./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.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.07.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 5738c99ca39a13f327ff059e5a6f3b47670e1701984219677e7b62ff58bbdc65 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 19:53:20,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 19:53:20,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 19:53:20,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 19:53:20,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 19:53:20,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 19:53:20,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 19:53:20,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 19:53:20,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 19:53:20,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 19:53:20,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 19:53:20,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 19:53:20,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 19:53:20,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 19:53:20,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 19:53:20,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 19:53:20,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 19:53:20,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 19:53:20,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 19:53:20,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 19:53:20,741 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 19:53:20,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 19:53:20,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 19:53:20,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 19:53:20,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 19:53:20,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 19:53:20,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 19:53:20,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 19:53:20,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 19:53:20,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 19:53:20,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 19:53:20,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 19:53:20,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 19:53:20,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 19:53:20,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 19:53:20,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 19:53:20,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 19:53:20,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 19:53:20,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 19:53:20,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 19:53:20,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 19:53:20,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 19:53:20,758 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 19:53:20,781 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 19:53:20,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 19:53:20,782 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 19:53:20,782 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 19:53:20,782 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 19:53:20,782 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 19:53:20,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 19:53:20,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 19:53:20,783 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 19:53:20,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 19:53:20,784 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 19:53:20,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 19:53:20,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 19:53:20,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 19:53:20,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 19:53:20,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 19:53:20,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 19:53:20,785 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 19:53:20,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 19:53:20,786 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 19:53:20,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 19:53:20,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 19:53:20,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 19:53:20,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 19:53:20,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:53:20,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 19:53:20,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 19:53:20,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 19:53:20,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 19:53:20,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 19:53:20,788 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 19:53:20,788 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 19:53:20,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 19:53:20,788 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5738c99ca39a13f327ff059e5a6f3b47670e1701984219677e7b62ff58bbdc65 [2022-07-13 19:53:21,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 19:53:21,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 19:53:21,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 19:53:21,089 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 19:53:21,090 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 19:53:21,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c [2022-07-13 19:53:21,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c51c90cb5/e47c24f572da4720b1a3dc8c1c905d48/FLAGccf99da92 [2022-07-13 19:53:21,869 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 19:53:21,870 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c [2022-07-13 19:53:21,911 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c51c90cb5/e47c24f572da4720b1a3dc8c1c905d48/FLAGccf99da92 [2022-07-13 19:53:22,399 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c51c90cb5/e47c24f572da4720b1a3dc8c1c905d48 [2022-07-13 19:53:22,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 19:53:22,402 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 19:53:22,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 19:53:22,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 19:53:22,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 19:53:22,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:53:22" (1/1) ... [2022-07-13 19:53:22,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f5f147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:22, skipping insertion in model container [2022-07-13 19:53:22,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:53:22" (1/1) ... [2022-07-13 19:53:22,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 19:53:22,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 19:53:23,785 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.07.cil-2.c[378560,378573] [2022-07-13 19:53:23,811 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.07.cil-2.c[383339,383352] [2022-07-13 19:53:23,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:53:23,976 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 19:53:24,522 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.07.cil-2.c[378560,378573] [2022-07-13 19:53:24,526 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.07.cil-2.c[383339,383352] [2022-07-13 19:53:24,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:53:24,585 INFO L208 MainTranslator]: Completed translation [2022-07-13 19:53:24,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:24 WrapperNode [2022-07-13 19:53:24,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 19:53:24,586 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 19:53:24,586 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 19:53:24,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 19:53:24,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:24" (1/1) ... [2022-07-13 19:53:24,744 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:24" (1/1) ... [2022-07-13 19:53:24,997 INFO L137 Inliner]: procedures = 58, calls = 63, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 12914 [2022-07-13 19:53:24,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 19:53:24,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 19:53:24,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 19:53:24,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 19:53:25,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:24" (1/1) ... [2022-07-13 19:53:25,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:24" (1/1) ... [2022-07-13 19:53:25,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:24" (1/1) ... [2022-07-13 19:53:25,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:24" (1/1) ... [2022-07-13 19:53:25,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:24" (1/1) ... [2022-07-13 19:53:25,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:24" (1/1) ... [2022-07-13 19:53:25,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:24" (1/1) ... [2022-07-13 19:53:25,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 19:53:25,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 19:53:25,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 19:53:25,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 19:53:25,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:24" (1/1) ... [2022-07-13 19:53:25,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:53:25,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:53:25,495 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 19:53:25,528 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 19:53:25,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 19:53:25,540 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-13 19:53:25,540 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-13 19:53:25,541 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 19:53:25,541 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 19:53:25,541 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-13 19:53:25,541 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-13 19:53:25,541 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-13 19:53:25,541 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-13 19:53:25,541 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-13 19:53:25,541 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-13 19:53:25,542 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-13 19:53:25,542 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-13 19:53:25,542 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-13 19:53:25,542 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-13 19:53:25,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 19:53:25,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 19:53:25,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 19:53:25,672 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 19:53:25,673 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 19:53:30,661 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 19:53:30,685 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 19:53:30,685 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-07-13 19:53:30,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:53:30 BoogieIcfgContainer [2022-07-13 19:53:30,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 19:53:30,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 19:53:30,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 19:53:30,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 19:53:30,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 07:53:22" (1/3) ... [2022-07-13 19:53:30,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c9f05a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:53:30, skipping insertion in model container [2022-07-13 19:53:30,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:24" (2/3) ... [2022-07-13 19:53:30,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c9f05a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:53:30, skipping insertion in model container [2022-07-13 19:53:30,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:53:30" (3/3) ... [2022-07-13 19:53:30,696 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.07.cil-2.c [2022-07-13 19:53:30,705 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 19:53:30,706 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 19:53:30,773 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 19:53:30,780 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@71bb223f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@570a7ddf [2022-07-13 19:53:30,780 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 19:53:30,791 INFO L276 IsEmpty]: Start isEmpty. Operand has 2448 states, 2415 states have (on average 1.850103519668737) internal successors, (4468), 2420 states have internal predecessors, (4468), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-13 19:53:30,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 19:53:30,805 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:53:30,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:53:30,806 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:53:30,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:53:30,811 INFO L85 PathProgramCache]: Analyzing trace with hash -818812197, now seen corresponding path program 1 times [2022-07-13 19:53:30,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:53:30,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109179015] [2022-07-13 19:53:30,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:30,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:53:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:31,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:53:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:31,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 19:53:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:31,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 19:53:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:31,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 19:53:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:31,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 19:53:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:31,193 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 19:53:31,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:53:31,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109179015] [2022-07-13 19:53:31,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109179015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:53:31,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:53:31,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 19:53:31,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759536105] [2022-07-13 19:53:31,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:53:31,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 19:53:31,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:53:31,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 19:53:31,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 19:53:31,227 INFO L87 Difference]: Start difference. First operand has 2448 states, 2415 states have (on average 1.850103519668737) internal successors, (4468), 2420 states have internal predecessors, (4468), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:53:32,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:53:32,067 INFO L93 Difference]: Finished difference Result 4970 states and 9155 transitions. [2022-07-13 19:53:32,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 19:53:32,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-07-13 19:53:32,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:53:32,101 INFO L225 Difference]: With dead ends: 4970 [2022-07-13 19:53:32,101 INFO L226 Difference]: Without dead ends: 2467 [2022-07-13 19:53:32,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:53:32,110 INFO L413 NwaCegarLoop]: 4465 mSDtfsCounter, 667 mSDsluCounter, 12353 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 16818 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 19:53:32,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 16818 Invalid, 512 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 19:53:32,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2022-07-13 19:53:32,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 2380. [2022-07-13 19:53:32,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 2349 states have (on average 1.8369518944231589) internal successors, (4315), 2352 states have internal predecessors, (4315), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-07-13 19:53:32,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 4359 transitions. [2022-07-13 19:53:32,219 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 4359 transitions. Word has length 124 [2022-07-13 19:53:32,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:53:32,220 INFO L495 AbstractCegarLoop]: Abstraction has 2380 states and 4359 transitions. [2022-07-13 19:53:32,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:53:32,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 4359 transitions. [2022-07-13 19:53:32,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 19:53:32,222 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:53:32,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:53:32,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 19:53:32,223 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:53:32,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:53:32,224 INFO L85 PathProgramCache]: Analyzing trace with hash 219772377, now seen corresponding path program 1 times [2022-07-13 19:53:32,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:53:32,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940897977] [2022-07-13 19:53:32,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:32,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:53:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:32,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:53:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:32,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 19:53:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:32,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 19:53:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:32,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 19:53:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:32,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 19:53:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:32,335 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 19:53:32,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:53:32,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940897977] [2022-07-13 19:53:32,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940897977] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:53:32,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:53:32,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 19:53:32,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499260244] [2022-07-13 19:53:32,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:53:32,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 19:53:32,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:53:32,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 19:53:32,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 19:53:32,339 INFO L87 Difference]: Start difference. First operand 2380 states and 4359 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 19:53:33,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:53:33,896 INFO L93 Difference]: Finished difference Result 3050 states and 5430 transitions. [2022-07-13 19:53:33,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 19:53:33,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 124 [2022-07-13 19:53:33,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:53:33,906 INFO L225 Difference]: With dead ends: 3050 [2022-07-13 19:53:33,906 INFO L226 Difference]: Without dead ends: 2806 [2022-07-13 19:53:33,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 19:53:33,909 INFO L413 NwaCegarLoop]: 4428 mSDtfsCounter, 4951 mSDsluCounter, 12541 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4965 SdHoareTripleChecker+Valid, 16969 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 19:53:33,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4965 Valid, 16969 Invalid, 1393 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 19:53:33,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2022-07-13 19:53:33,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2631. [2022-07-13 19:53:33,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 2577 states have (on average 1.8145129996119518) internal successors, (4676), 2581 states have internal predecessors, (4676), 39 states have call successors, (39), 13 states have call predecessors, (39), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2022-07-13 19:53:33,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 4755 transitions. [2022-07-13 19:53:33,986 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 4755 transitions. Word has length 124 [2022-07-13 19:53:33,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:53:33,988 INFO L495 AbstractCegarLoop]: Abstraction has 2631 states and 4755 transitions. [2022-07-13 19:53:33,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 19:53:33,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 4755 transitions. [2022-07-13 19:53:33,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 19:53:33,992 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:53:33,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:53:33,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 19:53:33,993 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:53:33,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:53:33,993 INFO L85 PathProgramCache]: Analyzing trace with hash -797876011, now seen corresponding path program 1 times [2022-07-13 19:53:33,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:53:33,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132939208] [2022-07-13 19:53:33,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:33,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:53:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:34,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:53:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:34,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 19:53:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:34,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 19:53:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:34,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 19:53:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:34,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 19:53:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:34,116 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 19:53:34,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:53:34,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132939208] [2022-07-13 19:53:34,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132939208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:53:34,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:53:34,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:53:34,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576245484] [2022-07-13 19:53:34,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:53:34,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:53:34,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:53:34,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:53:34,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:53:34,118 INFO L87 Difference]: Start difference. First operand 2631 states and 4755 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:53:36,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:53:36,215 INFO L93 Difference]: Finished difference Result 3648 states and 6379 transitions. [2022-07-13 19:53:36,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:53:36,216 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-13 19:53:36,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:53:36,226 INFO L225 Difference]: With dead ends: 3648 [2022-07-13 19:53:36,227 INFO L226 Difference]: Without dead ends: 3153 [2022-07-13 19:53:36,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:53:36,236 INFO L413 NwaCegarLoop]: 4631 mSDtfsCounter, 4958 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4972 SdHoareTripleChecker+Valid, 21778 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 19:53:36,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4972 Valid, 21778 Invalid, 2079 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 19:53:36,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2022-07-13 19:53:36,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 2865. [2022-07-13 19:53:36,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2865 states, 2788 states have (on average 1.7944763271162123) internal successors, (5003), 2793 states have internal predecessors, (5003), 55 states have call successors, (55), 19 states have call predecessors, (55), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2022-07-13 19:53:36,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 5116 transitions. [2022-07-13 19:53:36,323 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 5116 transitions. Word has length 124 [2022-07-13 19:53:36,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:53:36,323 INFO L495 AbstractCegarLoop]: Abstraction has 2865 states and 5116 transitions. [2022-07-13 19:53:36,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:53:36,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 5116 transitions. [2022-07-13 19:53:36,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 19:53:36,325 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:53:36,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:53:36,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 19:53:36,325 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:53:36,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:53:36,326 INFO L85 PathProgramCache]: Analyzing trace with hash -679434537, now seen corresponding path program 1 times [2022-07-13 19:53:36,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:53:36,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516964787] [2022-07-13 19:53:36,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:36,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:53:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:36,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:53:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:36,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 19:53:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:36,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 19:53:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:36,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 19:53:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:36,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 19:53:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:36,452 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 19:53:36,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:53:36,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516964787] [2022-07-13 19:53:36,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516964787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:53:36,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:53:36,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:53:36,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965749862] [2022-07-13 19:53:36,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:53:36,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:53:36,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:53:36,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:53:36,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:53:36,456 INFO L87 Difference]: Start difference. First operand 2865 states and 5116 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:53:38,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:53:38,191 INFO L93 Difference]: Finished difference Result 4529 states and 7768 transitions. [2022-07-13 19:53:38,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:53:38,192 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-13 19:53:38,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:53:38,204 INFO L225 Difference]: With dead ends: 4529 [2022-07-13 19:53:38,205 INFO L226 Difference]: Without dead ends: 3800 [2022-07-13 19:53:38,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:53:38,209 INFO L413 NwaCegarLoop]: 4623 mSDtfsCounter, 4955 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4969 SdHoareTripleChecker+Valid, 21770 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 19:53:38,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4969 Valid, 21770 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2012 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 19:53:38,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2022-07-13 19:53:38,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 3334. [2022-07-13 19:53:38,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3334 states, 3211 states have (on average 1.7620678916225474) internal successors, (5658), 3218 states have internal predecessors, (5658), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2022-07-13 19:53:38,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3334 states to 3334 states and 5843 transitions. [2022-07-13 19:53:38,306 INFO L78 Accepts]: Start accepts. Automaton has 3334 states and 5843 transitions. Word has length 124 [2022-07-13 19:53:38,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:53:38,306 INFO L495 AbstractCegarLoop]: Abstraction has 3334 states and 5843 transitions. [2022-07-13 19:53:38,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:53:38,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3334 states and 5843 transitions. [2022-07-13 19:53:38,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 19:53:38,308 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:53:38,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:53:38,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 19:53:38,309 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:53:38,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:53:38,309 INFO L85 PathProgramCache]: Analyzing trace with hash 709859477, now seen corresponding path program 1 times [2022-07-13 19:53:38,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:53:38,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402106841] [2022-07-13 19:53:38,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:38,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:53:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:38,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:53:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:38,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 19:53:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:38,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 19:53:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:38,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 19:53:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:38,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 19:53:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:38,393 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 19:53:38,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:53:38,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402106841] [2022-07-13 19:53:38,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402106841] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:53:38,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:53:38,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:53:38,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842484380] [2022-07-13 19:53:38,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:53:38,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:53:38,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:53:38,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:53:38,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:53:38,396 INFO L87 Difference]: Start difference. First operand 3334 states and 5843 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:53:40,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:53:40,015 INFO L93 Difference]: Finished difference Result 6226 states and 10431 transitions. [2022-07-13 19:53:40,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:53:40,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-13 19:53:40,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:53:40,041 INFO L225 Difference]: With dead ends: 6226 [2022-07-13 19:53:40,041 INFO L226 Difference]: Without dead ends: 5028 [2022-07-13 19:53:40,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:53:40,049 INFO L413 NwaCegarLoop]: 4619 mSDtfsCounter, 4951 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 2007 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4965 SdHoareTripleChecker+Valid, 21766 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 19:53:40,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4965 Valid, 21766 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2007 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 19:53:40,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2022-07-13 19:53:40,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 4273. [2022-07-13 19:53:40,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4273 states, 4058 states have (on average 1.7171020206998522) internal successors, (6968), 4069 states have internal predecessors, (6968), 151 states have call successors, (151), 55 states have call predecessors, (151), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2022-07-13 19:53:40,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4273 states to 4273 states and 7303 transitions. [2022-07-13 19:53:40,205 INFO L78 Accepts]: Start accepts. Automaton has 4273 states and 7303 transitions. Word has length 124 [2022-07-13 19:53:40,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:53:40,206 INFO L495 AbstractCegarLoop]: Abstraction has 4273 states and 7303 transitions. [2022-07-13 19:53:40,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:53:40,216 INFO L276 IsEmpty]: Start isEmpty. Operand 4273 states and 7303 transitions. [2022-07-13 19:53:40,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 19:53:40,218 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:53:40,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:53:40,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 19:53:40,219 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:53:40,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:53:40,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1323534569, now seen corresponding path program 1 times [2022-07-13 19:53:40,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:53:40,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010866305] [2022-07-13 19:53:40,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:40,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:53:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:40,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:53:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:40,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 19:53:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:40,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 19:53:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:40,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 19:53:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:40,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 19:53:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:40,331 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 19:53:40,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:53:40,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010866305] [2022-07-13 19:53:40,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010866305] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:53:40,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:53:40,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:53:40,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628112428] [2022-07-13 19:53:40,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:53:40,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:53:40,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:53:40,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:53:40,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:53:40,334 INFO L87 Difference]: Start difference. First operand 4273 states and 7303 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:53:42,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:53:42,058 INFO L93 Difference]: Finished difference Result 9619 states and 15773 transitions. [2022-07-13 19:53:42,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:53:42,059 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-13 19:53:42,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:53:42,109 INFO L225 Difference]: With dead ends: 9619 [2022-07-13 19:53:42,109 INFO L226 Difference]: Without dead ends: 7482 [2022-07-13 19:53:42,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:53:42,122 INFO L413 NwaCegarLoop]: 4615 mSDtfsCounter, 4947 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4961 SdHoareTripleChecker+Valid, 21762 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 19:53:42,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4961 Valid, 21762 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 19:53:42,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7482 states. [2022-07-13 19:53:42,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7482 to 6156. [2022-07-13 19:53:42,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6156 states, 5757 states have (on average 1.6664929650859823) internal successors, (9594), 5776 states have internal predecessors, (9594), 279 states have call successors, (279), 103 states have call predecessors, (279), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2022-07-13 19:53:42,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6156 states to 6156 states and 10247 transitions. [2022-07-13 19:53:42,309 INFO L78 Accepts]: Start accepts. Automaton has 6156 states and 10247 transitions. Word has length 124 [2022-07-13 19:53:42,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:53:42,310 INFO L495 AbstractCegarLoop]: Abstraction has 6156 states and 10247 transitions. [2022-07-13 19:53:42,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:53:42,310 INFO L276 IsEmpty]: Start isEmpty. Operand 6156 states and 10247 transitions. [2022-07-13 19:53:42,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 19:53:42,313 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:53:42,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:53:42,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 19:53:42,314 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:53:42,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:53:42,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1104724053, now seen corresponding path program 1 times [2022-07-13 19:53:42,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:53:42,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926352836] [2022-07-13 19:53:42,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:42,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:53:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:42,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:53:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:42,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 19:53:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:42,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 19:53:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:42,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 19:53:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:42,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 19:53:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:42,415 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 19:53:42,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:53:42,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926352836] [2022-07-13 19:53:42,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926352836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:53:42,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:53:42,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:53:42,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971984640] [2022-07-13 19:53:42,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:53:42,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:53:42,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:53:42,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:53:42,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:53:42,417 INFO L87 Difference]: Start difference. First operand 6156 states and 10247 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:53:44,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:53:44,376 INFO L93 Difference]: Finished difference Result 16404 states and 26515 transitions. [2022-07-13 19:53:44,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:53:44,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-13 19:53:44,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:53:44,415 INFO L225 Difference]: With dead ends: 16404 [2022-07-13 19:53:44,415 INFO L226 Difference]: Without dead ends: 12384 [2022-07-13 19:53:44,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:53:44,433 INFO L413 NwaCegarLoop]: 4609 mSDtfsCounter, 4946 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4960 SdHoareTripleChecker+Valid, 21756 SdHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 19:53:44,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4960 Valid, 21756 Invalid, 2069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 19:53:44,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12384 states. [2022-07-13 19:53:44,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12384 to 9935. [2022-07-13 19:53:44,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9935 states, 9168 states have (on average 1.6212914485165795) internal successors, (14864), 9203 states have internal predecessors, (14864), 535 states have call successors, (535), 199 states have call predecessors, (535), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2022-07-13 19:53:44,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9935 states to 9935 states and 16207 transitions. [2022-07-13 19:53:44,858 INFO L78 Accepts]: Start accepts. Automaton has 9935 states and 16207 transitions. Word has length 124 [2022-07-13 19:53:44,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:53:44,860 INFO L495 AbstractCegarLoop]: Abstraction has 9935 states and 16207 transitions. [2022-07-13 19:53:44,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:53:44,860 INFO L276 IsEmpty]: Start isEmpty. Operand 9935 states and 16207 transitions. [2022-07-13 19:53:44,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 19:53:44,865 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:53:44,866 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:53:44,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 19:53:44,868 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:53:44,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:53:44,868 INFO L85 PathProgramCache]: Analyzing trace with hash -202418345, now seen corresponding path program 1 times [2022-07-13 19:53:44,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:53:44,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080433776] [2022-07-13 19:53:44,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:44,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:53:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:44,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:53:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:44,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 19:53:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:44,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 19:53:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:44,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 19:53:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:44,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 19:53:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:44,964 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 19:53:44,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:53:44,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080433776] [2022-07-13 19:53:44,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080433776] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:53:44,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:53:44,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:53:44,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891645693] [2022-07-13 19:53:44,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:53:44,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:53:44,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:53:44,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:53:44,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:53:44,966 INFO L87 Difference]: Start difference. First operand 9935 states and 16207 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:53:46,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:53:46,046 INFO L93 Difference]: Finished difference Result 20276 states and 32868 transitions. [2022-07-13 19:53:46,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 19:53:46,046 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-13 19:53:46,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:53:46,131 INFO L225 Difference]: With dead ends: 20276 [2022-07-13 19:53:46,131 INFO L226 Difference]: Without dead ends: 12477 [2022-07-13 19:53:46,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 19:53:46,185 INFO L413 NwaCegarLoop]: 4362 mSDtfsCounter, 4791 mSDsluCounter, 12383 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4806 SdHoareTripleChecker+Valid, 16745 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 19:53:46,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4806 Valid, 16745 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 19:53:46,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12477 states. [2022-07-13 19:53:46,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12477 to 9935. [2022-07-13 19:53:46,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9935 states, 9168 states have (on average 1.6176919720767888) internal successors, (14831), 9203 states have internal predecessors, (14831), 535 states have call successors, (535), 199 states have call predecessors, (535), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2022-07-13 19:53:46,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9935 states to 9935 states and 16174 transitions. [2022-07-13 19:53:46,933 INFO L78 Accepts]: Start accepts. Automaton has 9935 states and 16174 transitions. Word has length 124 [2022-07-13 19:53:46,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:53:46,934 INFO L495 AbstractCegarLoop]: Abstraction has 9935 states and 16174 transitions. [2022-07-13 19:53:46,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:53:46,934 INFO L276 IsEmpty]: Start isEmpty. Operand 9935 states and 16174 transitions. [2022-07-13 19:53:46,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 19:53:46,940 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:53:46,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:53:46,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 19:53:46,941 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:53:46,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:53:46,941 INFO L85 PathProgramCache]: Analyzing trace with hash 828622553, now seen corresponding path program 1 times [2022-07-13 19:53:46,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:53:46,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241742676] [2022-07-13 19:53:46,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:46,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:53:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:46,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:53:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:46,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 19:53:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:47,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 19:53:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:47,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 19:53:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:47,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 19:53:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:47,033 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 19:53:47,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:53:47,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241742676] [2022-07-13 19:53:47,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241742676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:53:47,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:53:47,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:53:47,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029950961] [2022-07-13 19:53:47,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:53:47,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:53:47,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:53:47,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:53:47,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:53:47,036 INFO L87 Difference]: Start difference. First operand 9935 states and 16174 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:53:50,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:53:50,051 INFO L93 Difference]: Finished difference Result 33332 states and 53083 transitions. [2022-07-13 19:53:50,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 19:53:50,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-13 19:53:50,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:53:50,129 INFO L225 Difference]: With dead ends: 33332 [2022-07-13 19:53:50,129 INFO L226 Difference]: Without dead ends: 25533 [2022-07-13 19:53:50,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 19:53:50,157 INFO L413 NwaCegarLoop]: 4593 mSDtfsCounter, 5225 mSDsluCounter, 17139 mSDsCounter, 0 mSdLazyCounter, 1948 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5247 SdHoareTripleChecker+Valid, 21732 SdHoareTripleChecker+Invalid, 2029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 19:53:50,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5247 Valid, 21732 Invalid, 2029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1948 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 19:53:50,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25533 states. [2022-07-13 19:53:50,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25533 to 17492. [2022-07-13 19:53:50,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17492 states, 16021 states have (on average 1.586480244678859) internal successors, (25417), 16088 states have internal predecessors, (25417), 1015 states have call successors, (1015), 391 states have call predecessors, (1015), 454 states have return successors, (1806), 1076 states have call predecessors, (1806), 1013 states have call successors, (1806) [2022-07-13 19:53:50,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17492 states to 17492 states and 28238 transitions. [2022-07-13 19:53:50,960 INFO L78 Accepts]: Start accepts. Automaton has 17492 states and 28238 transitions. Word has length 124 [2022-07-13 19:53:50,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:53:50,960 INFO L495 AbstractCegarLoop]: Abstraction has 17492 states and 28238 transitions. [2022-07-13 19:53:50,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:53:50,961 INFO L276 IsEmpty]: Start isEmpty. Operand 17492 states and 28238 transitions. [2022-07-13 19:53:50,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 19:53:50,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:53:50,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:53:50,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 19:53:50,971 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:53:50,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:53:50,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1077780713, now seen corresponding path program 1 times [2022-07-13 19:53:50,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:53:50,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732934393] [2022-07-13 19:53:50,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:50,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:53:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:51,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:53:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:51,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 19:53:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:51,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 19:53:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:51,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 19:53:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:51,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 19:53:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:51,063 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 19:53:51,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:53:51,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732934393] [2022-07-13 19:53:51,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732934393] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:53:51,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:53:51,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:53:51,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860403185] [2022-07-13 19:53:51,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:53:51,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:53:51,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:53:51,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:53:51,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:53:51,065 INFO L87 Difference]: Start difference. First operand 17492 states and 28238 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:53:55,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:53:55,659 INFO L93 Difference]: Finished difference Result 62843 states and 100433 transitions. [2022-07-13 19:53:55,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 19:53:55,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-13 19:53:55,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:53:55,803 INFO L225 Difference]: With dead ends: 62843 [2022-07-13 19:53:55,804 INFO L226 Difference]: Without dead ends: 47487 [2022-07-13 19:53:55,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 19:53:55,848 INFO L413 NwaCegarLoop]: 4695 mSDtfsCounter, 4995 mSDsluCounter, 17136 mSDsCounter, 0 mSdLazyCounter, 2263 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5008 SdHoareTripleChecker+Valid, 21831 SdHoareTripleChecker+Invalid, 2341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 19:53:55,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5008 Valid, 21831 Invalid, 2341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2263 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 19:53:55,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47487 states. [2022-07-13 19:53:57,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47487 to 31929. [2022-07-13 19:53:57,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31929 states, 29082 states have (on average 1.5631318341242004) internal successors, (45459), 29213 states have internal predecessors, (45459), 1943 states have call successors, (1943), 775 states have call predecessors, (1943), 902 states have return successors, (4256), 2068 states have call predecessors, (4256), 1941 states have call successors, (4256) [2022-07-13 19:53:57,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31929 states to 31929 states and 51658 transitions. [2022-07-13 19:53:57,643 INFO L78 Accepts]: Start accepts. Automaton has 31929 states and 51658 transitions. Word has length 124 [2022-07-13 19:53:57,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:53:57,644 INFO L495 AbstractCegarLoop]: Abstraction has 31929 states and 51658 transitions. [2022-07-13 19:53:57,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:53:57,644 INFO L276 IsEmpty]: Start isEmpty. Operand 31929 states and 51658 transitions. [2022-07-13 19:53:57,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 19:53:57,660 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:53:57,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:53:57,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 19:53:57,661 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:53:57,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:53:57,661 INFO L85 PathProgramCache]: Analyzing trace with hash 523290393, now seen corresponding path program 1 times [2022-07-13 19:53:57,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:53:57,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123990090] [2022-07-13 19:53:57,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:57,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:53:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:57,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:53:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:57,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 19:53:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:57,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 19:53:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:57,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 19:53:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:57,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 19:53:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:57,756 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 19:53:57,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:53:57,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123990090] [2022-07-13 19:53:57,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123990090] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:53:57,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:53:57,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:53:57,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851451130] [2022-07-13 19:53:57,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:53:57,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:53:57,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:53:57,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:53:57,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:53:57,759 INFO L87 Difference]: Start difference. First operand 31929 states and 51658 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:54:05,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:54:05,563 INFO L93 Difference]: Finished difference Result 118758 states and 191663 transitions. [2022-07-13 19:54:05,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 19:54:05,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-13 19:54:05,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:54:05,982 INFO L225 Difference]: With dead ends: 118758 [2022-07-13 19:54:05,983 INFO L226 Difference]: Without dead ends: 88965 [2022-07-13 19:54:06,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 19:54:06,104 INFO L413 NwaCegarLoop]: 4583 mSDtfsCounter, 5145 mSDsluCounter, 17139 mSDsCounter, 0 mSdLazyCounter, 1932 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5167 SdHoareTripleChecker+Valid, 21722 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 19:54:06,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5167 Valid, 21722 Invalid, 2013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1932 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 19:54:06,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88965 states. [2022-07-13 19:54:10,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88965 to 61378. [2022-07-13 19:54:10,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61378 states, 55843 states have (on average 1.553587737048511) internal successors, (86757), 56102 states have internal predecessors, (86757), 3735 states have call successors, (3735), 1543 states have call predecessors, (3735), 1798 states have return successors, (10550), 3988 states have call predecessors, (10550), 3733 states have call successors, (10550) [2022-07-13 19:54:10,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61378 states to 61378 states and 101042 transitions. [2022-07-13 19:54:10,430 INFO L78 Accepts]: Start accepts. Automaton has 61378 states and 101042 transitions. Word has length 124 [2022-07-13 19:54:10,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:54:10,431 INFO L495 AbstractCegarLoop]: Abstraction has 61378 states and 101042 transitions. [2022-07-13 19:54:10,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:54:10,431 INFO L276 IsEmpty]: Start isEmpty. Operand 61378 states and 101042 transitions. [2022-07-13 19:54:10,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 19:54:10,460 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:54:10,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:54:10,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 19:54:10,460 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:54:10,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:54:10,461 INFO L85 PathProgramCache]: Analyzing trace with hash -533440809, now seen corresponding path program 1 times [2022-07-13 19:54:10,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:54:10,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307350708] [2022-07-13 19:54:10,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:54:10,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:54:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:10,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:54:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:10,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 19:54:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:10,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 19:54:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:10,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 19:54:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:10,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 19:54:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:10,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:54:10,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:54:10,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307350708] [2022-07-13 19:54:10,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307350708] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:54:10,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:54:10,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:54:10,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048608367] [2022-07-13 19:54:10,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:54:10,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:54:10,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:54:10,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:54:10,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:54:10,759 INFO L87 Difference]: Start difference. First operand 61378 states and 101042 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:54:24,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:54:24,037 INFO L93 Difference]: Finished difference Result 230013 states and 379509 transitions. [2022-07-13 19:54:24,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 19:54:24,037 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-13 19:54:24,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:54:25,020 INFO L225 Difference]: With dead ends: 230013 [2022-07-13 19:54:25,020 INFO L226 Difference]: Without dead ends: 170771 [2022-07-13 19:54:25,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 19:54:25,189 INFO L413 NwaCegarLoop]: 4578 mSDtfsCounter, 5105 mSDsluCounter, 17139 mSDsCounter, 0 mSdLazyCounter, 1924 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5127 SdHoareTripleChecker+Valid, 21717 SdHoareTripleChecker+Invalid, 2005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 19:54:25,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5127 Valid, 21717 Invalid, 2005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1924 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 19:54:25,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170771 states. [2022-07-13 19:54:32,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170771 to 120147. [2022-07-13 19:54:32,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120147 states, 109364 states have (on average 1.5496781390585568) internal successors, (169479), 109879 states have internal predecessors, (169479), 7191 states have call successors, (7191), 3079 states have call predecessors, (7191), 3590 states have return successors, (27384), 7700 states have call predecessors, (27384), 7189 states have call successors, (27384) [2022-07-13 19:54:33,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120147 states to 120147 states and 204054 transitions. [2022-07-13 19:54:33,377 INFO L78 Accepts]: Start accepts. Automaton has 120147 states and 204054 transitions. Word has length 124 [2022-07-13 19:54:33,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:54:33,377 INFO L495 AbstractCegarLoop]: Abstraction has 120147 states and 204054 transitions. [2022-07-13 19:54:33,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 19:54:33,378 INFO L276 IsEmpty]: Start isEmpty. Operand 120147 states and 204054 transitions. [2022-07-13 19:54:33,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 19:54:33,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:54:33,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:54:33,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 19:54:33,445 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:54:33,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:54:33,445 INFO L85 PathProgramCache]: Analyzing trace with hash 817944409, now seen corresponding path program 1 times [2022-07-13 19:54:33,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:54:33,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981815430] [2022-07-13 19:54:33,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:54:33,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:54:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:33,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:54:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:33,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 19:54:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:33,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 19:54:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:33,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 19:54:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:33,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 19:54:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:33,520 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 19:54:33,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:54:33,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981815430] [2022-07-13 19:54:33,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981815430] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:54:33,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:54:33,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:54:33,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960453647] [2022-07-13 19:54:33,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:54:33,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:54:33,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:54:33,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:54:33,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:54:33,522 INFO L87 Difference]: Start difference. First operand 120147 states and 204054 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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)