./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.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/combinations/Problem05_label42+token_ring.02.cil-2.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 954b1f05390ccaafb1cee97c6b5216f4167723fe344c33082a0f73951b4d6f58 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 19:52:26,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 19:52:26,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 19:52:26,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 19:52:26,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 19:52:26,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 19:52:26,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 19:52:26,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 19:52:26,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 19:52:26,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 19:52:26,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 19:52:26,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 19:52:26,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 19:52:26,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 19:52:26,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 19:52:26,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 19:52:26,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 19:52:26,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 19:52:26,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 19:52:26,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 19:52:26,334 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 19:52:26,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 19:52:26,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 19:52:26,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 19:52:26,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 19:52:26,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 19:52:26,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 19:52:26,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 19:52:26,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 19:52:26,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 19:52:26,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 19:52:26,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 19:52:26,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 19:52:26,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 19:52:26,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 19:52:26,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 19:52:26,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 19:52:26,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 19:52:26,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 19:52:26,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 19:52:26,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 19:52:26,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 19:52:26,349 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 19:52:26,373 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 19:52:26,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 19:52:26,373 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 19:52:26,374 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 19:52:26,374 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 19:52:26,374 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 19:52:26,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 19:52:26,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 19:52:26,375 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 19:52:26,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 19:52:26,376 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 19:52:26,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 19:52:26,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 19:52:26,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 19:52:26,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 19:52:26,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 19:52:26,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 19:52:26,377 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 19:52:26,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 19:52:26,377 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 19:52:26,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 19:52:26,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 19:52:26,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 19:52:26,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 19:52:26,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:52:26,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 19:52:26,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 19:52:26,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 19:52:26,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 19:52:26,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 19:52:26,379 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 19:52:26,379 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 19:52:26,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 19:52:26,379 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 954b1f05390ccaafb1cee97c6b5216f4167723fe344c33082a0f73951b4d6f58 [2022-07-13 19:52:26,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 19:52:26,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 19:52:26,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 19:52:26,607 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 19:52:26,607 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 19:52:26,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c [2022-07-13 19:52:26,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/760f8f807/8ce3d5d4d05b4b93a07f1b75564195c8/FLAG2fc152ea5 [2022-07-13 19:52:27,327 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 19:52:27,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-2.c [2022-07-13 19:52:27,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/760f8f807/8ce3d5d4d05b4b93a07f1b75564195c8/FLAG2fc152ea5 [2022-07-13 19:52:27,700 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/760f8f807/8ce3d5d4d05b4b93a07f1b75564195c8 [2022-07-13 19:52:27,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 19:52:27,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 19:52:27,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 19:52:27,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 19:52:27,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 19:52:27,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:52:27" (1/1) ... [2022-07-13 19:52:27,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31523c5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:52:27, skipping insertion in model container [2022-07-13 19:52:27,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:52:27" (1/1) ... [2022-07-13 19:52:27,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 19:52:27,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 19:52:28,978 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/combinations/Problem05_label42+token_ring.02.cil-2.c[378560,378573] [2022-07-13 19:52:29,002 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/combinations/Problem05_label42+token_ring.02.cil-2.c[383339,383352] [2022-07-13 19:52:29,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:52:29,141 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 19:52:29,795 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/combinations/Problem05_label42+token_ring.02.cil-2.c[378560,378573] [2022-07-13 19:52:29,802 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/combinations/Problem05_label42+token_ring.02.cil-2.c[383339,383352] [2022-07-13 19:52:29,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:52:29,855 INFO L208 MainTranslator]: Completed translation [2022-07-13 19:52:29,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:52:29 WrapperNode [2022-07-13 19:52:29,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 19:52:29,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 19:52:29,857 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 19:52:29,857 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 19:52:29,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:52:29" (1/1) ... [2022-07-13 19:52:29,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:52:29" (1/1) ... [2022-07-13 19:52:30,188 INFO L137 Inliner]: procedures = 48, calls = 48, calls flagged for inlining = 25, calls inlined = 25, statements flattened = 12624 [2022-07-13 19:52:30,189 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 19:52:30,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 19:52:30,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 19:52:30,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 19:52:30,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:52:29" (1/1) ... [2022-07-13 19:52:30,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:52:29" (1/1) ... [2022-07-13 19:52:30,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:52:29" (1/1) ... [2022-07-13 19:52:30,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:52:29" (1/1) ... [2022-07-13 19:52:30,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:52:29" (1/1) ... [2022-07-13 19:52:30,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:52:29" (1/1) ... [2022-07-13 19:52:30,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:52:29" (1/1) ... [2022-07-13 19:52:30,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 19:52:30,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 19:52:30,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 19:52:30,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 19:52:30,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:52:29" (1/1) ... [2022-07-13 19:52:30,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:52:30,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:52:30,788 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 19:52:30,804 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 19:52:30,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 19:52:30,822 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-13 19:52:30,822 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-13 19:52:30,822 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-13 19:52:30,823 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-13 19:52:30,823 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-13 19:52:30,823 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-13 19:52:30,823 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 19:52:30,823 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 19:52:30,823 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-13 19:52:30,823 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-13 19:52:30,824 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-13 19:52:30,824 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-13 19:52:30,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 19:52:30,824 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-13 19:52:30,824 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-13 19:52:30,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 19:52:30,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 19:52:30,939 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 19:52:30,941 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 19:52:35,658 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 19:52:35,726 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 19:52:35,726 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-13 19:52:35,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:52:35 BoogieIcfgContainer [2022-07-13 19:52:35,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 19:52:35,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 19:52:35,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 19:52:35,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 19:52:35,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 07:52:27" (1/3) ... [2022-07-13 19:52:35,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ddd404e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:52:35, skipping insertion in model container [2022-07-13 19:52:35,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:52:29" (2/3) ... [2022-07-13 19:52:35,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ddd404e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:52:35, skipping insertion in model container [2022-07-13 19:52:35,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:52:35" (3/3) ... [2022-07-13 19:52:35,740 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.02.cil-2.c [2022-07-13 19:52:35,749 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 19:52:35,750 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 19:52:35,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 19:52:35,829 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@3e783719, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@39d20318 [2022-07-13 19:52:35,829 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 19:52:35,838 INFO L276 IsEmpty]: Start isEmpty. Operand has 2323 states, 2295 states have (on average 1.857516339869281) internal successors, (4263), 2300 states have internal predecessors, (4263), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-13 19:52:35,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-13 19:52:35,851 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:52:35,852 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:52:35,852 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:52:35,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:52:35,857 INFO L85 PathProgramCache]: Analyzing trace with hash -2062992276, now seen corresponding path program 1 times [2022-07-13 19:52:35,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:52:35,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772229062] [2022-07-13 19:52:35,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:52:35,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:52:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:36,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:52:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:36,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:52:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:36,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:52:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:36,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:52:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:36,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:52:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:36,140 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 19:52:36,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:52:36,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772229062] [2022-07-13 19:52:36,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772229062] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:52:36,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:52:36,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 19:52:36,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250758820] [2022-07-13 19:52:36,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:52:36,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 19:52:36,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:52:36,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 19:52:36,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 19:52:36,184 INFO L87 Difference]: Start difference. First operand has 2323 states, 2295 states have (on average 1.857516339869281) internal successors, (4263), 2300 states have internal predecessors, (4263), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:52:36,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:52:36,901 INFO L93 Difference]: Finished difference Result 4824 states and 8887 transitions. [2022-07-13 19:52:36,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 19:52:36,904 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2022-07-13 19:52:36,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:52:36,928 INFO L225 Difference]: With dead ends: 4824 [2022-07-13 19:52:36,928 INFO L226 Difference]: Without dead ends: 2441 [2022-07-13 19:52:36,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 19:52:36,940 INFO L413 NwaCegarLoop]: 4249 mSDtfsCounter, 4444 mSDsluCounter, 12443 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4453 SdHoareTripleChecker+Valid, 16692 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 19:52:36,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4453 Valid, 16692 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 19:52:36,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2441 states. [2022-07-13 19:52:37,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2441 to 2376. [2022-07-13 19:52:37,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2376 states, 2332 states have (on average 1.8340480274442539) internal successors, (4277), 2336 states have internal predecessors, (4277), 29 states have call successors, (29), 13 states have call predecessors, (29), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2022-07-13 19:52:37,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2376 states to 2376 states and 4336 transitions. [2022-07-13 19:52:37,045 INFO L78 Accepts]: Start accepts. Automaton has 2376 states and 4336 transitions. Word has length 69 [2022-07-13 19:52:37,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:52:37,046 INFO L495 AbstractCegarLoop]: Abstraction has 2376 states and 4336 transitions. [2022-07-13 19:52:37,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:52:37,047 INFO L276 IsEmpty]: Start isEmpty. Operand 2376 states and 4336 transitions. [2022-07-13 19:52:37,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-13 19:52:37,053 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:52:37,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:52:37,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 19:52:37,054 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:52:37,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:52:37,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1960277912, now seen corresponding path program 1 times [2022-07-13 19:52:37,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:52:37,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480190479] [2022-07-13 19:52:37,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:52:37,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:52:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:37,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:52:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:37,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:52:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:37,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:52:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:37,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:52:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:37,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:52:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:37,171 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 19:52:37,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:52:37,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480190479] [2022-07-13 19:52:37,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480190479] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:52:37,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:52:37,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:52:37,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103751377] [2022-07-13 19:52:37,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:52:37,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:52:37,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:52:37,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:52:37,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:52:37,174 INFO L87 Difference]: Start difference. First operand 2376 states and 4336 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:52:37,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:52:37,907 INFO L93 Difference]: Finished difference Result 2838 states and 5030 transitions. [2022-07-13 19:52:37,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:52:37,908 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2022-07-13 19:52:37,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:52:37,917 INFO L225 Difference]: With dead ends: 2838 [2022-07-13 19:52:37,918 INFO L226 Difference]: Without dead ends: 2593 [2022-07-13 19:52:37,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:52:37,921 INFO L413 NwaCegarLoop]: 4270 mSDtfsCounter, 4365 mSDsluCounter, 16510 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4374 SdHoareTripleChecker+Valid, 20780 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 19:52:37,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4374 Valid, 20780 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 19:52:37,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2022-07-13 19:52:37,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 2490. [2022-07-13 19:52:37,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 2428 states have (on average 1.82001647446458) internal successors, (4419), 2433 states have internal predecessors, (4419), 40 states have call successors, (40), 19 states have call predecessors, (40), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2022-07-13 19:52:37,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 4502 transitions. [2022-07-13 19:52:37,970 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 4502 transitions. Word has length 69 [2022-07-13 19:52:37,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:52:37,970 INFO L495 AbstractCegarLoop]: Abstraction has 2490 states and 4502 transitions. [2022-07-13 19:52:37,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:52:37,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 4502 transitions. [2022-07-13 19:52:37,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-13 19:52:37,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:52:37,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:52:37,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 19:52:37,972 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:52:37,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:52:37,972 INFO L85 PathProgramCache]: Analyzing trace with hash -573492502, now seen corresponding path program 1 times [2022-07-13 19:52:37,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:52:37,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542902256] [2022-07-13 19:52:37,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:52:37,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:52:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:37,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:52:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:38,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:52:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:38,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:52:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:38,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:52:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:38,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:52:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:38,046 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 19:52:38,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:52:38,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542902256] [2022-07-13 19:52:38,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542902256] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:52:38,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:52:38,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:52:38,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053469449] [2022-07-13 19:52:38,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:52:38,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:52:38,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:52:38,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:52:38,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:52:38,054 INFO L87 Difference]: Start difference. First operand 2490 states and 4502 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:52:38,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:52:38,770 INFO L93 Difference]: Finished difference Result 3239 states and 5624 transitions. [2022-07-13 19:52:38,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:52:38,771 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2022-07-13 19:52:38,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:52:38,783 INFO L225 Difference]: With dead ends: 3239 [2022-07-13 19:52:38,783 INFO L226 Difference]: Without dead ends: 2880 [2022-07-13 19:52:38,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:52:38,787 INFO L413 NwaCegarLoop]: 4181 mSDtfsCounter, 4399 mSDsluCounter, 16296 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4408 SdHoareTripleChecker+Valid, 20477 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 19:52:38,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4408 Valid, 20477 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 19:52:38,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2022-07-13 19:52:38,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 2719. [2022-07-13 19:52:38,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2719 states, 2621 states have (on average 1.794734834032812) internal successors, (4704), 2628 states have internal predecessors, (4704), 62 states have call successors, (62), 31 states have call predecessors, (62), 34 states have return successors, (73), 63 states have call predecessors, (73), 60 states have call successors, (73) [2022-07-13 19:52:38,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 4839 transitions. [2022-07-13 19:52:38,938 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 4839 transitions. Word has length 69 [2022-07-13 19:52:38,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:52:38,938 INFO L495 AbstractCegarLoop]: Abstraction has 2719 states and 4839 transitions. [2022-07-13 19:52:38,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:52:38,939 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 4839 transitions. [2022-07-13 19:52:38,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-13 19:52:38,941 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:52:38,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:52:38,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 19:52:38,942 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:52:38,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:52:38,943 INFO L85 PathProgramCache]: Analyzing trace with hash 302526504, now seen corresponding path program 1 times [2022-07-13 19:52:38,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:52:38,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025894075] [2022-07-13 19:52:38,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:52:38,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:52:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:38,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:52:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:39,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:52:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:39,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:52:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:39,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:52:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:39,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:52:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:39,056 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 19:52:39,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:52:39,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025894075] [2022-07-13 19:52:39,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025894075] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:52:39,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:52:39,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:52:39,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329849745] [2022-07-13 19:52:39,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:52:39,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:52:39,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:52:39,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:52:39,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:52:39,058 INFO L87 Difference]: Start difference. First operand 2719 states and 4839 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:52:39,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:52:39,842 INFO L93 Difference]: Finished difference Result 4113 states and 6915 transitions. [2022-07-13 19:52:39,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 19:52:39,843 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2022-07-13 19:52:39,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:52:39,859 INFO L225 Difference]: With dead ends: 4113 [2022-07-13 19:52:39,861 INFO L226 Difference]: Without dead ends: 3525 [2022-07-13 19:52:39,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 19:52:39,876 INFO L413 NwaCegarLoop]: 4279 mSDtfsCounter, 4371 mSDsluCounter, 16499 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4379 SdHoareTripleChecker+Valid, 20778 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 19:52:39,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4379 Valid, 20778 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 19:52:39,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3525 states. [2022-07-13 19:52:39,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3525 to 3131. [2022-07-13 19:52:39,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 2965 states have (on average 1.7551433389544688) internal successors, (5204), 2976 states have internal predecessors, (5204), 102 states have call successors, (102), 55 states have call predecessors, (102), 62 states have return successors, (135), 107 states have call predecessors, (135), 100 states have call successors, (135) [2022-07-13 19:52:39,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 5441 transitions. [2022-07-13 19:52:39,981 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 5441 transitions. Word has length 69 [2022-07-13 19:52:39,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:52:39,985 INFO L495 AbstractCegarLoop]: Abstraction has 3131 states and 5441 transitions. [2022-07-13 19:52:39,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:52:39,986 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 5441 transitions. [2022-07-13 19:52:39,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-13 19:52:39,987 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:52:39,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:52:39,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 19:52:39,988 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:52:39,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:52:39,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1840866534, now seen corresponding path program 1 times [2022-07-13 19:52:39,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:52:39,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004737760] [2022-07-13 19:52:39,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:52:39,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:52:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:40,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:52:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:40,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:52:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:40,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:52:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:40,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:52:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:40,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:52:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:40,070 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 19:52:40,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:52:40,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004737760] [2022-07-13 19:52:40,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004737760] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:52:40,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:52:40,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:52:40,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393601787] [2022-07-13 19:52:40,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:52:40,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:52:40,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:52:40,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:52:40,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:52:40,073 INFO L87 Difference]: Start difference. First operand 3131 states and 5441 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:52:40,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:52:40,780 INFO L93 Difference]: Finished difference Result 5511 states and 8955 transitions. [2022-07-13 19:52:40,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 19:52:40,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2022-07-13 19:52:40,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:52:40,795 INFO L225 Difference]: With dead ends: 5511 [2022-07-13 19:52:40,795 INFO L226 Difference]: Without dead ends: 4511 [2022-07-13 19:52:40,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 19:52:40,799 INFO L413 NwaCegarLoop]: 4248 mSDtfsCounter, 4376 mSDsluCounter, 16502 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4388 SdHoareTripleChecker+Valid, 20750 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 19:52:40,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4388 Valid, 20750 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 19:52:40,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4511 states. [2022-07-13 19:52:40,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4511 to 3988. [2022-07-13 19:52:40,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3988 states, 3690 states have (on average 1.7002710027100272) internal successors, (6274), 3709 states have internal predecessors, (6274), 178 states have call successors, (178), 103 states have call predecessors, (178), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2022-07-13 19:52:40,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3988 states to 3988 states and 6725 transitions. [2022-07-13 19:52:40,890 INFO L78 Accepts]: Start accepts. Automaton has 3988 states and 6725 transitions. Word has length 69 [2022-07-13 19:52:40,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:52:40,890 INFO L495 AbstractCegarLoop]: Abstraction has 3988 states and 6725 transitions. [2022-07-13 19:52:40,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:52:40,891 INFO L276 IsEmpty]: Start isEmpty. Operand 3988 states and 6725 transitions. [2022-07-13 19:52:40,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-13 19:52:40,892 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:52:40,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:52:40,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 19:52:40,893 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:52:40,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:52:40,894 INFO L85 PathProgramCache]: Analyzing trace with hash -187719576, now seen corresponding path program 1 times [2022-07-13 19:52:40,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:52:40,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538094448] [2022-07-13 19:52:40,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:52:40,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:52:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:40,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:52:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:40,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:52:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:40,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:52:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:40,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:52:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:40,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:52:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:40,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:52:40,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:52:40,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538094448] [2022-07-13 19:52:40,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538094448] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:52:40,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:52:40,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 19:52:40,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219929404] [2022-07-13 19:52:40,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:52:40,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 19:52:40,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:52:40,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 19:52:40,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 19:52:40,964 INFO L87 Difference]: Start difference. First operand 3988 states and 6725 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:52:41,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:52:41,665 INFO L93 Difference]: Finished difference Result 7372 states and 11760 transitions. [2022-07-13 19:52:41,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 19:52:41,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2022-07-13 19:52:41,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:52:41,690 INFO L225 Difference]: With dead ends: 7372 [2022-07-13 19:52:41,690 INFO L226 Difference]: Without dead ends: 5516 [2022-07-13 19:52:41,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-13 19:52:41,697 INFO L413 NwaCegarLoop]: 4312 mSDtfsCounter, 4499 mSDsluCounter, 12269 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4524 SdHoareTripleChecker+Valid, 16581 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 19:52:41,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4524 Valid, 16581 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 19:52:41,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5516 states. [2022-07-13 19:52:41,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5516 to 4929. [2022-07-13 19:52:41,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4929 states, 4473 states have (on average 1.6492287055667338) internal successors, (7377), 4509 states have internal predecessors, (7377), 274 states have call successors, (274), 157 states have call predecessors, (274), 180 states have return successors, (397), 278 states have call predecessors, (397), 272 states have call successors, (397) [2022-07-13 19:52:41,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4929 states to 4929 states and 8048 transitions. [2022-07-13 19:52:41,839 INFO L78 Accepts]: Start accepts. Automaton has 4929 states and 8048 transitions. Word has length 69 [2022-07-13 19:52:41,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:52:41,839 INFO L495 AbstractCegarLoop]: Abstraction has 4929 states and 8048 transitions. [2022-07-13 19:52:41,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:52:41,840 INFO L276 IsEmpty]: Start isEmpty. Operand 4929 states and 8048 transitions. [2022-07-13 19:52:41,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-13 19:52:41,845 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:52:41,846 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2022-07-13 19:52:41,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 19:52:41,846 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:52:41,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:52:41,846 INFO L85 PathProgramCache]: Analyzing trace with hash 770021099, now seen corresponding path program 1 times [2022-07-13 19:52:41,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:52:41,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915957409] [2022-07-13 19:52:41,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:52:41,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:52:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:41,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:52:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:41,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:52:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:41,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:52:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:41,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:52:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:41,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:52:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:41,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 19:52:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:41,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:52:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:41,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 19:52:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 19:52:41,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:52:41,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915957409] [2022-07-13 19:52:41,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915957409] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:52:41,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266065979] [2022-07-13 19:52:41,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:52:41,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:52:41,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:52:41,943 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 19:52:41,979 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 19:52:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:42,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 19:52:42,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 19:52:42,089 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 19:52:42,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 19:52:42,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266065979] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:52:42,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 19:52:42,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 19:52:42,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458931768] [2022-07-13 19:52:42,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:52:42,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:52:42,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:52:42,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:52:42,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:52:42,092 INFO L87 Difference]: Start difference. First operand 4929 states and 8048 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 19:52:42,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:52:42,269 INFO L93 Difference]: Finished difference Result 10380 states and 16066 transitions. [2022-07-13 19:52:42,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:52:42,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 111 [2022-07-13 19:52:42,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:52:42,328 INFO L225 Difference]: With dead ends: 10380 [2022-07-13 19:52:42,329 INFO L226 Difference]: Without dead ends: 7583 [2022-07-13 19:52:42,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:52:42,340 INFO L413 NwaCegarLoop]: 4162 mSDtfsCounter, 4110 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4110 SdHoareTripleChecker+Valid, 4333 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:52:42,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4110 Valid, 4333 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:52:42,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7583 states. [2022-07-13 19:52:42,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7583 to 7527. [2022-07-13 19:52:42,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7527 states, 6657 states have (on average 1.5841970857743728) internal successors, (10546), 6726 states have internal predecessors, (10546), 512 states have call successors, (512), 309 states have call predecessors, (512), 356 states have return successors, (745), 507 states have call predecessors, (745), 510 states have call successors, (745) [2022-07-13 19:52:42,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7527 states to 7527 states and 11803 transitions. [2022-07-13 19:52:42,590 INFO L78 Accepts]: Start accepts. Automaton has 7527 states and 11803 transitions. Word has length 111 [2022-07-13 19:52:42,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:52:42,590 INFO L495 AbstractCegarLoop]: Abstraction has 7527 states and 11803 transitions. [2022-07-13 19:52:42,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 19:52:42,591 INFO L276 IsEmpty]: Start isEmpty. Operand 7527 states and 11803 transitions. [2022-07-13 19:52:42,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-13 19:52:42,598 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:52:42,598 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2022-07-13 19:52:42,623 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 19:52:42,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:52:42,815 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:52:42,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:52:42,816 INFO L85 PathProgramCache]: Analyzing trace with hash -122535733, now seen corresponding path program 1 times [2022-07-13 19:52:42,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:52:42,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878221642] [2022-07-13 19:52:42,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:52:42,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:52:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:42,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:52:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:42,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:52:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:42,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:52:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:42,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:52:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:42,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:52:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:42,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 19:52:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:42,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:52:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:42,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 19:52:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:42,901 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 19:52:42,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:52:42,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878221642] [2022-07-13 19:52:42,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878221642] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:52:42,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971804572] [2022-07-13 19:52:42,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:52:42,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:52:42,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:52:42,903 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 19:52:42,905 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 19:52:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:42,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 19:52:42,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 19:52:43,010 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-13 19:52:43,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 19:52:43,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971804572] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:52:43,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 19:52:43,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 19:52:43,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445873530] [2022-07-13 19:52:43,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:52:43,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:52:43,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:52:43,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:52:43,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:52:43,013 INFO L87 Difference]: Start difference. First operand 7527 states and 11803 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 19:52:43,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:52:43,324 INFO L93 Difference]: Finished difference Result 17935 states and 27159 transitions. [2022-07-13 19:52:43,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:52:43,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 111 [2022-07-13 19:52:43,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:52:43,365 INFO L225 Difference]: With dead ends: 17935 [2022-07-13 19:52:43,366 INFO L226 Difference]: Without dead ends: 12541 [2022-07-13 19:52:43,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:52:43,385 INFO L413 NwaCegarLoop]: 4311 mSDtfsCounter, 154 mSDsluCounter, 4150 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 8461 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:52:43,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 8461 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:52:43,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12541 states. [2022-07-13 19:52:43,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12541 to 12541. [2022-07-13 19:52:43,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12541 states, 10858 states have (on average 1.5209983422361393) internal successors, (16515), 10976 states have internal predecessors, (16515), 977 states have call successors, (977), 609 states have call predecessors, (977), 704 states have return successors, (1596), 987 states have call predecessors, (1596), 975 states have call successors, (1596) [2022-07-13 19:52:43,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12541 states to 12541 states and 19088 transitions. [2022-07-13 19:52:43,783 INFO L78 Accepts]: Start accepts. Automaton has 12541 states and 19088 transitions. Word has length 111 [2022-07-13 19:52:43,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:52:43,783 INFO L495 AbstractCegarLoop]: Abstraction has 12541 states and 19088 transitions. [2022-07-13 19:52:43,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 19:52:43,784 INFO L276 IsEmpty]: Start isEmpty. Operand 12541 states and 19088 transitions. [2022-07-13 19:52:43,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-13 19:52:43,805 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:52:43,805 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:43,827 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 19:52:44,019 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,SelfDestructingSolverStorable7 [2022-07-13 19:52:44,019 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:52:44,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:52:44,020 INFO L85 PathProgramCache]: Analyzing trace with hash 327119452, now seen corresponding path program 1 times [2022-07-13 19:52:44,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:52:44,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797956679] [2022-07-13 19:52:44,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:52:44,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:52:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:44,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:52:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:44,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:52:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:44,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:52:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:44,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:52:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:44,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:52:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:44,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 19:52:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:44,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:52:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:44,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 19:52:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:44,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:52:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:44,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 19:52:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:44,133 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-13 19:52:44,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:52:44,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797956679] [2022-07-13 19:52:44,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797956679] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:52:44,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991774041] [2022-07-13 19:52:44,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:52:44,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:52:44,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:52:44,135 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 19:52:44,167 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 19:52:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:44,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 19:52:44,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 19:52:44,344 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-13 19:52:44,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 19:52:44,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991774041] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:52:44,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 19:52:44,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 19:52:44,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290577671] [2022-07-13 19:52:44,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:52:44,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:52:44,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:52:44,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:52:44,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:52:44,346 INFO L87 Difference]: Start difference. First operand 12541 states and 19088 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 19:52:44,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:52:44,754 INFO L93 Difference]: Finished difference Result 32917 states and 49009 transitions. [2022-07-13 19:52:44,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:52:44,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 143 [2022-07-13 19:52:44,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:52:44,827 INFO L225 Difference]: With dead ends: 32917 [2022-07-13 19:52:44,827 INFO L226 Difference]: Without dead ends: 22513 [2022-07-13 19:52:44,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:52:44,865 INFO L413 NwaCegarLoop]: 4183 mSDtfsCounter, 4068 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4068 SdHoareTripleChecker+Valid, 4354 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:52:44,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4068 Valid, 4354 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:52:44,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22513 states. [2022-07-13 19:52:45,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22513 to 22301. [2022-07-13 19:52:45,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22301 states, 19038 states have (on average 1.4810904506775922) internal successors, (28197), 19270 states have internal predecessors, (28197), 1871 states have call successors, (1871), 1199 states have call predecessors, (1871), 1390 states have return successors, (3038), 1863 states have call predecessors, (3038), 1869 states have call successors, (3038) [2022-07-13 19:52:45,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22301 states to 22301 states and 33106 transitions. [2022-07-13 19:52:45,480 INFO L78 Accepts]: Start accepts. Automaton has 22301 states and 33106 transitions. Word has length 143 [2022-07-13 19:52:45,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:52:45,480 INFO L495 AbstractCegarLoop]: Abstraction has 22301 states and 33106 transitions. [2022-07-13 19:52:45,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 19:52:45,480 INFO L276 IsEmpty]: Start isEmpty. Operand 22301 states and 33106 transitions. [2022-07-13 19:52:45,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-13 19:52:45,582 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:52:45,582 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:45,601 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 19:52:45,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:52:45,783 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:52:45,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:52:45,784 INFO L85 PathProgramCache]: Analyzing trace with hash 382011958, now seen corresponding path program 1 times [2022-07-13 19:52:45,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:52:45,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668811629] [2022-07-13 19:52:45,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:52:45,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:52:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:45,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:52:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:45,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:52:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:45,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:52:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:45,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:52:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:45,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:52:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:45,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 19:52:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:45,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 19:52:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:45,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:52:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:45,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 19:52:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:45,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:52:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:45,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-13 19:52:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:45,859 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-13 19:52:45,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:52:45,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668811629] [2022-07-13 19:52:45,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668811629] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:52:45,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273700444] [2022-07-13 19:52:45,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:52:45,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:52:45,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:52:45,861 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 19:52:45,862 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 19:52:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:45,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 19:52:45,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 19:52:46,019 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 19:52:46,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 19:52:46,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273700444] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:52:46,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 19:52:46,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 19:52:46,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962710343] [2022-07-13 19:52:46,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:52:46,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:52:46,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:52:46,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:52:46,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:52:46,021 INFO L87 Difference]: Start difference. First operand 22301 states and 33106 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 19:52:46,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:52:46,566 INFO L93 Difference]: Finished difference Result 44821 states and 66508 transitions. [2022-07-13 19:52:46,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:52:46,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 160 [2022-07-13 19:52:46,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:52:46,653 INFO L225 Difference]: With dead ends: 44821 [2022-07-13 19:52:46,653 INFO L226 Difference]: Without dead ends: 24655 [2022-07-13 19:52:46,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:52:46,707 INFO L413 NwaCegarLoop]: 4149 mSDtfsCounter, 4087 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4087 SdHoareTripleChecker+Valid, 4183 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:52:46,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4087 Valid, 4183 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:52:46,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24655 states. [2022-07-13 19:52:47,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24655 to 24655. [2022-07-13 19:52:47,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24655 states, 21180 states have (on average 1.4241265344664777) internal successors, (30163), 21412 states have internal predecessors, (30163), 1925 states have call successors, (1925), 1357 states have call predecessors, (1925), 1548 states have return successors, (3106), 1917 states have call predecessors, (3106), 1923 states have call successors, (3106) [2022-07-13 19:52:47,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24655 states to 24655 states and 35194 transitions. [2022-07-13 19:52:47,551 INFO L78 Accepts]: Start accepts. Automaton has 24655 states and 35194 transitions. Word has length 160 [2022-07-13 19:52:47,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:52:47,551 INFO L495 AbstractCegarLoop]: Abstraction has 24655 states and 35194 transitions. [2022-07-13 19:52:47,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 19:52:47,552 INFO L276 IsEmpty]: Start isEmpty. Operand 24655 states and 35194 transitions. [2022-07-13 19:52:47,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-13 19:52:47,596 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:52:47,597 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:47,616 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 19:52:47,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:52:47,817 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:52:47,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:52:47,818 INFO L85 PathProgramCache]: Analyzing trace with hash 228383827, now seen corresponding path program 1 times [2022-07-13 19:52:47,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:52:47,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669590966] [2022-07-13 19:52:47,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:52:47,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:52:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:47,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:52:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:47,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:52:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:47,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:52:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:47,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:52:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:47,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:52:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:47,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 19:52:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:47,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 19:52:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:47,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:52:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:47,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 19:52:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:47,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:52:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:47,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-13 19:52:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:47,901 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-13 19:52:47,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:52:47,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669590966] [2022-07-13 19:52:47,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669590966] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:52:47,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47366785] [2022-07-13 19:52:47,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:52:47,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:52:47,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:52:47,903 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 19:52:47,905 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 19:52:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:47,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 19:52:47,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 19:52:48,029 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-13 19:52:48,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 19:52:48,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47366785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:52:48,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 19:52:48,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 19:52:48,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144855105] [2022-07-13 19:52:48,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:52:48,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:52:48,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:52:48,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:52:48,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:52:48,033 INFO L87 Difference]: Start difference. First operand 24655 states and 35194 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 19:52:48,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:52:48,764 INFO L93 Difference]: Finished difference Result 41688 states and 58732 transitions. [2022-07-13 19:52:48,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:52:48,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2022-07-13 19:52:48,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:52:48,843 INFO L225 Difference]: With dead ends: 41688 [2022-07-13 19:52:48,843 INFO L226 Difference]: Without dead ends: 26195 [2022-07-13 19:52:48,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:52:48,879 INFO L413 NwaCegarLoop]: 4171 mSDtfsCounter, 4088 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4088 SdHoareTripleChecker+Valid, 4349 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:52:48,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4088 Valid, 4349 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:52:48,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26195 states. [2022-07-13 19:52:49,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26195 to 26055. [2022-07-13 19:52:49,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26055 states, 22468 states have (on average 1.3989229125867901) internal successors, (31431), 22700 states have internal predecessors, (31431), 1945 states have call successors, (1945), 1449 states have call predecessors, (1945), 1640 states have return successors, (3218), 1937 states have call predecessors, (3218), 1943 states have call successors, (3218) [2022-07-13 19:52:49,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26055 states to 26055 states and 36594 transitions. [2022-07-13 19:52:49,791 INFO L78 Accepts]: Start accepts. Automaton has 26055 states and 36594 transitions. Word has length 160 [2022-07-13 19:52:49,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:52:49,792 INFO L495 AbstractCegarLoop]: Abstraction has 26055 states and 36594 transitions. [2022-07-13 19:52:49,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 19:52:49,792 INFO L276 IsEmpty]: Start isEmpty. Operand 26055 states and 36594 transitions. [2022-07-13 19:52:49,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-13 19:52:49,841 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:52:49,841 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:49,869 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 19:52:50,067 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,SelfDestructingSolverStorable10 [2022-07-13 19:52:50,067 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:52:50,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:52:50,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1570525413, now seen corresponding path program 1 times [2022-07-13 19:52:50,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:52:50,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159592769] [2022-07-13 19:52:50,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:52:50,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:52:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:50,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:52:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:50,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:52:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:50,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:52:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:50,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:52:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:50,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:52:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:50,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 19:52:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:50,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:52:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:50,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 19:52:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:50,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 19:52:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:50,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:52:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:50,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 19:52:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:50,174 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-13 19:52:50,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:52:50,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159592769] [2022-07-13 19:52:50,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159592769] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:52:50,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376077307] [2022-07-13 19:52:50,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:52:50,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:52:50,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:52:50,176 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 19:52:50,178 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 19:52:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:50,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 19:52:50,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 19:52:50,297 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-13 19:52:50,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 19:52:50,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376077307] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:52:50,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 19:52:50,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 19:52:50,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008500384] [2022-07-13 19:52:50,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:52:50,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:52:50,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:52:50,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:52:50,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:52:50,301 INFO L87 Difference]: Start difference. First operand 26055 states and 36594 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 19:52:51,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:52:51,474 INFO L93 Difference]: Finished difference Result 72665 states and 101108 transitions. [2022-07-13 19:52:51,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:52:51,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 161 [2022-07-13 19:52:51,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:52:51,621 INFO L225 Difference]: With dead ends: 72665 [2022-07-13 19:52:51,621 INFO L226 Difference]: Without dead ends: 48749 [2022-07-13 19:52:51,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:52:51,685 INFO L413 NwaCegarLoop]: 4320 mSDtfsCounter, 163 mSDsluCounter, 4147 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 8467 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:52:51,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 8467 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:52:51,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48749 states. [2022-07-13 19:52:53,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48749 to 48705. [2022-07-13 19:52:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48705 states, 41704 states have (on average 1.3657442931133703) internal successors, (56957), 42166 states have internal predecessors, (56957), 3775 states have call successors, (3775), 2841 states have call predecessors, (3775), 3224 states have return successors, (7134), 3761 states have call predecessors, (7134), 3773 states have call successors, (7134) [2022-07-13 19:52:53,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48705 states to 48705 states and 67866 transitions. [2022-07-13 19:52:53,689 INFO L78 Accepts]: Start accepts. Automaton has 48705 states and 67866 transitions. Word has length 161 [2022-07-13 19:52:53,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:52:53,689 INFO L495 AbstractCegarLoop]: Abstraction has 48705 states and 67866 transitions. [2022-07-13 19:52:53,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 19:52:53,690 INFO L276 IsEmpty]: Start isEmpty. Operand 48705 states and 67866 transitions. [2022-07-13 19:52:53,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-13 19:52:53,775 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:52:53,775 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:53,800 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 19:52:53,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:52:53,991 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:52:53,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:52:53,992 INFO L85 PathProgramCache]: Analyzing trace with hash -948353227, now seen corresponding path program 1 times [2022-07-13 19:52:53,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:52:53,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891300525] [2022-07-13 19:52:53,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:52:53,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:52:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:54,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:52:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:54,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:52:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:54,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:52:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:54,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:52:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:54,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:52:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:54,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 19:52:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:54,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:52:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:54,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 19:52:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:54,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 19:52:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:54,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:52:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:54,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 19:52:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:54,087 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-13 19:52:54,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:52:54,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891300525] [2022-07-13 19:52:54,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891300525] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:52:54,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208029045] [2022-07-13 19:52:54,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:52:54,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:52:54,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:52:54,090 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 19:52:54,091 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 19:52:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:54,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 19:52:54,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 19:52:54,274 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 19:52:54,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 19:52:54,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208029045] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:52:54,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 19:52:54,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 19:52:54,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192056027] [2022-07-13 19:52:54,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:52:54,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:52:54,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:52:54,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:52:54,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:52:54,277 INFO L87 Difference]: Start difference. First operand 48705 states and 67866 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 19:52:55,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:52:55,713 INFO L93 Difference]: Finished difference Result 79069 states and 111521 transitions. [2022-07-13 19:52:55,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:52:55,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 161 [2022-07-13 19:52:55,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:52:55,836 INFO L225 Difference]: With dead ends: 79069 [2022-07-13 19:52:55,836 INFO L226 Difference]: Without dead ends: 41521 [2022-07-13 19:52:55,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:52:55,917 INFO L413 NwaCegarLoop]: 4148 mSDtfsCounter, 4082 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4082 SdHoareTripleChecker+Valid, 4181 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:52:55,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4082 Valid, 4181 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:52:55,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41521 states. [2022-07-13 19:52:57,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41521 to 30305. [2022-07-13 19:52:57,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30305 states, 26128 states have (on average 1.3429654011022658) internal successors, (35089), 26370 states have internal predecessors, (35089), 2255 states have call successors, (2255), 1729 states have call predecessors, (2255), 1920 states have return successors, (3778), 2237 states have call predecessors, (3778), 2253 states have call successors, (3778) [2022-07-13 19:52:57,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30305 states to 30305 states and 41122 transitions. [2022-07-13 19:52:57,370 INFO L78 Accepts]: Start accepts. Automaton has 30305 states and 41122 transitions. Word has length 161 [2022-07-13 19:52:57,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:52:57,371 INFO L495 AbstractCegarLoop]: Abstraction has 30305 states and 41122 transitions. [2022-07-13 19:52:57,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 19:52:57,371 INFO L276 IsEmpty]: Start isEmpty. Operand 30305 states and 41122 transitions. [2022-07-13 19:52:57,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-13 19:52:57,412 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:52:57,412 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:57,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-13 19:52:57,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:52:57,627 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:52:57,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:52:57,628 INFO L85 PathProgramCache]: Analyzing trace with hash -192882952, now seen corresponding path program 1 times [2022-07-13 19:52:57,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:52:57,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538443296] [2022-07-13 19:52:57,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:52:57,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:52:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:57,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:52:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:57,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:52:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:57,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:52:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:57,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:52:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:57,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:52:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:57,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 19:52:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:57,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:52:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:57,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 19:52:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:57,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 19:52:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:57,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:52:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:57,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 19:52:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:57,734 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-13 19:52:57,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:52:57,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538443296] [2022-07-13 19:52:57,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538443296] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:52:57,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290241030] [2022-07-13 19:52:57,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:52:57,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:52:57,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:52:57,736 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 19:52:57,737 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 19:52:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:52:57,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 19:52:57,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 19:52:57,838 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-13 19:52:57,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 19:52:57,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290241030] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:52:57,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 19:52:57,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 19:52:57,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549844711] [2022-07-13 19:52:57,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:52:57,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:52:57,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:52:57,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:52:57,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:52:57,840 INFO L87 Difference]: Start difference. First operand 30305 states and 41122 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 19:52:59,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:52:59,670 INFO L93 Difference]: Finished difference Result 82213 states and 110894 transitions. [2022-07-13 19:52:59,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:52:59,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 161 [2022-07-13 19:52:59,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:52:59,849 INFO L225 Difference]: With dead ends: 82213 [2022-07-13 19:52:59,849 INFO L226 Difference]: Without dead ends: 54057 [2022-07-13 19:52:59,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:52:59,904 INFO L413 NwaCegarLoop]: 4314 mSDtfsCounter, 150 mSDsluCounter, 4144 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 8458 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:52:59,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 8458 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:52:59,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54057 states. [2022-07-13 19:53:01,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54057 to 54053. [2022-07-13 19:53:01,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54053 states, 46184 states have (on average 1.3125974363415902) internal successors, (60621), 46666 states have internal predecessors, (60621), 4267 states have call successors, (4267), 3217 states have call predecessors, (4267), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2022-07-13 19:53:02,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54053 states to 54053 states and 73088 transitions. [2022-07-13 19:53:02,234 INFO L78 Accepts]: Start accepts. Automaton has 54053 states and 73088 transitions. Word has length 161 [2022-07-13 19:53:02,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:53:02,234 INFO L495 AbstractCegarLoop]: Abstraction has 54053 states and 73088 transitions. [2022-07-13 19:53:02,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 19:53:02,234 INFO L276 IsEmpty]: Start isEmpty. Operand 54053 states and 73088 transitions. [2022-07-13 19:53:02,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-13 19:53:02,288 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:53:02,288 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:53:02,307 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 19:53:02,506 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,SelfDestructingSolverStorable13 [2022-07-13 19:53:02,507 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:53:02,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:53:02,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1491732838, now seen corresponding path program 1 times [2022-07-13 19:53:02,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:53:02,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617876122] [2022-07-13 19:53:02,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:02,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:53:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:02,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:53:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:02,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:53:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:02,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:53:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:02,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:53:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:02,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:53:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:02,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 19:53:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:02,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 19:53:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:02,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:53:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:02,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 19:53:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:02,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:53:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:02,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 19:53:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:02,603 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-13 19:53:02,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:53:02,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617876122] [2022-07-13 19:53:02,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617876122] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:53:02,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170463768] [2022-07-13 19:53:02,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:02,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:53:02,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:53:02,605 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 19:53:02,606 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 19:53:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:02,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 19:53:02,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 19:53:02,724 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-13 19:53:02,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 19:53:02,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170463768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:53:02,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 19:53:02,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 19:53:02,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065393865] [2022-07-13 19:53:02,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:53:02,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:53:02,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:53:02,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:53:02,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:53:02,727 INFO L87 Difference]: Start difference. First operand 54053 states and 73088 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 19:53:04,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:53:04,651 INFO L93 Difference]: Finished difference Result 95015 states and 127828 transitions. [2022-07-13 19:53:04,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:53:04,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 161 [2022-07-13 19:53:04,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:53:04,931 INFO L225 Difference]: With dead ends: 95015 [2022-07-13 19:53:04,931 INFO L226 Difference]: Without dead ends: 54897 [2022-07-13 19:53:04,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:53:04,984 INFO L413 NwaCegarLoop]: 4186 mSDtfsCounter, 4108 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4108 SdHoareTripleChecker+Valid, 4357 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:53:04,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4108 Valid, 4357 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:53:05,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54897 states. [2022-07-13 19:53:06,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54897 to 54053. [2022-07-13 19:53:06,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54053 states, 46184 states have (on average 1.3048025290143772) internal successors, (60261), 46666 states have internal predecessors, (60261), 4267 states have call successors, (4267), 3217 states have call predecessors, (4267), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2022-07-13 19:53:07,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54053 states to 54053 states and 72728 transitions. [2022-07-13 19:53:07,058 INFO L78 Accepts]: Start accepts. Automaton has 54053 states and 72728 transitions. Word has length 161 [2022-07-13 19:53:07,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:53:07,058 INFO L495 AbstractCegarLoop]: Abstraction has 54053 states and 72728 transitions. [2022-07-13 19:53:07,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 19:53:07,059 INFO L276 IsEmpty]: Start isEmpty. Operand 54053 states and 72728 transitions. [2022-07-13 19:53:07,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-13 19:53:07,114 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:53:07,114 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:53:07,134 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 19:53:07,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-13 19:53:07,324 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:53:07,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:53:07,325 INFO L85 PathProgramCache]: Analyzing trace with hash -251057197, now seen corresponding path program 1 times [2022-07-13 19:53:07,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:53:07,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259261786] [2022-07-13 19:53:07,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:07,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:53:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:07,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:53:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:07,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:53:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:07,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:53:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:07,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:53:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:07,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:53:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:07,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 19:53:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:07,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 19:53:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:07,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:53:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:07,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 19:53:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:07,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:53:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:07,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 19:53:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:07,602 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-13 19:53:07,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:53:07,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259261786] [2022-07-13 19:53:07,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259261786] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:53:07,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812598670] [2022-07-13 19:53:07,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:07,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:53:07,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:53:07,604 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 19:53:07,606 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 19:53:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:07,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 19:53:07,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 19:53:07,727 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-13 19:53:07,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 19:53:07,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812598670] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:53:07,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 19:53:07,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 19:53:07,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305253375] [2022-07-13 19:53:07,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:53:07,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:53:07,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:53:07,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:53:07,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:53:07,729 INFO L87 Difference]: Start difference. First operand 54053 states and 72728 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 19:53:09,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:53:09,835 INFO L93 Difference]: Finished difference Result 94725 states and 126938 transitions. [2022-07-13 19:53:09,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:53:09,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 161 [2022-07-13 19:53:09,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:53:10,019 INFO L225 Difference]: With dead ends: 94725 [2022-07-13 19:53:10,020 INFO L226 Difference]: Without dead ends: 55449 [2022-07-13 19:53:10,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:53:10,100 INFO L413 NwaCegarLoop]: 4200 mSDtfsCounter, 4107 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4107 SdHoareTripleChecker+Valid, 4373 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:53:10,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4107 Valid, 4373 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:53:10,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55449 states. [2022-07-13 19:53:12,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55449 to 53933. [2022-07-13 19:53:12,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53933 states, 46064 states have (on average 1.2977813476901703) internal successors, (59781), 46546 states have internal predecessors, (59781), 4267 states have call successors, (4267), 3217 states have call predecessors, (4267), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2022-07-13 19:53:12,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53933 states to 53933 states and 72248 transitions. [2022-07-13 19:53:12,319 INFO L78 Accepts]: Start accepts. Automaton has 53933 states and 72248 transitions. Word has length 161 [2022-07-13 19:53:12,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:53:12,320 INFO L495 AbstractCegarLoop]: Abstraction has 53933 states and 72248 transitions. [2022-07-13 19:53:12,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 19:53:12,320 INFO L276 IsEmpty]: Start isEmpty. Operand 53933 states and 72248 transitions. [2022-07-13 19:53:12,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-13 19:53:12,371 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:53:12,371 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:53:12,388 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 19:53:12,572 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,SelfDestructingSolverStorable15 [2022-07-13 19:53:12,572 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:53:12,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:53:12,573 INFO L85 PathProgramCache]: Analyzing trace with hash -2084105626, now seen corresponding path program 1 times [2022-07-13 19:53:12,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:53:12,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879905665] [2022-07-13 19:53:12,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:12,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:53:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:12,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:53:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:12,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:53:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:12,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:53:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:12,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:53:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:12,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:53:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:12,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 19:53:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:12,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 19:53:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:12,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:53:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:12,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 19:53:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:12,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:53:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:12,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 19:53:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:12,619 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-07-13 19:53:12,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:53:12,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879905665] [2022-07-13 19:53:12,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879905665] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:53:12,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:53:12,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 19:53:12,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966075798] [2022-07-13 19:53:12,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:53:12,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 19:53:12,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:53:12,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 19:53:12,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 19:53:12,621 INFO L87 Difference]: Start difference. First operand 53933 states and 72248 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 19:53:14,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:53:14,794 INFO L93 Difference]: Finished difference Result 103313 states and 136251 transitions. [2022-07-13 19:53:14,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 19:53:14,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 161 [2022-07-13 19:53:14,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:53:14,943 INFO L225 Difference]: With dead ends: 103313 [2022-07-13 19:53:14,943 INFO L226 Difference]: Without dead ends: 51525 [2022-07-13 19:53:15,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 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 19:53:15,019 INFO L413 NwaCegarLoop]: 4148 mSDtfsCounter, 296 mSDsluCounter, 12019 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 16167 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 19:53:15,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 16167 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 19:53:15,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51525 states. [2022-07-13 19:53:17,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51525 to 48807. [2022-07-13 19:53:17,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48807 states, 42022 states have (on average 1.3009138070534483) internal successors, (54667), 42916 states have internal predecessors, (54667), 3255 states have call successors, (3255), 2473 states have call predecessors, (3255), 3528 states have return successors, (6773), 3449 states have call predecessors, (6773), 3253 states have call successors, (6773) [2022-07-13 19:53:17,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48807 states to 48807 states and 64695 transitions. [2022-07-13 19:53:17,330 INFO L78 Accepts]: Start accepts. Automaton has 48807 states and 64695 transitions. Word has length 161 [2022-07-13 19:53:17,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:53:17,331 INFO L495 AbstractCegarLoop]: Abstraction has 48807 states and 64695 transitions. [2022-07-13 19:53:17,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 19:53:17,331 INFO L276 IsEmpty]: Start isEmpty. Operand 48807 states and 64695 transitions. [2022-07-13 19:53:17,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-13 19:53:17,368 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:53:17,368 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:53:17,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 19:53:17,368 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:53:17,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:53:17,368 INFO L85 PathProgramCache]: Analyzing trace with hash 641108433, now seen corresponding path program 1 times [2022-07-13 19:53:17,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:53:17,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344231222] [2022-07-13 19:53:17,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:17,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:53:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:17,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:53:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:17,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 19:53:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:17,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:53:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:17,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 19:53:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:17,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 19:53:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:17,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 19:53:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:17,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 19:53:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:17,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:53:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:17,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 19:53:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:17,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 19:53:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:17,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 19:53:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:17,416 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-13 19:53:17,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:53:17,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344231222] [2022-07-13 19:53:17,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344231222] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:53:17,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:53:17,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 19:53:17,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734642388] [2022-07-13 19:53:17,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:53:17,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 19:53:17,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:53:17,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 19:53:17,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 19:53:17,418 INFO L87 Difference]: Start difference. First operand 48807 states and 64695 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 19:53:19,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:53:19,279 INFO L93 Difference]: Finished difference Result 86589 states and 113654 transitions. [2022-07-13 19:53:19,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 19:53:19,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 161 [2022-07-13 19:53:19,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:53:19,380 INFO L225 Difference]: With dead ends: 86589 [2022-07-13 19:53:19,381 INFO L226 Difference]: Without dead ends: 39919 [2022-07-13 19:53:19,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 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 19:53:19,444 INFO L413 NwaCegarLoop]: 4147 mSDtfsCounter, 296 mSDsluCounter, 12018 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 16165 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 19:53:19,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 16165 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]