked. [2022-07-13 18:19:34,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:34,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099302900] [2022-07-13 18:19:34,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099302900] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:34,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166282861] [2022-07-13 18:19:34,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:34,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:34,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:34,508 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:34,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-13 18:19:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:34,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-13 18:19:34,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:34,772 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2022-07-13 18:19:34,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:19:34,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166282861] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:34,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:19:34,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2022-07-13 18:19:34,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988678269] [2022-07-13 18:19:34,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:34,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 18:19:34,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:34,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 18:19:34,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:19:34,774 INFO L87 Difference]: Start difference. First operand 4744 states and 6198 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-13 18:19:35,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:35,689 INFO L93 Difference]: Finished difference Result 10795 states and 14311 transitions. [2022-07-13 18:19:35,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:19:35,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 352 [2022-07-13 18:19:35,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:35,705 INFO L225 Difference]: With dead ends: 10795 [2022-07-13 18:19:35,705 INFO L226 Difference]: Without dead ends: 6558 [2022-07-13 18:19:35,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-07-13 18:19:35,711 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 499 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:35,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 2317 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:19:35,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6558 states. [2022-07-13 18:19:36,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6558 to 3583. [2022-07-13 18:19:36,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 2884 states have (on average 1.2503467406380029) internal successors, (3606), 2926 states have internal predecessors, (3606), 474 states have call successors, (474), 206 states have call predecessors, (474), 224 states have return successors, (498), 450 states have call predecessors, (498), 474 states have call successors, (498) [2022-07-13 18:19:36,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 4578 transitions. [2022-07-13 18:19:36,054 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 4578 transitions. Word has length 352 [2022-07-13 18:19:36,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:36,055 INFO L495 AbstractCegarLoop]: Abstraction has 3583 states and 4578 transitions. [2022-07-13 18:19:36,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-13 18:19:36,055 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 4578 transitions. [2022-07-13 18:19:36,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-07-13 18:19:36,061 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:36,061 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:36,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-07-13 18:19:36,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:36,279 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:36,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:36,280 INFO L85 PathProgramCache]: Analyzing trace with hash 759545706, now seen corresponding path program 1 times [2022-07-13 18:19:36,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:36,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080078679] [2022-07-13 18:19:36,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:36,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-13 18:19:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-13 18:19:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-13 18:19:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-13 18:19:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-07-13 18:19:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-07-13 18:19:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-13 18:19:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-13 18:19:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-07-13 18:19:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:36,397 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2022-07-13 18:19:36,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:36,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080078679] [2022-07-13 18:19:36,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080078679] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:36,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:36,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:19:36,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908272068] [2022-07-13 18:19:36,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:36,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:19:36,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:36,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:19:36,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:19:36,399 INFO L87 Difference]: Start difference. First operand 3583 states and 4578 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 4 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-13 18:19:36,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:36,965 INFO L93 Difference]: Finished difference Result 6761 states and 8677 transitions. [2022-07-13 18:19:36,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 18:19:36,965 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 4 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 352 [2022-07-13 18:19:36,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:36,973 INFO L225 Difference]: With dead ends: 6761 [2022-07-13 18:19:36,974 INFO L226 Difference]: Without dead ends: 3583 [2022-07-13 18:19:36,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:19:36,978 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 286 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:36,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 507 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:19:36,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2022-07-13 18:19:37,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 3583. [2022-07-13 18:19:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 2884 states have (on average 1.2489597780859916) internal successors, (3602), 2926 states have internal predecessors, (3602), 474 states have call successors, (474), 206 states have call predecessors, (474), 224 states have return successors, (498), 450 states have call predecessors, (498), 474 states have call successors, (498) [2022-07-13 18:19:37,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 4574 transitions. [2022-07-13 18:19:37,313 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 4574 transitions. Word has length 352 [2022-07-13 18:19:37,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:37,313 INFO L495 AbstractCegarLoop]: Abstraction has 3583 states and 4574 transitions. [2022-07-13 18:19:37,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 4 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-13 18:19:37,314 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 4574 transitions. [2022-07-13 18:19:37,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-07-13 18:19:37,321 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:37,322 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:37,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-13 18:19:37,322 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:37,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:37,322 INFO L85 PathProgramCache]: Analyzing trace with hash -641728501, now seen corresponding path program 1 times [2022-07-13 18:19:37,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:37,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659699090] [2022-07-13 18:19:37,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:37,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:19:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-13 18:19:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-13 18:19:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-13 18:19:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-13 18:19:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-13 18:19:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-07-13 18:19:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-07-13 18:19:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-13 18:19:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-13 18:19:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-07-13 18:19:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2022-07-13 18:19:37,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:37,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659699090] [2022-07-13 18:19:37,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659699090] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:37,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:37,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:37,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691599124] [2022-07-13 18:19:37,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:37,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:37,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:37,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:37,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:37,424 INFO L87 Difference]: Start difference. First operand 3583 states and 4574 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 18:19:38,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:38,148 INFO L93 Difference]: Finished difference Result 9818 states and 12591 transitions. [2022-07-13 18:19:38,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:38,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 352 [2022-07-13 18:19:38,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:38,163 INFO L225 Difference]: With dead ends: 9818 [2022-07-13 18:19:38,163 INFO L226 Difference]: Without dead ends: 6682 [2022-07-13 18:19:38,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:38,169 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 212 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:38,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 636 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:19:38,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6682 states. [2022-07-13 18:19:38,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6682 to 3798. [2022-07-13 18:19:38,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3798 states, 3099 states have (on average 1.2436269764440142) internal successors, (3854), 3141 states have internal predecessors, (3854), 474 states have call successors, (474), 206 states have call predecessors, (474), 224 states have return successors, (498), 450 states have call predecessors, (498), 474 states have call successors, (498) [2022-07-13 18:19:38,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3798 states to 3798 states and 4826 transitions. [2022-07-13 18:19:38,563 INFO L78 Accepts]: Start accepts. Automaton has 3798 states and 4826 transitions. Word has length 352 [2022-07-13 18:19:38,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:38,563 INFO L495 AbstractCegarLoop]: Abstraction has 3798 states and 4826 transitions. [2022-07-13 18:19:38,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 18:19:38,564 INFO L276 IsEmpty]: Start isEmpty. Operand 3798 states and 4826 transitions. [2022-07-13 18:19:38,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-07-13 18:19:38,571 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:38,571 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:38,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-13 18:19:38,572 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:38,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:38,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1931236109, now seen corresponding path program 1 times [2022-07-13 18:19:38,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:38,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681323984] [2022-07-13 18:19:38,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:38,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:38,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:38,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:19:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-13 18:19:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:38,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-13 18:19:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-13 18:19:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-13 18:19:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-13 18:19:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-07-13 18:19:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-07-13 18:19:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-13 18:19:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-13 18:19:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-07-13 18:19:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,675 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 853 trivial. 0 not checked. [2022-07-13 18:19:38,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:38,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681323984] [2022-07-13 18:19:38,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681323984] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:38,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:38,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:38,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450104315] [2022-07-13 18:19:38,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:38,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:38,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:38,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:38,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:38,677 INFO L87 Difference]: Start difference. First operand 3798 states and 4826 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 18:19:39,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:39,250 INFO L93 Difference]: Finished difference Result 7142 states and 9114 transitions. [2022-07-13 18:19:39,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:19:39,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 352 [2022-07-13 18:19:39,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:39,259 INFO L225 Difference]: With dead ends: 7142 [2022-07-13 18:19:39,259 INFO L226 Difference]: Without dead ends: 3676 [2022-07-13 18:19:39,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:39,271 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 54 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:39,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 539 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:19:39,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2022-07-13 18:19:39,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3676. [2022-07-13 18:19:39,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 2977 states have (on average 1.2395028552233793) internal successors, (3690), 3019 states have internal predecessors, (3690), 474 states have call successors, (474), 206 states have call predecessors, (474), 224 states have return successors, (498), 450 states have call predecessors, (498), 474 states have call successors, (498) [2022-07-13 18:19:39,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 4662 transitions. [2022-07-13 18:19:39,617 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 4662 transitions. Word has length 352 [2022-07-13 18:19:39,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:39,618 INFO L495 AbstractCegarLoop]: Abstraction has 3676 states and 4662 transitions. [2022-07-13 18:19:39,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 18:19:39,618 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 4662 transitions. [2022-07-13 18:19:39,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-07-13 18:19:39,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:39,624 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:39,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-13 18:19:39,624 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:39,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:39,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1199213648, now seen corresponding path program 1 times [2022-07-13 18:19:39,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:39,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595918816] [2022-07-13 18:19:39,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:39,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-13 18:19:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-13 18:19:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-13 18:19:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-07-13 18:19:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-13 18:19:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-07-13 18:19:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-07-13 18:19:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-07-13 18:19:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-07-13 18:19:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-07-13 18:19:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-07-13 18:19:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-07-13 18:19:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-07-13 18:19:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,742 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 44 proven. 5 refuted. 0 times theorem prover too weak. 832 trivial. 0 not checked. [2022-07-13 18:19:39,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:39,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595918816] [2022-07-13 18:19:39,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595918816] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:39,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700955880] [2022-07-13 18:19:39,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:39,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:39,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:39,744 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:39,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-13 18:19:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 18:19:39,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-07-13 18:19:39,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:19:39,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700955880] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:39,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:19:39,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-13 18:19:39,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612382573] [2022-07-13 18:19:39,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:39,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:39,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:39,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:39,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:39,983 INFO L87 Difference]: Start difference. First operand 3676 states and 4662 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-13 18:19:40,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:40,347 INFO L93 Difference]: Finished difference Result 7483 states and 9489 transitions. [2022-07-13 18:19:40,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:40,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 353 [2022-07-13 18:19:40,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:40,357 INFO L225 Difference]: With dead ends: 7483 [2022-07-13 18:19:40,357 INFO L226 Difference]: Without dead ends: 3628 [2022-07-13 18:19:40,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:19:40,364 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 40 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:40,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 660 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:40,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3628 states. [2022-07-13 18:19:40,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3628 to 3628. [2022-07-13 18:19:40,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 2947 states have (on average 1.2073294876145233) internal successors, (3558), 2977 states have internal predecessors, (3558), 474 states have call successors, (474), 206 states have call predecessors, (474), 206 states have return successors, (474), 444 states have call predecessors, (474), 474 states have call successors, (474) [2022-07-13 18:19:40,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 4506 transitions. [2022-07-13 18:19:40,717 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 4506 transitions. Word has length 353 [2022-07-13 18:19:40,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:40,718 INFO L495 AbstractCegarLoop]: Abstraction has 3628 states and 4506 transitions. [2022-07-13 18:19:40,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-13 18:19:40,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 4506 transitions. [2022-07-13 18:19:40,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-07-13 18:19:40,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:40,723 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:40,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:40,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:40,924 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:40,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:40,925 INFO L85 PathProgramCache]: Analyzing trace with hash -2038601771, now seen corresponding path program 1 times [2022-07-13 18:19:40,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:40,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107191848] [2022-07-13 18:19:40,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:40,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:19:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-13 18:19:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-07-13 18:19:41,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-13 18:19:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-07-13 18:19:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-07-13 18:19:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-07-13 18:19:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-07-13 18:19:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-07-13 18:19:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-07-13 18:19:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-07-13 18:19:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-07-13 18:19:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,152 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2022-07-13 18:19:41,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:41,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107191848] [2022-07-13 18:19:41,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107191848] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:41,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906125477] [2022-07-13 18:19:41,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:41,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:41,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:41,154 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:41,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-13 18:19:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 1284 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-13 18:19:41,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:41,620 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 190 proven. 105 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2022-07-13 18:19:41,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:19:42,049 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 33 proven. 72 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2022-07-13 18:19:42,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906125477] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:19:42,050 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:19:42,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 30 [2022-07-13 18:19:42,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942936598] [2022-07-13 18:19:42,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:19:42,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-13 18:19:42,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:42,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-13 18:19:42,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2022-07-13 18:19:42,054 INFO L87 Difference]: Start difference. First operand 3628 states and 4506 transitions. Second operand has 30 states, 30 states have (on average 9.033333333333333) internal successors, (271), 26 states have internal predecessors, (271), 8 states have call successors, (54), 9 states have call predecessors, (54), 13 states have return successors, (54), 11 states have call predecessors, (54), 8 states have call successors, (54) [2022-07-13 18:20:12,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:20:12,723 INFO L93 Difference]: Finished difference Result 19931 states and 25731 transitions. [2022-07-13 18:20:12,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 473 states. [2022-07-13 18:20:12,724 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.033333333333333) internal successors, (271), 26 states have internal predecessors, (271), 8 states have call successors, (54), 9 states have call predecessors, (54), 13 states have return successors, (54), 11 states have call predecessors, (54), 8 states have call successors, (54) Word has length 353 [2022-07-13 18:20:12,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:20:12,758 INFO L225 Difference]: With dead ends: 19931 [2022-07-13 18:20:12,758 INFO L226 Difference]: Without dead ends: 16817 [2022-07-13 18:20:12,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1269 GetRequests, 770 SyntacticMatches, 1 SemanticMatches, 498 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107533 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=18960, Invalid=230540, Unknown=0, NotChecked=0, Total=249500 [2022-07-13 18:20:12,784 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 5816 mSDsluCounter, 21549 mSDsCounter, 0 mSdLazyCounter, 24848 mSolverCounterSat, 5934 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5816 SdHoareTripleChecker+Valid, 23107 SdHoareTripleChecker+Invalid, 30782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5934 IncrementalHoareTripleChecker+Valid, 24848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-07-13 18:20:12,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5816 Valid, 23107 Invalid, 30782 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5934 Valid, 24848 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2022-07-13 18:20:12,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16817 states. [2022-07-13 18:20:13,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16817 to 6107. [2022-07-13 18:20:13,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6107 states, 4976 states have (on average 1.2142282958199357) internal successors, (6042), 5026 states have internal predecessors, (6042), 786 states have call successors, (786), 344 states have call predecessors, (786), 344 states have return successors, (786), 736 states have call predecessors, (786), 786 states have call successors, (786) [2022-07-13 18:20:13,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6107 states to 6107 states and 7614 transitions. [2022-07-13 18:20:13,554 INFO L78 Accepts]: Start accepts. Automaton has 6107 states and 7614 transitions. Word has length 353 [2022-07-13 18:20:13,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:20:13,556 INFO L495 AbstractCegarLoop]: Abstraction has 6107 states and 7614 transitions. [2022-07-13 18:20:13,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.033333333333333) internal successors, (271), 26 states have internal predecessors, (271), 8 states have call successors, (54), 9 states have call predecessors, (54), 13 states have return successors, (54), 11 states have call predecessors, (54), 8 states have call successors, (54) [2022-07-13 18:20:13,556 INFO L276 IsEmpty]: Start isEmpty. Operand 6107 states and 7614 transitions. [2022-07-13 18:20:13,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2022-07-13 18:20:13,566 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:20:13,566 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:20:13,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-13 18:20:13,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:20:13,771 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:20:13,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:20:13,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1080894090, now seen corresponding path program 1 times [2022-07-13 18:20:13,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:20:13,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506628989] [2022-07-13 18:20:13,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:13,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:20:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:20:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:20:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:20:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:20:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:20:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:20:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:20:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:20:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:20:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:20:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:20:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:20:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:20:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:20:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:20:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-13 18:20:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-13 18:20:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-13 18:20:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-07-13 18:20:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-13 18:20:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-07-13 18:20:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-07-13 18:20:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-07-13 18:20:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-07-13 18:20:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-07-13 18:20:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-07-13 18:20:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-07-13 18:20:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-07-13 18:20:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-07-13 18:20:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:13,913 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2022-07-13 18:20:13,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:20:13,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506628989] [2022-07-13 18:20:13,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506628989] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:20:13,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121644819] [2022-07-13 18:20:13,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:13,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:20:13,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:20:13,920 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:20:13,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-13 18:20:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:14,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-13 18:20:14,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:20:14,491 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 328 proven. 118 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2022-07-13 18:20:14,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:20:15,027 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 51 proven. 204 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2022-07-13 18:20:15,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121644819] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:20:15,028 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:20:15,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 19] total 35 [2022-07-13 18:20:15,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750539669] [2022-07-13 18:20:15,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:20:15,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-13 18:20:15,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:20:15,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-13 18:20:15,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1089, Unknown=0, NotChecked=0, Total=1190 [2022-07-13 18:20:15,030 INFO L87 Difference]: Start difference. First operand 6107 states and 7614 transitions. Second operand has 35 states, 34 states have (on average 8.941176470588236) internal successors, (304), 30 states have internal predecessors, (304), 10 states have call successors, (61), 10 states have call predecessors, (61), 11 states have return successors, (62), 12 states have call predecessors, (62), 9 states have call successors, (62) [2022-07-13 18:20:30,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:20:30,725 INFO L93 Difference]: Finished difference Result 35135 states and 47972 transitions. [2022-07-13 18:20:30,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2022-07-13 18:20:30,726 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 8.941176470588236) internal successors, (304), 30 states have internal predecessors, (304), 10 states have call successors, (61), 10 states have call predecessors, (61), 11 states have return successors, (62), 12 states have call predecessors, (62), 9 states have call successors, (62) Word has length 363 [2022-07-13 18:20:30,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:20:30,809 INFO L225 Difference]: With dead ends: 35135 [2022-07-13 18:20:30,809 INFO L226 Difference]: Without dead ends: 29639 [2022-07-13 18:20:30,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 972 GetRequests, 774 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14380 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3139, Invalid=36661, Unknown=0, NotChecked=0, Total=39800 [2022-07-13 18:20:30,826 INFO L413 NwaCegarLoop]: 1083 mSDtfsCounter, 4185 mSDsluCounter, 18187 mSDsCounter, 0 mSdLazyCounter, 16896 mSolverCounterSat, 2151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4211 SdHoareTripleChecker+Valid, 19270 SdHoareTripleChecker+Invalid, 19047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2151 IncrementalHoareTripleChecker+Valid, 16896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-07-13 18:20:30,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4211 Valid, 19270 Invalid, 19047 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2151 Valid, 16896 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-07-13 18:20:30,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29639 states. [2022-07-13 18:20:31,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29639 to 6567. [2022-07-13 18:20:31,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6567 states, 5382 states have (on average 1.2105165366034931) internal successors, (6515), 5432 states have internal predecessors, (6515), 815 states have call successors, (815), 367 states have call predecessors, (815), 369 states have return successors, (819), 767 states have call predecessors, (819), 815 states have call successors, (819) [2022-07-13 18:20:31,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6567 states to 6567 states and 8149 transitions. [2022-07-13 18:20:31,870 INFO L78 Accepts]: Start accepts. Automaton has 6567 states and 8149 transitions. Word has length 363 [2022-07-13 18:20:31,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:20:31,870 INFO L495 AbstractCegarLoop]: Abstraction has 6567 states and 8149 transitions. [2022-07-13 18:20:31,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 8.941176470588236) internal successors, (304), 30 states have internal predecessors, (304), 10 states have call successors, (61), 10 states have call predecessors, (61), 11 states have return successors, (62), 12 states have call predecessors, (62), 9 states have call successors, (62) [2022-07-13 18:20:31,871 INFO L276 IsEmpty]: Start isEmpty. Operand 6567 states and 8149 transitions. [2022-07-13 18:20:31,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-07-13 18:20:31,881 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:20:31,881 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:20:31,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-13 18:20:32,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:20:32,095 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:20:32,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:20:32,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1599486290, now seen corresponding path program 1 times [2022-07-13 18:20:32,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:20:32,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307271972] [2022-07-13 18:20:32,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:32,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:20:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:20:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:20:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:20:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 18:20:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 18:20:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:20:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:20:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:20:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 18:20:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:20:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:20:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 18:20:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:20:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:20:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-13 18:20:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-13 18:20:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-07-13 18:20:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-07-13 18:20:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-07-13 18:20:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-13 18:20:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-07-13 18:20:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-07-13 18:20:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-07-13 18:20:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-07-13 18:20:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-07-13 18:20:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-07-13 18:20:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-07-13 18:20:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-07-13 18:20:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-07-13 18:20:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,170 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2022-07-13 18:20:32,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:20:32,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307271972] [2022-07-13 18:20:32,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307271972] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:20:32,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819152706] [2022-07-13 18:20:32,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:32,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:20:32,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:20:32,172 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:20:32,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-13 18:20:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:32,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 18:20:32,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:20:32,556 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2022-07-13 18:20:32,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:20:32,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819152706] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:20:32,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:20:32,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-07-13 18:20:32,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768379366] [2022-07-13 18:20:32,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:20:32,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:20:32,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:20:32,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:20:32,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:20:32,558 INFO L87 Difference]: Start difference. First operand 6567 states and 8149 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-13 18:20:33,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:20:33,653 INFO L93 Difference]: Finished difference Result 12291 states and 15330 transitions. [2022-07-13 18:20:33,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:20:33,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 366 [2022-07-13 18:20:33,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:20:33,675 INFO L225 Difference]: With dead ends: 12291 [2022-07-13 18:20:33,675 INFO L226 Difference]: Without dead ends: 6595 [2022-07-13 18:20:33,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:20:33,689 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 200 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:20:33,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 425 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:20:33,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6595 states. [2022-07-13 18:20:34,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6595 to 6567. [2022-07-13 18:20:34,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6567 states, 5382 states have (on average 1.2092159048680788) internal successors, (6508), 5432 states have internal predecessors, (6508), 815 states have call successors, (815), 367 states have call predecessors, (815), 369 states have return successors, (819), 767 states have call predecessors, (819), 815 states have call successors, (819) [2022-07-13 18:20:34,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6567 states to 6567 states and 8142 transitions. [2022-07-13 18:20:34,721 INFO L78 Accepts]: Start accepts. Automaton has 6567 states and 8142 transitions. Word has length 366 [2022-07-13 18:20:34,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:20:34,722 INFO L495 AbstractCegarLoop]: Abstraction has 6567 states and 8142 transitions. [2022-07-13 18:20:34,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-13 18:20:34,723 INFO L276 IsEmpty]: Start isEmpty. Operand 6567 states and 8142 transitions. [2022-07-13 18:20:34,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-07-13 18:20:34,735 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:20:34,735 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:20:34,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-07-13 18:20:34,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:20:34,940 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:20:34,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:20:34,940 INFO L85 PathProgramCache]: Analyzing trace with hash 772917262, now seen corresponding path program 1 times [2022-07-13 18:20:34,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:20:34,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133398898] [2022-07-13 18:20:34,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:34,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:20:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:34,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:20:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:34,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:20:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:34,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:20:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:34,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 18:20:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:34,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 18:20:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:34,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:20:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:34,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:20:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:34,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:20:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:34,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 18:20:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:34,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:20:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:34,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:34,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:20:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:34,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 18:20:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:34,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:20:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:34,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:34,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:20:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-13 18:20:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-13 18:20:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-07-13 18:20:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-07-13 18:20:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-07-13 18:20:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-13 18:20:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-07-13 18:20:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-07-13 18:20:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-07-13 18:20:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-07-13 18:20:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-07-13 18:20:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-07-13 18:20:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-07-13 18:20:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-07-13 18:20:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-07-13 18:20:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,026 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 799 trivial. 0 not checked. [2022-07-13 18:20:35,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:20:35,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133398898] [2022-07-13 18:20:35,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133398898] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:20:35,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529959751] [2022-07-13 18:20:35,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:35,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:20:35,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:20:35,029 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:20:35,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-13 18:20:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:35,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 1306 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 18:20:35,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:20:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2022-07-13 18:20:35,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:20:35,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529959751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:20:35,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:20:35,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-07-13 18:20:35,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748280914] [2022-07-13 18:20:35,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:20:35,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:20:35,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:20:35,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:20:35,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:20:35,487 INFO L87 Difference]: Start difference. First operand 6567 states and 8142 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-13 18:20:36,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:20:36,539 INFO L93 Difference]: Finished difference Result 12434 states and 15484 transitions. [2022-07-13 18:20:36,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:20:36,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 366 [2022-07-13 18:20:36,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:20:36,559 INFO L225 Difference]: With dead ends: 12434 [2022-07-13 18:20:36,560 INFO L226 Difference]: Without dead ends: 6630 [2022-07-13 18:20:36,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:20:36,573 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 301 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:20:36,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 424 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:20:36,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2022-07-13 18:20:37,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6609. [2022-07-13 18:20:37,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6609 states, 5424 states have (on average 1.205014749262537) internal successors, (6536), 5474 states have internal predecessors, (6536), 815 states have call successors, (815), 367 states have call predecessors, (815), 369 states have return successors, (819), 767 states have call predecessors, (819), 815 states have call successors, (819) [2022-07-13 18:20:37,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6609 states to 6609 states and 8170 transitions. [2022-07-13 18:20:37,593 INFO L78 Accepts]: Start accepts. Automaton has 6609 states and 8170 transitions. Word has length 366 [2022-07-13 18:20:37,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:20:37,594 INFO L495 AbstractCegarLoop]: Abstraction has 6609 states and 8170 transitions. [2022-07-13 18:20:37,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-13 18:20:37,594 INFO L276 IsEmpty]: Start isEmpty. Operand 6609 states and 8170 transitions. [2022-07-13 18:20:37,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2022-07-13 18:20:37,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:20:37,606 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:20:37,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-13 18:20:37,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:20:37,807 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:20:37,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:20:37,807 INFO L85 PathProgramCache]: Analyzing trace with hash 788969597, now seen corresponding path program 1 times [2022-07-13 18:20:37,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:20:37,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305426269] [2022-07-13 18:20:37,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:37,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:20:37,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:20:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:20:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:20:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 18:20:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 18:20:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:20:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:20:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:20:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 18:20:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:20:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:20:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 18:20:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:20:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:20:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-13 18:20:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-13 18:20:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-13 18:20:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-07-13 18:20:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-07-13 18:20:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-07-13 18:20:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-07-13 18:20:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-07-13 18:20:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-07-13 18:20:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-07-13 18:20:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-07-13 18:20:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-07-13 18:20:37,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-07-13 18:20:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-07-13 18:20:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-07-13 18:20:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:37,893 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2022-07-13 18:20:37,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:20:37,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305426269] [2022-07-13 18:20:37,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305426269] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:20:37,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573212573] [2022-07-13 18:20:37,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:37,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:20:37,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:20:37,900 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:20:37,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-13 18:20:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:38,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 18:20:38,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:20:38,121 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2022-07-13 18:20:38,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:20:38,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573212573] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:20:38,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:20:38,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-13 18:20:38,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82170307] [2022-07-13 18:20:38,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:20:38,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:20:38,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:20:38,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:20:38,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:20:38,124 INFO L87 Difference]: Start difference. First operand 6609 states and 8170 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-13 18:20:39,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:20:39,125 INFO L93 Difference]: Finished difference Result 12765 states and 15820 transitions. [2022-07-13 18:20:39,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:20:39,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 367 [2022-07-13 18:20:39,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:20:39,141 INFO L225 Difference]: With dead ends: 12765 [2022-07-13 18:20:39,142 INFO L226 Difference]: Without dead ends: 6157 [2022-07-13 18:20:39,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:20:39,153 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 28 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:20:39,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 667 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:20:39,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6157 states. [2022-07-13 18:20:40,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6157 to 6157. [2022-07-13 18:20:40,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6157 states, 5025 states have (on average 1.2081592039800995) internal successors, (6071), 5075 states have internal predecessors, (6071), 786 states have call successors, (786), 345 states have call predecessors, (786), 345 states have return successors, (786), 736 states have call predecessors, (786), 786 states have call successors, (786) [2022-07-13 18:20:40,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6157 states to 6157 states and 7643 transitions. [2022-07-13 18:20:40,150 INFO L78 Accepts]: Start accepts. Automaton has 6157 states and 7643 transitions. Word has length 367 [2022-07-13 18:20:40,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:20:40,150 INFO L495 AbstractCegarLoop]: Abstraction has 6157 states and 7643 transitions. [2022-07-13 18:20:40,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-13 18:20:40,151 INFO L276 IsEmpty]: Start isEmpty. Operand 6157 states and 7643 transitions. [2022-07-13 18:20:40,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-07-13 18:20:40,161 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:20:40,161 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:20:40,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-13 18:20:40,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-07-13 18:20:40,362 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:20:40,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:20:40,362 INFO L85 PathProgramCache]: Analyzing trace with hash -239829522, now seen corresponding path program 1 times [2022-07-13 18:20:40,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:20:40,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945954919] [2022-07-13 18:20:40,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:40,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:20:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:20:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:20:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:20:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:20:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:20:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:20:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:20:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:20:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:20:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:20:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:20:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:20:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:20:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:20:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:20:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-13 18:20:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-13 18:20:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-13 18:20:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-13 18:20:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-13 18:20:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-13 18:20:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-07-13 18:20:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-07-13 18:20:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-07-13 18:20:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-07-13 18:20:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-07-13 18:20:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-07-13 18:20:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-07-13 18:20:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-07-13 18:20:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-07-13 18:20:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2022-07-13 18:20:40,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:20:40,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945954919] [2022-07-13 18:20:40,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945954919] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:20:40,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930628524] [2022-07-13 18:20:40,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:40,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:20:40,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:20:40,551 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:20:40,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-13 18:20:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:40,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-13 18:20:40,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:20:41,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 457 proven. 205 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-07-13 18:20:41,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:20:42,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 113 proven. 189 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2022-07-13 18:20:42,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930628524] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:20:42,542 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:20:42,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 27, 21] total 50 [2022-07-13 18:20:42,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13664295] [2022-07-13 18:20:42,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:20:42,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-13 18:20:42,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:20:42,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-13 18:20:42,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2248, Unknown=0, NotChecked=0, Total=2450 [2022-07-13 18:20:42,544 INFO L87 Difference]: Start difference. First operand 6157 states and 7643 transitions. Second operand has 50 states, 50 states have (on average 7.64) internal successors, (382), 43 states have internal predecessors, (382), 16 states have call successors, (64), 13 states have call predecessors, (64), 18 states have return successors, (66), 19 states have call predecessors, (66), 16 states have call successors, (66) [2022-07-13 18:20:56,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:20:56,845 INFO L93 Difference]: Finished difference Result 21709 states and 28254 transitions. [2022-07-13 18:20:56,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-07-13 18:20:56,846 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 43 states have internal predecessors, (382), 16 states have call successors, (64), 13 states have call predecessors, (64), 18 states have return successors, (66), 19 states have call predecessors, (66), 16 states have call successors, (66) Word has length 374 [2022-07-13 18:20:56,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:20:56,883 INFO L225 Difference]: With dead ends: 21709 [2022-07-13 18:20:56,884 INFO L226 Difference]: Without dead ends: 16173 [2022-07-13 18:20:56,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 974 GetRequests, 787 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11311 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2787, Invalid=32745, Unknown=0, NotChecked=0, Total=35532 [2022-07-13 18:20:56,897 INFO L413 NwaCegarLoop]: 1073 mSDtfsCounter, 3166 mSDsluCounter, 23650 mSDsCounter, 0 mSdLazyCounter, 17764 mSolverCounterSat, 1305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3180 SdHoareTripleChecker+Valid, 24723 SdHoareTripleChecker+Invalid, 19069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1305 IncrementalHoareTripleChecker+Valid, 17764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-07-13 18:20:56,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3180 Valid, 24723 Invalid, 19069 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1305 Valid, 17764 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-07-13 18:20:56,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16173 states. [2022-07-13 18:20:57,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16173 to 6151. [2022-07-13 18:20:57,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6151 states, 5018 states have (on average 1.207453168593065) internal successors, (6059), 5068 states have internal predecessors, (6059), 786 states have call successors, (786), 346 states have call predecessors, (786), 346 states have return successors, (786), 736 states have call predecessors, (786), 786 states have call successors, (786) [2022-07-13 18:20:57,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6151 states to 6151 states and 7631 transitions. [2022-07-13 18:20:57,875 INFO L78 Accepts]: Start accepts. Automaton has 6151 states and 7631 transitions. Word has length 374 [2022-07-13 18:20:57,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:20:57,875 INFO L495 AbstractCegarLoop]: Abstraction has 6151 states and 7631 transitions. [2022-07-13 18:20:57,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 43 states have internal predecessors, (382), 16 states have call successors, (64), 13 states have call predecessors, (64), 18 states have return successors, (66), 19 states have call predecessors, (66), 16 states have call successors, (66) [2022-07-13 18:20:57,876 INFO L276 IsEmpty]: Start isEmpty. Operand 6151 states and 7631 transitions. [2022-07-13 18:20:57,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-07-13 18:20:57,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:20:57,884 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:20:57,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-13 18:20:58,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-07-13 18:20:58,086 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:20:58,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:20:58,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1998080803, now seen corresponding path program 1 times [2022-07-13 18:20:58,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:20:58,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495554411] [2022-07-13 18:20:58,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:58,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:20:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:20:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:20:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:20:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:20:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:20:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:20:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:20:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:20:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:20:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:20:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:20:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:20:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:20:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:20:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:20:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-13 18:20:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-13 18:20:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-13 18:20:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-13 18:20:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-13 18:20:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-07-13 18:20:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-07-13 18:20:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-07-13 18:20:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-07-13 18:20:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-07-13 18:20:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-07-13 18:20:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-07-13 18:20:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-07-13 18:20:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-07-13 18:20:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-07-13 18:20:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-07-13 18:20:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:58,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1068 trivial. 0 not checked. [2022-07-13 18:20:58,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:20:58,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495554411] [2022-07-13 18:20:58,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495554411] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:20:58,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:20:58,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:20:58,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866930161] [2022-07-13 18:20:58,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:20:58,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:20:58,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:20:58,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:20:58,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:20:58,208 INFO L87 Difference]: Start difference. First operand 6151 states and 7631 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 18:20:58,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:20:58,793 INFO L93 Difference]: Finished difference Result 8652 states and 10731 transitions. [2022-07-13 18:20:58,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:20:58,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 385 [2022-07-13 18:20:58,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:20:58,801 INFO L225 Difference]: With dead ends: 8652 [2022-07-13 18:20:58,801 INFO L226 Difference]: Without dead ends: 3019 [2022-07-13 18:20:58,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:20:58,809 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 51 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:20:58,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 530 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:20:58,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3019 states. [2022-07-13 18:20:59,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3019 to 3019. [2022-07-13 18:20:59,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3019 states, 2485 states have (on average 1.1891348088531186) internal successors, (2955), 2509 states have internal predecessors, (2955), 362 states have call successors, (362), 171 states have call predecessors, (362), 171 states have return successors, (362), 338 states have call predecessors, (362), 362 states have call successors, (362) [2022-07-13 18:20:59,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 3679 transitions. [2022-07-13 18:20:59,282 INFO L78 Accepts]: Start accepts. Automaton has 3019 states and 3679 transitions. Word has length 385 [2022-07-13 18:20:59,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:20:59,282 INFO L495 AbstractCegarLoop]: Abstraction has 3019 states and 3679 transitions. [2022-07-13 18:20:59,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 18:20:59,282 INFO L276 IsEmpty]: Start isEmpty. Operand 3019 states and 3679 transitions. [2022-07-13 18:20:59,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-07-13 18:20:59,286 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:20:59,287 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:20:59,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-13 18:20:59,287 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:20:59,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:20:59,287 INFO L85 PathProgramCache]: Analyzing trace with hash -772342869, now seen corresponding path program 1 times [2022-07-13 18:20:59,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:20:59,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152358955] [2022-07-13 18:20:59,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:59,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:20:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:20:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:20:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:20:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:20:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:20:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:20:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:20:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:20:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:20:59,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:20:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:20:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:20:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:20:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:20:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:20:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:20:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-13 18:20:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-13 18:20:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-13 18:20:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-13 18:20:59,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-07-13 18:20:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-07-13 18:20:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-07-13 18:20:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-07-13 18:20:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-07-13 18:20:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-07-13 18:20:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-07-13 18:20:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-07-13 18:20:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-07-13 18:20:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-07-13 18:20:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-07-13 18:20:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 52 proven. 52 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2022-07-13 18:20:59,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:20:59,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152358955] [2022-07-13 18:20:59,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152358955] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:20:59,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610690734] [2022-07-13 18:20:59,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:59,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:20:59,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:20:59,551 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:20:59,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-13 18:20:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:59,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 1360 conjuncts, 70 conjunts are in the unsatisfiable core [2022-07-13 18:20:59,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:21:00,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 550 proven. 249 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-07-13 18:21:00,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:21:01,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 158 proven. 154 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2022-07-13 18:21:01,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610690734] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:21:01,853 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:21:01,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 27, 21] total 56 [2022-07-13 18:21:01,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430939666] [2022-07-13 18:21:01,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:21:01,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-07-13 18:21:01,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:01,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-07-13 18:21:01,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2859, Unknown=0, NotChecked=0, Total=3080 [2022-07-13 18:21:01,855 INFO L87 Difference]: Start difference. First operand 3019 states and 3679 transitions. Second operand has 56 states, 56 states have (on average 7.696428571428571) internal successors, (431), 47 states have internal predecessors, (431), 16 states have call successors, (69), 11 states have call predecessors, (69), 24 states have return successors, (74), 24 states have call predecessors, (74), 16 states have call successors, (74) [2022-07-13 18:21:17,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:17,970 INFO L93 Difference]: Finished difference Result 20365 states and 26702 transitions. [2022-07-13 18:21:17,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-07-13 18:21:17,970 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 7.696428571428571) internal successors, (431), 47 states have internal predecessors, (431), 16 states have call successors, (69), 11 states have call predecessors, (69), 24 states have return successors, (74), 24 states have call predecessors, (74), 16 states have call successors, (74) Word has length 385 [2022-07-13 18:21:17,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:18,003 INFO L225 Difference]: With dead ends: 20365 [2022-07-13 18:21:18,004 INFO L226 Difference]: Without dead ends: 17813 [2022-07-13 18:21:18,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 832 SyntacticMatches, 3 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13429 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=2847, Invalid=38973, Unknown=0, NotChecked=0, Total=41820 [2022-07-13 18:21:18,013 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 4901 mSDsluCounter, 14530 mSDsCounter, 0 mSdLazyCounter, 12911 mSolverCounterSat, 2121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4928 SdHoareTripleChecker+Valid, 15172 SdHoareTripleChecker+Invalid, 15513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2121 IncrementalHoareTripleChecker+Valid, 12911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 481 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:18,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4928 Valid, 15172 Invalid, 15513 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2121 Valid, 12911 Invalid, 0 Unknown, 481 Unchecked, 6.9s Time] [2022-07-13 18:21:18,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17813 states. [2022-07-13 18:21:18,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17813 to 5525. [2022-07-13 18:21:18,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5525 states, 4437 states have (on average 1.200135226504395) internal successors, (5325), 4487 states have internal predecessors, (5325), 763 states have call successors, (763), 324 states have call predecessors, (763), 324 states have return successors, (763), 713 states have call predecessors, (763), 763 states have call successors, (763) [2022-07-13 18:21:18,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5525 states to 5525 states and 6851 transitions. [2022-07-13 18:21:18,946 INFO L78 Accepts]: Start accepts. Automaton has 5525 states and 6851 transitions. Word has length 385 [2022-07-13 18:21:18,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:18,946 INFO L495 AbstractCegarLoop]: Abstraction has 5525 states and 6851 transitions. [2022-07-13 18:21:18,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 7.696428571428571) internal successors, (431), 47 states have internal predecessors, (431), 16 states have call successors, (69), 11 states have call predecessors, (69), 24 states have return successors, (74), 24 states have call predecessors, (74), 16 states have call successors, (74) [2022-07-13 18:21:18,946 INFO L276 IsEmpty]: Start isEmpty. Operand 5525 states and 6851 transitions. [2022-07-13 18:21:18,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2022-07-13 18:21:18,954 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:18,954 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 10, 10, 10, 9, 9, 8, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:21:18,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-07-13 18:21:19,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-07-13 18:21:19,155 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:19,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:19,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1009801305, now seen corresponding path program 1 times [2022-07-13 18:21:19,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:19,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883481293] [2022-07-13 18:21:19,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:19,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:21:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:21:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:21:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:21:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:21:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:21:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:21:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:21:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:21:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:21:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:21:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:21:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:21:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:21:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:21:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:21:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:21:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:21:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-13 18:21:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-13 18:21:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-13 18:21:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-13 18:21:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-07-13 18:21:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-07-13 18:21:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-07-13 18:21:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-07-13 18:21:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-07-13 18:21:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-07-13 18:21:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-13 18:21:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-07-13 18:21:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-07-13 18:21:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-07-13 18:21:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-07-13 18:21:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-07-13 18:21:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-07-13 18:21:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-07-13 18:21:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2022-07-13 18:21:19,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:19,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883481293] [2022-07-13 18:21:19,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883481293] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:21:19,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575460518] [2022-07-13 18:21:19,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:19,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:21:19,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:21:19,375 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:21:19,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-13 18:21:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:19,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 18:21:19,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:21:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 512 proven. 23 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2022-07-13 18:21:20,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:21:20,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2022-07-13 18:21:20,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575460518] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:21:20,372 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:21:20,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 9] total 25 [2022-07-13 18:21:20,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149030128] [2022-07-13 18:21:20,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:21:20,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-13 18:21:20,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:20,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-13 18:21:20,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2022-07-13 18:21:20,374 INFO L87 Difference]: Start difference. First operand 5525 states and 6851 transitions. Second operand has 25 states, 25 states have (on average 15.6) internal successors, (390), 24 states have internal predecessors, (390), 12 states have call successors, (76), 6 states have call predecessors, (76), 5 states have return successors, (75), 12 states have call predecessors, (75), 12 states have call successors, (75) [2022-07-13 18:21:39,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:39,849 INFO L93 Difference]: Finished difference Result 42718 states and 52987 transitions. [2022-07-13 18:21:39,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 257 states. [2022-07-13 18:21:39,850 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 15.6) internal successors, (390), 24 states have internal predecessors, (390), 12 states have call successors, (76), 6 states have call predecessors, (76), 5 states have return successors, (75), 12 states have call predecessors, (75), 12 states have call successors, (75) Word has length 411 [2022-07-13 18:21:39,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:39,925 INFO L225 Difference]: With dead ends: 42718 [2022-07-13 18:21:39,925 INFO L226 Difference]: Without dead ends: 37841 [2022-07-13 18:21:39,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1193 GetRequests, 920 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30210 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=9434, Invalid=65916, Unknown=0, NotChecked=0, Total=75350 [2022-07-13 18:21:39,945 INFO L413 NwaCegarLoop]: 1961 mSDtfsCounter, 2897 mSDsluCounter, 12892 mSDsCounter, 0 mSdLazyCounter, 13651 mSolverCounterSat, 3006 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2929 SdHoareTripleChecker+Valid, 14853 SdHoareTripleChecker+Invalid, 16657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3006 IncrementalHoareTripleChecker+Valid, 13651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:39,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2929 Valid, 14853 Invalid, 16657 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3006 Valid, 13651 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-07-13 18:21:39,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37841 states. [2022-07-13 18:21:41,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37841 to 5513. [2022-07-13 18:21:41,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5513 states, 4425 states have (on average 1.2006779661016949) internal successors, (5313), 4475 states have internal predecessors, (5313), 763 states have call successors, (763), 324 states have call predecessors, (763), 324 states have return successors, (763), 713 states have call predecessors, (763), 763 states have call successors, (763) [2022-07-13 18:21:41,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5513 states to 5513 states and 6839 transitions. [2022-07-13 18:21:41,124 INFO L78 Accepts]: Start accepts. Automaton has 5513 states and 6839 transitions. Word has length 411 [2022-07-13 18:21:41,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:41,125 INFO L495 AbstractCegarLoop]: Abstraction has 5513 states and 6839 transitions. [2022-07-13 18:21:41,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 15.6) internal successors, (390), 24 states have internal predecessors, (390), 12 states have call successors, (76), 6 states have call predecessors, (76), 5 states have return successors, (75), 12 states have call predecessors, (75), 12 states have call successors, (75) [2022-07-13 18:21:41,125 INFO L276 IsEmpty]: Start isEmpty. Operand 5513 states and 6839 transitions. [2022-07-13 18:21:41,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2022-07-13 18:21:41,132 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:41,132 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 10, 10, 10, 9, 9, 8, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:21:41,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-13 18:21:41,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:21:41,348 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:41,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:41,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1408620933, now seen corresponding path program 1 times [2022-07-13 18:21:41,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:41,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014489607] [2022-07-13 18:21:41,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:41,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:21:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:21:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:21:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:21:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:21:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:21:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:21:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:21:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:21:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:21:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:21:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:21:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:21:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:21:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:21:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:21:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:21:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:21:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:21:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-13 18:21:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-07-13 18:21:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-07-13 18:21:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-07-13 18:21:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-07-13 18:21:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-07-13 18:21:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-07-13 18:21:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-07-13 18:21:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-07-13 18:21:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-07-13 18:21:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-07-13 18:21:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-07-13 18:21:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-07-13 18:21:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-07-13 18:21:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-07-13 18:21:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-07-13 18:21:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-07-13 18:21:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:41,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 1151 trivial. 0 not checked. [2022-07-13 18:21:41,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:41,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014489607] [2022-07-13 18:21:41,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014489607] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:21:41,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:21:41,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 18:21:41,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467757231] [2022-07-13 18:21:41,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:21:41,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:21:41,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:41,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:21:41,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:21:41,465 INFO L87 Difference]: Start difference. First operand 5513 states and 6839 transitions. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 8 states have internal predecessors, (144), 3 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-13 18:21:44,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:44,721 INFO L93 Difference]: Finished difference Result 14346 states and 18338 transitions. [2022-07-13 18:21:44,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-13 18:21:44,721 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 8 states have internal predecessors, (144), 3 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) Word has length 411 [2022-07-13 18:21:44,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:44,737 INFO L225 Difference]: With dead ends: 14346 [2022-07-13 18:21:44,737 INFO L226 Difference]: Without dead ends: 9479 [2022-07-13 18:21:44,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=221, Invalid=969, Unknown=0, NotChecked=0, Total=1190 [2022-07-13 18:21:44,743 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 674 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 2062 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 2303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 2062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:44,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 2873 Invalid, 2303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 2062 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 18:21:44,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9479 states. [2022-07-13 18:21:45,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9479 to 4140. [2022-07-13 18:21:45,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4140 states, 3361 states have (on average 1.1945849449568582) internal successors, (4015), 3397 states have internal predecessors, (4015), 535 states have call successors, (535), 243 states have call predecessors, (535), 243 states have return successors, (535), 499 states have call predecessors, (535), 535 states have call successors, (535) [2022-07-13 18:21:45,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4140 states to 4140 states and 5085 transitions. [2022-07-13 18:21:45,508 INFO L78 Accepts]: Start accepts. Automaton has 4140 states and 5085 transitions. Word has length 411 [2022-07-13 18:21:45,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:45,509 INFO L495 AbstractCegarLoop]: Abstraction has 4140 states and 5085 transitions. [2022-07-13 18:21:45,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 8 states have internal predecessors, (144), 3 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-13 18:21:45,509 INFO L276 IsEmpty]: Start isEmpty. Operand 4140 states and 5085 transitions. [2022-07-13 18:21:45,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2022-07-13 18:21:45,515 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:45,516 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 10, 10, 10, 9, 9, 8, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:21:45,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-07-13 18:21:45,516 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:45,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:45,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1075497316, now seen corresponding path program 1 times [2022-07-13 18:21:45,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:45,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546255882] [2022-07-13 18:21:45,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:45,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:21:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:21:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:21:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:21:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:21:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:21:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:21:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:21:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:21:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:21:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:21:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:21:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:21:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:21:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:21:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:21:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:21:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:21:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-13 18:21:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-07-13 18:21:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-13 18:21:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-13 18:21:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-07-13 18:21:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-07-13 18:21:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-07-13 18:21:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-07-13 18:21:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-07-13 18:21:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-07-13 18:21:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-07-13 18:21:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-07-13 18:21:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-07-13 18:21:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-07-13 18:21:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-07-13 18:21:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-07-13 18:21:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-07-13 18:21:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-07-13 18:21:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:45,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1178 trivial. 0 not checked. [2022-07-13 18:21:45,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:45,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546255882] [2022-07-13 18:21:45,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546255882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:21:45,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:21:45,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:21:45,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886306000] [2022-07-13 18:21:45,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:21:45,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:21:45,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:45,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:21:45,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:21:45,610 INFO L87 Difference]: Start difference. First operand 4140 states and 5085 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-13 18:21:46,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:46,317 INFO L93 Difference]: Finished difference Result 6552 states and 8043 transitions. [2022-07-13 18:21:46,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:21:46,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 412 [2022-07-13 18:21:46,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:46,323 INFO L225 Difference]: With dead ends: 6552 [2022-07-13 18:21:46,323 INFO L226 Difference]: Without dead ends: 2745 [2022-07-13 18:21:46,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:21:46,327 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 51 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:46,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 521 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:21:46,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2022-07-13 18:21:46,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2745. [2022-07-13 18:21:46,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2745 states, 2227 states have (on average 1.1764705882352942) internal successors, (2620), 2251 states have internal predecessors, (2620), 349 states have call successors, (349), 168 states have call predecessors, (349), 168 states have return successors, (349), 325 states have call predecessors, (349), 349 states have call successors, (349) [2022-07-13 18:21:46,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2745 states to 2745 states and 3318 transitions. [2022-07-13 18:21:46,863 INFO L78 Accepts]: Start accepts. Automaton has 2745 states and 3318 transitions. Word has length 412 [2022-07-13 18:21:46,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:46,863 INFO L495 AbstractCegarLoop]: Abstraction has 2745 states and 3318 transitions. [2022-07-13 18:21:46,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-13 18:21:46,863 INFO L276 IsEmpty]: Start isEmpty. Operand 2745 states and 3318 transitions. [2022-07-13 18:21:46,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2022-07-13 18:21:46,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:46,868 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 11, 9, 8, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:21:46,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-13 18:21:46,868 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:46,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:46,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1729377026, now seen corresponding path program 1 times [2022-07-13 18:21:46,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:46,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245578094] [2022-07-13 18:21:46,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:46,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:21:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:21:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:21:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:21:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:21:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:21:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:21:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:21:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:21:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:21:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:21:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:21:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:21:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:21:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:21:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:21:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:21:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:21:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-13 18:21:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-13 18:21:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-13 18:21:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-13 18:21:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-07-13 18:21:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-07-13 18:21:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-07-13 18:21:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-07-13 18:21:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-07-13 18:21:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-07-13 18:21:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-13 18:21:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-07-13 18:21:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-07-13 18:21:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-07-13 18:21:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-07-13 18:21:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-07-13 18:21:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-07-13 18:21:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-07-13 18:21:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-07-13 18:21:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:46,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 1183 trivial. 0 not checked. [2022-07-13 18:21:46,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:46,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245578094] [2022-07-13 18:21:46,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245578094] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:21:46,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:21:46,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 18:21:46,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762253848] [2022-07-13 18:21:46,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:21:46,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:21:46,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:46,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:21:46,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:21:46,981 INFO L87 Difference]: Start difference. First operand 2745 states and 3318 transitions. Second operand has 9 states, 9 states have (on average 16.11111111111111) internal successors, (145), 7 states have internal predecessors, (145), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-13 18:21:48,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:48,368 INFO L93 Difference]: Finished difference Result 5792 states and 7142 transitions. [2022-07-13 18:21:48,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 18:21:48,369 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.11111111111111) internal successors, (145), 7 states have internal predecessors, (145), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 416 [2022-07-13 18:21:48,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:48,375 INFO L225 Difference]: With dead ends: 5792 [2022-07-13 18:21:48,375 INFO L226 Difference]: Without dead ends: 3533 [2022-07-13 18:21:48,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-07-13 18:21:48,378 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 465 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:48,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 1735 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 18:21:48,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3533 states. [2022-07-13 18:21:48,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3533 to 2751. [2022-07-13 18:21:48,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2751 states, 2233 states have (on average 1.1759964173757278) internal successors, (2626), 2254 states have internal predecessors, (2626), 349 states have call successors, (349), 168 states have call predecessors, (349), 168 states have return successors, (349), 328 states have call predecessors, (349), 349 states have call successors, (349) [2022-07-13 18:21:48,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2751 states to 2751 states and 3324 transitions. [2022-07-13 18:21:48,929 INFO L78 Accepts]: Start accepts. Automaton has 2751 states and 3324 transitions. Word has length 416 [2022-07-13 18:21:48,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:48,930 INFO L495 AbstractCegarLoop]: Abstraction has 2751 states and 3324 transitions. [2022-07-13 18:21:48,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.11111111111111) internal successors, (145), 7 states have internal predecessors, (145), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-13 18:21:48,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2751 states and 3324 transitions. [2022-07-13 18:21:48,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2022-07-13 18:21:48,934 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:48,934 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 11, 9, 8, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:21:48,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-13 18:21:48,934 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:48,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:48,935 INFO L85 PathProgramCache]: Analyzing trace with hash -15060353, now seen corresponding path program 1 times [2022-07-13 18:21:48,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:48,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319637626] [2022-07-13 18:21:48,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:48,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:48,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:21:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:48,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:21:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:48,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:21:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:48,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:21:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:48,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:21:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:48,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:21:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:48,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:21:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:48,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:21:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:48,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:21:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:21:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:21:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:21:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:21:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:21:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:21:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:21:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:21:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:21:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:21:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-13 18:21:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-07-13 18:21:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-07-13 18:21:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-07-13 18:21:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-07-13 18:21:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-07-13 18:21:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-07-13 18:21:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-07-13 18:21:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-07-13 18:21:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-07-13 18:21:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-07-13 18:21:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-07-13 18:21:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-07-13 18:21:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-07-13 18:21:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-07-13 18:21:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-07-13 18:21:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-07-13 18:21:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-07-13 18:21:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 1182 trivial. 0 not checked. [2022-07-13 18:21:49,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:49,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319637626] [2022-07-13 18:21:49,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319637626] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:21:49,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5351304] [2022-07-13 18:21:49,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:49,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:21:49,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:21:49,046 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:21:49,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-13 18:21:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:49,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 1470 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 18:21:49,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:21:49,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 187 proven. 367 refuted. 0 times theorem prover too weak. 671 trivial. 0 not checked. [2022-07-13 18:21:49,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:21:49,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 23 proven. 33 refuted. 0 times theorem prover too weak. 1169 trivial. 0 not checked. [2022-07-13 18:21:49,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5351304] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:21:49,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:21:49,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 12] total 20 [2022-07-13 18:21:49,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330254701] [2022-07-13 18:21:49,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:21:49,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-13 18:21:49,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:49,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-13 18:21:49,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2022-07-13 18:21:49,874 INFO L87 Difference]: Start difference. First operand 2751 states and 3324 transitions. Second operand has 20 states, 20 states have (on average 16.3) internal successors, (326), 17 states have internal predecessors, (326), 7 states have call successors, (80), 7 states have call predecessors, (80), 9 states have return successors, (79), 9 states have call predecessors, (79), 7 states have call successors, (79) [2022-07-13 18:21:55,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:55,825 INFO L93 Difference]: Finished difference Result 11044 states and 13957 transitions. [2022-07-13 18:21:55,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-07-13 18:21:55,825 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 16.3) internal successors, (326), 17 states have internal predecessors, (326), 7 states have call successors, (80), 7 states have call predecessors, (80), 9 states have return successors, (79), 9 states have call predecessors, (79), 7 states have call successors, (79) Word has length 416 [2022-07-13 18:21:55,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:55,836 INFO L225 Difference]: With dead ends: 11044 [2022-07-13 18:21:55,836 INFO L226 Difference]: Without dead ends: 8779 [2022-07-13 18:21:55,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1008 GetRequests, 922 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2149 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=742, Invalid=6740, Unknown=0, NotChecked=0, Total=7482 [2022-07-13 18:21:55,839 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 1726 mSDsluCounter, 7447 mSDsCounter, 0 mSdLazyCounter, 5396 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1738 SdHoareTripleChecker+Valid, 8131 SdHoareTripleChecker+Invalid, 6124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 5396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:55,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1738 Valid, 8131 Invalid, 6124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 5396 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 18:21:55,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8779 states. [2022-07-13 18:21:56,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8779 to 4840. [2022-07-13 18:21:56,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4840 states, 3938 states have (on average 1.175723717623159) internal successors, (4630), 3974 states have internal predecessors, (4630), 607 states have call successors, (607), 294 states have call predecessors, (607), 294 states have return successors, (607), 571 states have call predecessors, (607), 607 states have call successors, (607) [2022-07-13 18:21:56,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4840 states to 4840 states and 5844 transitions. [2022-07-13 18:21:56,873 INFO L78 Accepts]: Start accepts. Automaton has 4840 states and 5844 transitions. Word has length 416 [2022-07-13 18:21:56,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:56,873 INFO L495 AbstractCegarLoop]: Abstraction has 4840 states and 5844 transitions. [2022-07-13 18:21:56,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 16.3) internal successors, (326), 17 states have internal predecessors, (326), 7 states have call successors, (80), 7 states have call predecessors, (80), 9 states have return successors, (79), 9 states have call predecessors, (79), 7 states have call successors, (79) [2022-07-13 18:21:56,874 INFO L276 IsEmpty]: Start isEmpty. Operand 4840 states and 5844 transitions. [2022-07-13 18:21:56,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2022-07-13 18:21:56,878 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:56,878 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 11, 11, 11, 10, 10, 9, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:21:56,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-13 18:21:57,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:21:57,092 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:57,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:57,092 INFO L85 PathProgramCache]: Analyzing trace with hash -557149606, now seen corresponding path program 1 times [2022-07-13 18:21:57,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:57,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5839423] [2022-07-13 18:21:57,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:57,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:21:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:21:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:21:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:21:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:21:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:21:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:21:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:21:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:21:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:21:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:21:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:21:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:21:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:21:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:21:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:21:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:21:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:21:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:21:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:21:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:21:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-13 18:21:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-13 18:21:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-13 18:21:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-13 18:21:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-07-13 18:21:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-07-13 18:21:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-07-13 18:21:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-07-13 18:21:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-13 18:21:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-07-13 18:21:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-07-13 18:21:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-07-13 18:21:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-07-13 18:21:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-07-13 18:21:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-07-13 18:21:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-07-13 18:21:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 1215 trivial. 0 not checked. [2022-07-13 18:21:57,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:57,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5839423] [2022-07-13 18:21:57,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5839423] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:21:57,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384404552] [2022-07-13 18:21:57,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:57,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:21:57,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:21:57,232 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:21:57,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-13 18:21:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:57,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 1478 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-13 18:21:57,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:21:57,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-07-13 18:21:57,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:21:57,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384404552] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:21:57,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:21:57,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-13 18:21:57,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135620647] [2022-07-13 18:21:57,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:21:57,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:21:57,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:57,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:21:57,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:21:57,490 INFO L87 Difference]: Start difference. First operand 4840 states and 5844 transitions. Second operand has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 8 states have internal predecessors, (159), 3 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-13 18:22:00,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:22:00,087 INFO L93 Difference]: Finished difference Result 9605 states and 11982 transitions. [2022-07-13 18:22:00,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-13 18:22:00,087 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 8 states have internal predecessors, (159), 3 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) Word has length 420 [2022-07-13 18:22:00,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:22:00,099 INFO L225 Difference]: With dead ends: 9605 [2022-07-13 18:22:00,099 INFO L226 Difference]: Without dead ends: 7283 [2022-07-13 18:22:00,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2022-07-13 18:22:00,103 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 1004 mSDsluCounter, 2291 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 2878 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:22:00,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 2878 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 18:22:00,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7283 states. [2022-07-13 18:22:01,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7283 to 4810. [2022-07-13 18:22:01,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4810 states, 3914 states have (on average 1.1722023505365355) internal successors, (4588), 3950 states have internal predecessors, (4588), 601 states have call successors, (601), 294 states have call predecessors, (601), 294 states have return successors, (601), 565 states have call predecessors, (601), 601 states have call successors, (601) [2022-07-13 18:22:01,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 5790 transitions. [2022-07-13 18:22:01,146 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 5790 transitions. Word has length 420 [2022-07-13 18:22:01,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:22:01,146 INFO L495 AbstractCegarLoop]: Abstraction has 4810 states and 5790 transitions. [2022-07-13 18:22:01,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 8 states have internal predecessors, (159), 3 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-13 18:22:01,146 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 5790 transitions. [2022-07-13 18:22:01,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-07-13 18:22:01,150 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:22:01,150 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 11, 11, 11, 10, 10, 9, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:22:01,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-07-13 18:22:01,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-07-13 18:22:01,354 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:22:01,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:22:01,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1341260321, now seen corresponding path program 1 times [2022-07-13 18:22:01,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:22:01,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076850123] [2022-07-13 18:22:01,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:22:01,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:22:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:22:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:22:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:22:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:22:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:22:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:22:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:22:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:22:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:22:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:22:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:22:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:22:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:22:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:22:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:22:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:22:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:22:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:22:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:22:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:22:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:22:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-13 18:22:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-13 18:22:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-13 18:22:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-13 18:22:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-07-13 18:22:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-07-13 18:22:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-07-13 18:22:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-07-13 18:22:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-13 18:22:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-07-13 18:22:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-07-13 18:22:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-07-13 18:22:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-07-13 18:22:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-07-13 18:22:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-07-13 18:22:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-07-13 18:22:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:01,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1215 trivial. 0 not checked. [2022-07-13 18:22:01,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:22:01,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076850123] [2022-07-13 18:22:01,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076850123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:22:01,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:22:01,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 18:22:01,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555928004] [2022-07-13 18:22:01,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:22:01,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:22:01,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:22:01,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:22:01,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:22:01,469 INFO L87 Difference]: Start difference. First operand 4810 states and 5790 transitions. Second operand has 10 states, 10 states have (on average 14.0) internal successors, (140), 8 states have internal predecessors, (140), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-13 18:22:04,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:22:04,714 INFO L93 Difference]: Finished difference Result 11997 states and 14865 transitions. [2022-07-13 18:22:04,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-13 18:22:04,715 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.0) internal successors, (140), 8 states have internal predecessors, (140), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 422 [2022-07-13 18:22:04,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:22:04,726 INFO L225 Difference]: With dead ends: 11997 [2022-07-13 18:22:04,726 INFO L226 Difference]: Without dead ends: 7613 [2022-07-13 18:22:04,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2022-07-13 18:22:04,729 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 1101 mSDsluCounter, 2445 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 3002 SdHoareTripleChecker+Invalid, 2219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 18:22:04,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 3002 Invalid, 2219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 1912 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 18:22:04,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7613 states. [2022-07-13 18:22:05,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7613 to 4750. [2022-07-13 18:22:05,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4750 states, 3866 states have (on average 1.1642524573202275) internal successors, (4501), 3902 states have internal predecessors, (4501), 589 states have call successors, (589), 294 states have call predecessors, (589), 294 states have return successors, (589), 553 states have call predecessors, (589), 589 states have call successors, (589) [2022-07-13 18:22:05,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4750 states to 4750 states and 5679 transitions. [2022-07-13 18:22:05,799 INFO L78 Accepts]: Start accepts. Automaton has 4750 states and 5679 transitions. Word has length 422 [2022-07-13 18:22:05,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:22:05,799 INFO L495 AbstractCegarLoop]: Abstraction has 4750 states and 5679 transitions. [2022-07-13 18:22:05,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.0) internal successors, (140), 8 states have internal predecessors, (140), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-13 18:22:05,799 INFO L276 IsEmpty]: Start isEmpty. Operand 4750 states and 5679 transitions. [2022-07-13 18:22:05,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-07-13 18:22:05,803 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:22:05,803 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 11, 11, 11, 10, 10, 9, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:22:05,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-07-13 18:22:05,803 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:22:05,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:22:05,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1092721633, now seen corresponding path program 1 times [2022-07-13 18:22:05,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:22:05,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530448718] [2022-07-13 18:22:05,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:22:05,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:22:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:22:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:22:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:22:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:22:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:22:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:22:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:22:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:22:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:22:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:22:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:22:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:22:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:22:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:22:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:22:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:22:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:22:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:22:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:22:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:22:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:22:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-13 18:22:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-13 18:22:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-13 18:22:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-13 18:22:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-07-13 18:22:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-07-13 18:22:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-07-13 18:22:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-07-13 18:22:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-13 18:22:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-07-13 18:22:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-07-13 18:22:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-07-13 18:22:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-07-13 18:22:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-07-13 18:22:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-07-13 18:22:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-07-13 18:22:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:05,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 1235 trivial. 0 not checked. [2022-07-13 18:22:05,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:22:05,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530448718] [2022-07-13 18:22:05,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530448718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:22:05,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:22:05,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:22:05,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213564290] [2022-07-13 18:22:05,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:22:05,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:22:05,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:22:05,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:22:05,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:22:05,891 INFO L87 Difference]: Start difference. First operand 4750 states and 5679 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-13 18:22:07,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:22:07,237 INFO L93 Difference]: Finished difference Result 7362 states and 8834 transitions. [2022-07-13 18:22:07,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:22:07,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 422 [2022-07-13 18:22:07,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:22:07,244 INFO L225 Difference]: With dead ends: 7362 [2022-07-13 18:22:07,245 INFO L226 Difference]: Without dead ends: 5106 [2022-07-13 18:22:07,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:22:07,247 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 175 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:22:07,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 701 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:22:07,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5106 states. [2022-07-13 18:22:08,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5106 to 4750. [2022-07-13 18:22:08,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4750 states, 3866 states have (on average 1.1580444904293843) internal successors, (4477), 3902 states have internal predecessors, (4477), 589 states have call successors, (589), 294 states have call predecessors, (589), 294 states have return successors, (589), 553 states have call predecessors, (589), 589 states have call successors, (589) [2022-07-13 18:22:08,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4750 states to 4750 states and 5655 transitions. [2022-07-13 18:22:08,293 INFO L78 Accepts]: Start accepts. Automaton has 4750 states and 5655 transitions. Word has length 422 [2022-07-13 18:22:08,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:22:08,294 INFO L495 AbstractCegarLoop]: Abstraction has 4750 states and 5655 transitions. [2022-07-13 18:22:08,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-13 18:22:08,294 INFO L276 IsEmpty]: Start isEmpty. Operand 4750 states and 5655 transitions. [2022-07-13 18:22:08,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-07-13 18:22:08,298 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:22:08,298 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 11, 11, 11, 10, 10, 9, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:22:08,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-07-13 18:22:08,298 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:22:08,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:22:08,298 INFO L85 PathProgramCache]: Analyzing trace with hash 347045947, now seen corresponding path program 1 times [2022-07-13 18:22:08,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:22:08,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862740617] [2022-07-13 18:22:08,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:22:08,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:22:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:22:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:22:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:22:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:22:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:22:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:22:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:22:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:22:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:22:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:22:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:22:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:22:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:22:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:22:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:22:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:22:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:22:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:22:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-13 18:22:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-13 18:22:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-13 18:22:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-13 18:22:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-07-13 18:22:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-07-13 18:22:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-07-13 18:22:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-07-13 18:22:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-07-13 18:22:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-07-13 18:22:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-13 18:22:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-07-13 18:22:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-07-13 18:22:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-07-13 18:22:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-07-13 18:22:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-07-13 18:22:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-07-13 18:22:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-07-13 18:22:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-07-13 18:22:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 47 proven. 67 refuted. 0 times theorem prover too weak. 1146 trivial. 0 not checked. [2022-07-13 18:22:08,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:22:08,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862740617] [2022-07-13 18:22:08,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862740617] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:22:08,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902241971] [2022-07-13 18:22:08,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:22:08,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:22:08,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:22:08,524 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:22:08,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-13 18:22:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:08,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-13 18:22:08,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:22:09,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 528 proven. 83 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2022-07-13 18:22:09,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:22:09,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 52 proven. 73 refuted. 0 times theorem prover too weak. 1135 trivial. 0 not checked. [2022-07-13 18:22:09,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902241971] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:22:09,485 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:22:09,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 23 [2022-07-13 18:22:09,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402084211] [2022-07-13 18:22:09,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:22:09,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-13 18:22:09,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:22:09,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-13 18:22:09,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2022-07-13 18:22:09,487 INFO L87 Difference]: Start difference. First operand 4750 states and 5655 transitions. Second operand has 23 states, 23 states have (on average 10.869565217391305) internal successors, (250), 19 states have internal predecessors, (250), 5 states have call successors, (56), 9 states have call predecessors, (56), 14 states have return successors, (53), 8 states have call predecessors, (53), 5 states have call successors, (53) [2022-07-13 18:22:12,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:22:12,810 INFO L93 Difference]: Finished difference Result 8222 states and 9790 transitions. [2022-07-13 18:22:12,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-13 18:22:12,811 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.869565217391305) internal successors, (250), 19 states have internal predecessors, (250), 5 states have call successors, (56), 9 states have call predecessors, (56), 14 states have return successors, (53), 8 states have call predecessors, (53), 5 states have call successors, (53) Word has length 422 [2022-07-13 18:22:12,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:22:12,819 INFO L225 Difference]: With dead ends: 8222 [2022-07-13 18:22:12,820 INFO L226 Difference]: Without dead ends: 4817 [2022-07-13 18:22:12,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 975 GetRequests, 910 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=650, Invalid=3256, Unknown=0, NotChecked=0, Total=3906 [2022-07-13 18:22:12,824 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 1547 mSDsluCounter, 5735 mSDsCounter, 0 mSdLazyCounter, 2569 mSolverCounterSat, 579 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 6472 SdHoareTripleChecker+Invalid, 3148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 579 IncrementalHoareTripleChecker+Valid, 2569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:22:12,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1562 Valid, 6472 Invalid, 3148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [579 Valid, 2569 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 18:22:12,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4817 states. [2022-07-13 18:22:13,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4817 to 3460. [2022-07-13 18:22:13,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3460 states, 2846 states have (on average 1.1451159522136332) internal successors, (3259), 2870 states have internal predecessors, (3259), 385 states have call successors, (385), 228 states have call predecessors, (385), 228 states have return successors, (385), 361 states have call predecessors, (385), 385 states have call successors, (385) [2022-07-13 18:22:13,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3460 states to 3460 states and 4029 transitions. [2022-07-13 18:22:13,737 INFO L78 Accepts]: Start accepts. Automaton has 3460 states and 4029 transitions. Word has length 422 [2022-07-13 18:22:13,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:22:13,738 INFO L495 AbstractCegarLoop]: Abstraction has 3460 states and 4029 transitions. [2022-07-13 18:22:13,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.869565217391305) internal successors, (250), 19 states have internal predecessors, (250), 5 states have call successors, (56), 9 states have call predecessors, (56), 14 states have return successors, (53), 8 states have call predecessors, (53), 5 states have call successors, (53) [2022-07-13 18:22:13,738 INFO L276 IsEmpty]: Start isEmpty. Operand 3460 states and 4029 transitions. [2022-07-13 18:22:13,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-07-13 18:22:13,741 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:22:13,741 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 10, 10, 10, 10, 9, 8, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:22:13,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-13 18:22:13,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-07-13 18:22:13,944 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:22:13,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:22:13,944 INFO L85 PathProgramCache]: Analyzing trace with hash 636652698, now seen corresponding path program 1 times [2022-07-13 18:22:13,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:22:13,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186433480] [2022-07-13 18:22:13,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:22:13,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:22:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:22:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:22:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:22:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:22:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:22:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:22:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:22:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:22:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:22:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:22:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:22:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:22:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:22:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:22:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:22:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:22:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:22:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:22:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-13 18:22:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-13 18:22:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-13 18:22:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-13 18:22:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-07-13 18:22:14,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-07-13 18:22:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-07-13 18:22:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-07-13 18:22:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-07-13 18:22:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-07-13 18:22:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-13 18:22:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-07-13 18:22:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-07-13 18:22:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-07-13 18:22:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-07-13 18:22:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-07-13 18:22:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-07-13 18:22:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-07-13 18:22:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-07-13 18:22:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 22 proven. 26 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2022-07-13 18:22:14,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:22:14,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186433480] [2022-07-13 18:22:14,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186433480] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:22:14,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346238287] [2022-07-13 18:22:14,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:22:14,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:22:14,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:22:14,197 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:22:14,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-13 18:22:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:14,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-13 18:22:14,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:22:15,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 482 proven. 220 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2022-07-13 18:22:15,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:22:16,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 40 proven. 87 refuted. 0 times theorem prover too weak. 1137 trivial. 0 not checked. [2022-07-13 18:22:16,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346238287] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:22:16,057 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:22:16,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 21, 23] total 56 [2022-07-13 18:22:16,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958676892] [2022-07-13 18:22:16,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:22:16,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-07-13 18:22:16,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:22:16,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-07-13 18:22:16,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=2757, Unknown=0, NotChecked=0, Total=3080 [2022-07-13 18:22:16,059 INFO L87 Difference]: Start difference. First operand 3460 states and 4029 transitions. Second operand has 56 states, 56 states have (on average 7.767857142857143) internal successors, (435), 50 states have internal predecessors, (435), 14 states have call successors, (81), 10 states have call predecessors, (81), 15 states have return successors, (82), 18 states have call predecessors, (82), 14 states have call successors, (82)