./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_label43+token_ring.09.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 5ab060d6e8ec67586454a3fd3cad3b6749e261734a1b9e4129e037a184a704d9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 19:33:50,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 19:33:50,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 19:33:50,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 19:33:50,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 19:33:50,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 19:33:50,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 19:33:50,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 19:33:50,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 19:33:50,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 19:33:50,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 19:33:50,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 19:33:50,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 19:33:50,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 19:33:50,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 19:33:50,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 19:33:50,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 19:33:50,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 19:33:50,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 19:33:50,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 19:33:50,794 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 19:33:50,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 19:33:50,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 19:33:50,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 19:33:50,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 19:33:50,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 19:33:50,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 19:33:50,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 19:33:50,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 19:33:50,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 19:33:50,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 19:33:50,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 19:33:50,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 19:33:50,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 19:33:50,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 19:33:50,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 19:33:50,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 19:33:50,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 19:33:50,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 19:33:50,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 19:33:50,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 19:33:50,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 19:33:50,815 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 19:33:50,840 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 19:33:50,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 19:33:50,840 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 19:33:50,840 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 19:33:50,841 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 19:33:50,841 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 19:33:50,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 19:33:50,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 19:33:50,842 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 19:33:50,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 19:33:50,842 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 19:33:50,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 19:33:50,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 19:33:50,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 19:33:50,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 19:33:50,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 19:33:50,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 19:33:50,843 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 19:33:50,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 19:33:50,844 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 19:33:50,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 19:33:50,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 19:33:50,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 19:33:50,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 19:33:50,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:33:50,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 19:33:50,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 19:33:50,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 19:33:50,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 19:33:50,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 19:33:50,845 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 19:33:50,846 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 19:33:50,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 19:33:50,846 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ab060d6e8ec67586454a3fd3cad3b6749e261734a1b9e4129e037a184a704d9 [2022-07-22 19:33:51,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 19:33:51,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 19:33:51,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 19:33:51,111 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 19:33:51,115 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 19:33:51,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-2.c [2022-07-22 19:33:51,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3bdabf33/8d9485225c9b41f8a4d863d4c35e8f6e/FLAGd1c417033 [2022-07-22 19:33:52,074 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 19:33:52,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-2.c [2022-07-22 19:33:52,141 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3bdabf33/8d9485225c9b41f8a4d863d4c35e8f6e/FLAGd1c417033 [2022-07-22 19:33:52,506 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3bdabf33/8d9485225c9b41f8a4d863d4c35e8f6e [2022-07-22 19:33:52,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 19:33:52,511 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 19:33:52,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 19:33:52,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 19:33:52,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 19:33:52,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:33:52" (1/1) ... [2022-07-22 19:33:52,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16936bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:52, skipping insertion in model container [2022-07-22 19:33:52,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:33:52" (1/1) ... [2022-07-22 19:33:52,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 19:33:52,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 19:33:54,268 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_label43+token_ring.09.cil-2.c[381679,381692] [2022-07-22 19:33:54,291 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_label43+token_ring.09.cil-2.c[383339,383352] [2022-07-22 19:33:54,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:33:54,537 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 19:33:55,320 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_label43+token_ring.09.cil-2.c[381679,381692] [2022-07-22 19:33:55,325 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_label43+token_ring.09.cil-2.c[383339,383352] [2022-07-22 19:33:55,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:33:55,409 INFO L208 MainTranslator]: Completed translation [2022-07-22 19:33:55,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:55 WrapperNode [2022-07-22 19:33:55,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 19:33:55,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 19:33:55,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 19:33:55,412 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 19:33:55,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:55" (1/1) ... [2022-07-22 19:33:55,540 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:55" (1/1) ... [2022-07-22 19:33:55,940 INFO L137 Inliner]: procedures = 62, calls = 69, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 13030 [2022-07-22 19:33:55,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 19:33:55,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 19:33:55,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 19:33:55,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 19:33:55,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:55" (1/1) ... [2022-07-22 19:33:55,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:55" (1/1) ... [2022-07-22 19:33:56,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:55" (1/1) ... [2022-07-22 19:33:56,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:55" (1/1) ... [2022-07-22 19:33:56,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:55" (1/1) ... [2022-07-22 19:33:56,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:55" (1/1) ... [2022-07-22 19:33:56,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:55" (1/1) ... [2022-07-22 19:33:56,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 19:33:56,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 19:33:56,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 19:33:56,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 19:33:56,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:55" (1/1) ... [2022-07-22 19:33:56,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:33:56,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:33:56,576 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) [2022-07-22 19:33:56,597 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 [2022-07-22 19:33:56,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 19:33:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-22 19:33:56,614 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-22 19:33:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 19:33:56,614 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 19:33:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-22 19:33:56,615 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-22 19:33:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-22 19:33:56,615 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-22 19:33:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-22 19:33:56,615 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-22 19:33:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-22 19:33:56,616 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-22 19:33:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-22 19:33:56,616 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-22 19:33:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 19:33:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 19:33:56,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 19:33:56,723 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 19:33:56,724 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 19:34:02,690 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 19:34:02,722 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 19:34:02,723 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-07-22 19:34:02,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:34:02 BoogieIcfgContainer [2022-07-22 19:34:02,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 19:34:02,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 19:34:02,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 19:34:02,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 19:34:02,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 07:33:52" (1/3) ... [2022-07-22 19:34:02,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a151ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:34:02, skipping insertion in model container [2022-07-22 19:34:02,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:55" (2/3) ... [2022-07-22 19:34:02,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a151ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:34:02, skipping insertion in model container [2022-07-22 19:34:02,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:34:02" (3/3) ... [2022-07-22 19:34:02,736 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.09.cil-2.c [2022-07-22 19:34:02,748 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 19:34:02,749 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 19:34:02,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 19:34:02,845 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@18ac5770, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@544c1613 [2022-07-22 19:34:02,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 19:34:02,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-22 19:34:02,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:34:02,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:34:02,875 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:34:02,875 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:34:02,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:34:02,880 INFO L85 PathProgramCache]: Analyzing trace with hash 416596476, now seen corresponding path program 1 times [2022-07-22 19:34:02,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:34:02,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088034412] [2022-07-22 19:34:02,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:34:02,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:34:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:03,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:34:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:03,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:34:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:03,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:34:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:03,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:34:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:03,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:34:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:03,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:34:03,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:34:03,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088034412] [2022-07-22 19:34:03,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088034412] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:34:03,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:34:03,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 19:34:03,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408060616] [2022-07-22 19:34:03,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:34:03,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 19:34:03,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:34:03,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 19:34:03,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 19:34:03,317 INFO L87 Difference]: Start difference. First operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2022-07-22 19:34:04,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:34:04,832 INFO L93 Difference]: Finished difference Result 5096 states and 9373 transitions. [2022-07-22 19:34:04,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 19:34:04,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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 146 [2022-07-22 19:34:04,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:34:04,857 INFO L225 Difference]: With dead ends: 5096 [2022-07-22 19:34:04,858 INFO L226 Difference]: Without dead ends: 2539 [2022-07-22 19:34:04,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:34:04,869 INFO L413 NwaCegarLoop]: 4557 mSDtfsCounter, 821 mSDsluCounter, 12405 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 16962 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:34:04,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 16962 Invalid, 622 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 19:34:04,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2022-07-22 19:34:05,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2430. [2022-07-22 19:34:05,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 2397 states have (on average 1.8327075511055486) internal successors, (4393), 2400 states have internal predecessors, (4393), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-22 19:34:05,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 4441 transitions. [2022-07-22 19:34:05,021 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 4441 transitions. Word has length 146 [2022-07-22 19:34:05,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:34:05,021 INFO L495 AbstractCegarLoop]: Abstraction has 2430 states and 4441 transitions. [2022-07-22 19:34:05,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2022-07-22 19:34:05,022 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 4441 transitions. [2022-07-22 19:34:05,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:34:05,026 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:34:05,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:34:05,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 19:34:05,027 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:34:05,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:34:05,028 INFO L85 PathProgramCache]: Analyzing trace with hash -982357126, now seen corresponding path program 1 times [2022-07-22 19:34:05,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:34:05,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100864188] [2022-07-22 19:34:05,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:34:05,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:34:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:05,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:34:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:05,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:34:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:05,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:34:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:05,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:34:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:05,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:34:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:05,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:34:05,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:34:05,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100864188] [2022-07-22 19:34:05,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100864188] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:34:05,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:34:05,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 19:34:05,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058424914] [2022-07-22 19:34:05,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:34:05,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 19:34:05,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:34:05,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 19:34:05,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 19:34:05,327 INFO L87 Difference]: Start difference. First operand 2430 states and 4441 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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) [2022-07-22 19:34:07,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:34:07,614 INFO L93 Difference]: Finished difference Result 3244 states and 5752 transitions. [2022-07-22 19:34:07,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 19:34:07,615 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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 146 [2022-07-22 19:34:07,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:34:07,631 INFO L225 Difference]: With dead ends: 3244 [2022-07-22 19:34:07,632 INFO L226 Difference]: Without dead ends: 2952 [2022-07-22 19:34:07,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 19:34:07,638 INFO L413 NwaCegarLoop]: 4528 mSDtfsCounter, 5181 mSDsluCounter, 12667 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5197 SdHoareTripleChecker+Valid, 17195 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:34:07,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5197 Valid, 17195 Invalid, 1693 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [112 Valid, 1581 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 19:34:07,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2022-07-22 19:34:07,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2733. [2022-07-22 19:34:07,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2675 states have (on average 1.8078504672897195) internal successors, (4836), 2679 states have internal predecessors, (4836), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-07-22 19:34:07,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4923 transitions. [2022-07-22 19:34:07,810 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4923 transitions. Word has length 146 [2022-07-22 19:34:07,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:34:07,811 INFO L495 AbstractCegarLoop]: Abstraction has 2733 states and 4923 transitions. [2022-07-22 19:34:07,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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) [2022-07-22 19:34:07,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4923 transitions. [2022-07-22 19:34:07,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:34:07,816 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:34:07,816 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:34:07,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 19:34:07,817 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:34:07,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:34:07,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1511144566, now seen corresponding path program 1 times [2022-07-22 19:34:07,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:34:07,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323957939] [2022-07-22 19:34:07,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:34:07,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:34:07,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:07,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:34:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:07,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:34:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:07,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:34:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:07,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:34:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:07,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:34:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:07,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:34:07,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:34:07,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323957939] [2022-07-22 19:34:07,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323957939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:34:07,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:34:07,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:34:07,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023970552] [2022-07-22 19:34:07,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:34:07,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:34:07,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:34:07,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:34:07,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:34:07,987 INFO L87 Difference]: Start difference. First operand 2733 states and 4923 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:34:10,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:34:10,566 INFO L93 Difference]: Finished difference Result 3972 states and 6919 transitions. [2022-07-22 19:34:10,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:34:10,567 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-22 19:34:10,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:34:10,582 INFO L225 Difference]: With dead ends: 3972 [2022-07-22 19:34:10,582 INFO L226 Difference]: Without dead ends: 3377 [2022-07-22 19:34:10,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:34:10,587 INFO L413 NwaCegarLoop]: 4773 mSDtfsCounter, 5201 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2459 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5217 SdHoareTripleChecker+Valid, 22176 SdHoareTripleChecker+Invalid, 2537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:34:10,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5217 Valid, 22176 Invalid, 2537 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 2459 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 19:34:10,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2022-07-22 19:34:10,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 3015. [2022-07-22 19:34:10,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 2932 states have (on average 1.7861527967257844) internal successors, (5237), 2937 states have internal predecessors, (5237), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-07-22 19:34:10,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 5362 transitions. [2022-07-22 19:34:10,694 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 5362 transitions. Word has length 146 [2022-07-22 19:34:10,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:34:10,694 INFO L495 AbstractCegarLoop]: Abstraction has 3015 states and 5362 transitions. [2022-07-22 19:34:10,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:34:10,695 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 5362 transitions. [2022-07-22 19:34:10,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:34:10,697 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:34:10,697 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:34:10,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 19:34:10,698 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:34:10,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:34:10,699 INFO L85 PathProgramCache]: Analyzing trace with hash 804547960, now seen corresponding path program 1 times [2022-07-22 19:34:10,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:34:10,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222164101] [2022-07-22 19:34:10,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:34:10,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:34:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:10,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:34:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:10,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:34:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:10,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:34:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:10,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:34:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:10,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:34:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:10,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:34:10,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:34:10,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222164101] [2022-07-22 19:34:10,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222164101] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:34:10,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:34:10,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:34:10,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444808749] [2022-07-22 19:34:10,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:34:10,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:34:10,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:34:10,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:34:10,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:34:10,849 INFO L87 Difference]: Start difference. First operand 3015 states and 5362 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:34:13,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:34:13,439 INFO L93 Difference]: Finished difference Result 5044 states and 8626 transitions. [2022-07-22 19:34:13,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:34:13,444 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-22 19:34:13,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:34:13,464 INFO L225 Difference]: With dead ends: 5044 [2022-07-22 19:34:13,465 INFO L226 Difference]: Without dead ends: 4167 [2022-07-22 19:34:13,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:34:13,473 INFO L413 NwaCegarLoop]: 4761 mSDtfsCounter, 5195 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2448 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5211 SdHoareTripleChecker+Valid, 22164 SdHoareTripleChecker+Invalid, 2528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:34:13,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5211 Valid, 22164 Invalid, 2528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2448 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 19:34:13,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2022-07-22 19:34:13,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 3583. [2022-07-22 19:34:13,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3450 states have (on average 1.752463768115942) internal successors, (6046), 3457 states have internal predecessors, (6046), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-07-22 19:34:13,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 6251 transitions. [2022-07-22 19:34:13,648 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 6251 transitions. Word has length 146 [2022-07-22 19:34:13,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:34:13,655 INFO L495 AbstractCegarLoop]: Abstraction has 3583 states and 6251 transitions. [2022-07-22 19:34:13,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:34:13,656 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 6251 transitions. [2022-07-22 19:34:13,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:34:13,659 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:34:13,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:34:13,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 19:34:13,660 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:34:13,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:34:13,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1666381562, now seen corresponding path program 1 times [2022-07-22 19:34:13,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:34:13,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283382275] [2022-07-22 19:34:13,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:34:13,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:34:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:13,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:34:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:13,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:34:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:13,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:34:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:13,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:34:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:13,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:34:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:13,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:34:13,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:34:13,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283382275] [2022-07-22 19:34:13,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283382275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:34:13,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:34:13,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:34:13,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030584422] [2022-07-22 19:34:13,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:34:13,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:34:13,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:34:13,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:34:13,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:34:13,822 INFO L87 Difference]: Start difference. First operand 3583 states and 6251 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:34:16,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:34:16,462 INFO L93 Difference]: Finished difference Result 7114 states and 11903 transitions. [2022-07-22 19:34:16,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:34:16,463 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-22 19:34:16,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:34:16,494 INFO L225 Difference]: With dead ends: 7114 [2022-07-22 19:34:16,495 INFO L226 Difference]: Without dead ends: 5669 [2022-07-22 19:34:16,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:34:16,508 INFO L413 NwaCegarLoop]: 4756 mSDtfsCounter, 5194 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2440 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5210 SdHoareTripleChecker+Valid, 22159 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:34:16,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5210 Valid, 22159 Invalid, 2520 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2440 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 19:34:16,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2022-07-22 19:34:16,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 4720. [2022-07-22 19:34:16,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4720 states, 4487 states have (on average 1.70804546467573) internal successors, (7664), 4498 states have internal predecessors, (7664), 169 states have call successors, (169), 55 states have call predecessors, (169), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-07-22 19:34:16,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 8035 transitions. [2022-07-22 19:34:16,795 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 8035 transitions. Word has length 146 [2022-07-22 19:34:16,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:34:16,796 INFO L495 AbstractCegarLoop]: Abstraction has 4720 states and 8035 transitions. [2022-07-22 19:34:16,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:34:16,797 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 8035 transitions. [2022-07-22 19:34:16,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:34:16,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:34:16,801 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:34:16,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 19:34:16,801 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:34:16,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:34:16,803 INFO L85 PathProgramCache]: Analyzing trace with hash -384027336, now seen corresponding path program 1 times [2022-07-22 19:34:16,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:34:16,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401514581] [2022-07-22 19:34:16,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:34:16,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:34:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:16,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:34:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:16,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:34:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:16,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:34:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:16,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:34:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:16,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:34:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:16,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:34:16,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:34:16,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401514581] [2022-07-22 19:34:16,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401514581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:34:16,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:34:16,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:34:16,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229306403] [2022-07-22 19:34:16,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:34:16,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:34:16,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:34:16,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:34:16,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:34:16,948 INFO L87 Difference]: Start difference. First operand 4720 states and 8035 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:34:19,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:34:19,623 INFO L93 Difference]: Finished difference Result 11253 states and 18473 transitions. [2022-07-22 19:34:19,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:34:19,623 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-22 19:34:19,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:34:19,663 INFO L225 Difference]: With dead ends: 11253 [2022-07-22 19:34:19,663 INFO L226 Difference]: Without dead ends: 8671 [2022-07-22 19:34:19,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:34:19,678 INFO L413 NwaCegarLoop]: 4751 mSDtfsCounter, 5193 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5209 SdHoareTripleChecker+Valid, 22154 SdHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:34:19,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5209 Valid, 22154 Invalid, 2512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2432 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 19:34:19,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8671 states. [2022-07-22 19:34:19,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8671 to 7001. [2022-07-22 19:34:19,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7001 states, 6568 states have (on average 1.6610840438489647) internal successors, (10910), 6587 states have internal predecessors, (10910), 313 states have call successors, (313), 103 states have call predecessors, (313), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-07-22 19:34:20,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 11631 transitions. [2022-07-22 19:34:20,005 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 11631 transitions. Word has length 146 [2022-07-22 19:34:20,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:34:20,006 INFO L495 AbstractCegarLoop]: Abstraction has 7001 states and 11631 transitions. [2022-07-22 19:34:20,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:34:20,006 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 11631 transitions. [2022-07-22 19:34:20,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:34:20,010 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:34:20,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:34:20,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 19:34:20,011 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:34:20,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:34:20,012 INFO L85 PathProgramCache]: Analyzing trace with hash 104019770, now seen corresponding path program 1 times [2022-07-22 19:34:20,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:34:20,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419794191] [2022-07-22 19:34:20,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:34:20,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:34:20,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:20,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:34:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:20,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:34:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:20,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:34:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:20,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:34:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:20,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:34:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:20,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:34:20,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:34:20,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419794191] [2022-07-22 19:34:20,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419794191] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:34:20,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:34:20,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:34:20,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122135764] [2022-07-22 19:34:20,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:34:20,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:34:20,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:34:20,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:34:20,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:34:20,139 INFO L87 Difference]: Start difference. First operand 7001 states and 11631 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:34:22,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:34:22,804 INFO L93 Difference]: Finished difference Result 19532 states and 31675 transitions. [2022-07-22 19:34:22,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:34:22,804 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-22 19:34:22,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:34:22,864 INFO L225 Difference]: With dead ends: 19532 [2022-07-22 19:34:22,864 INFO L226 Difference]: Without dead ends: 14669 [2022-07-22 19:34:22,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:34:22,889 INFO L413 NwaCegarLoop]: 4547 mSDtfsCounter, 5272 mSDsluCounter, 16867 mSDsCounter, 0 mSdLazyCounter, 2161 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5288 SdHoareTripleChecker+Valid, 21414 SdHoareTripleChecker+Invalid, 2275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 19:34:22,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5288 Valid, 21414 Invalid, 2275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2161 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 19:34:22,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14669 states. [2022-07-22 19:34:23,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14669 to 11578. [2022-07-22 19:34:23,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 10745 states have (on average 1.621591437878083) internal successors, (17424), 10780 states have internal predecessors, (17424), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-07-22 19:34:23,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 18899 transitions. [2022-07-22 19:34:23,588 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 18899 transitions. Word has length 146 [2022-07-22 19:34:23,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:34:23,589 INFO L495 AbstractCegarLoop]: Abstraction has 11578 states and 18899 transitions. [2022-07-22 19:34:23,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:34:23,589 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 18899 transitions. [2022-07-22 19:34:23,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:34:23,598 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:34:23,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:34:23,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 19:34:23,599 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:34:23,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:34:23,600 INFO L85 PathProgramCache]: Analyzing trace with hash -988615432, now seen corresponding path program 1 times [2022-07-22 19:34:23,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:34:23,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294541633] [2022-07-22 19:34:23,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:34:23,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:34:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:23,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:34:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:23,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:34:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:23,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:34:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:23,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:34:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:23,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:34:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:23,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:34:23,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:34:23,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294541633] [2022-07-22 19:34:23,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294541633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:34:23,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:34:23,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:34:23,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793387144] [2022-07-22 19:34:23,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:34:23,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:34:23,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:34:23,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:34:23,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:34:23,748 INFO L87 Difference]: Start difference. First operand 11578 states and 18899 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:34:25,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:34:25,588 INFO L93 Difference]: Finished difference Result 24276 states and 39482 transitions. [2022-07-22 19:34:25,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 19:34:25,589 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-22 19:34:25,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:34:25,647 INFO L225 Difference]: With dead ends: 24276 [2022-07-22 19:34:25,648 INFO L226 Difference]: Without dead ends: 14836 [2022-07-22 19:34:25,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 19:34:25,679 INFO L413 NwaCegarLoop]: 4458 mSDtfsCounter, 4979 mSDsluCounter, 12485 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4996 SdHoareTripleChecker+Valid, 16943 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:34:25,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4996 Valid, 16943 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 19:34:25,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14836 states. [2022-07-22 19:34:26,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14836 to 11578. [2022-07-22 19:34:26,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 10745 states have (on average 1.6185202419730107) internal successors, (17391), 10780 states have internal predecessors, (17391), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-07-22 19:34:26,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 18866 transitions. [2022-07-22 19:34:26,245 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 18866 transitions. Word has length 146 [2022-07-22 19:34:26,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:34:26,246 INFO L495 AbstractCegarLoop]: Abstraction has 11578 states and 18866 transitions. [2022-07-22 19:34:26,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:34:26,246 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 18866 transitions. [2022-07-22 19:34:26,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:34:26,255 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:34:26,255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:34:26,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 19:34:26,256 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:34:26,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:34:26,256 INFO L85 PathProgramCache]: Analyzing trace with hash 2024179578, now seen corresponding path program 1 times [2022-07-22 19:34:26,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:34:26,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780940866] [2022-07-22 19:34:26,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:34:26,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:34:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:26,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:34:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:26,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:34:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:26,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:34:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:26,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:34:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:26,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:34:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:34:26,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:34:26,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780940866] [2022-07-22 19:34:26,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780940866] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:34:26,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:34:26,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:34:26,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395517109] [2022-07-22 19:34:26,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:34:26,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:34:26,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:34:26,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:34:26,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:34:26,384 INFO L87 Difference]: Start difference. First operand 11578 states and 18866 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:34:29,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:34:29,965 INFO L93 Difference]: Finished difference Result 36057 states and 58041 transitions. [2022-07-22 19:34:29,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:34:29,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-22 19:34:29,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:34:30,069 INFO L225 Difference]: With dead ends: 36057 [2022-07-22 19:34:30,070 INFO L226 Difference]: Without dead ends: 26617 [2022-07-22 19:34:30,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:34:30,102 INFO L413 NwaCegarLoop]: 4735 mSDtfsCounter, 5184 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2397 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5200 SdHoareTripleChecker+Valid, 22138 SdHoareTripleChecker+Invalid, 2477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 19:34:30,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5200 Valid, 22138 Invalid, 2477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2397 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 19:34:30,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26617 states. [2022-07-22 19:34:31,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26617 to 20796. [2022-07-22 19:34:31,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20796 states, 19163 states have (on average 1.5898867609455722) internal successors, (30467), 19230 states have internal predecessors, (30467), 1177 states have call successors, (1177), 391 states have call predecessors, (1177), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2022-07-22 19:34:31,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20796 states to 20796 states and 33612 transitions. [2022-07-22 19:34:31,258 INFO L78 Accepts]: Start accepts. Automaton has 20796 states and 33612 transitions. Word has length 146 [2022-07-22 19:34:31,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:34:31,259 INFO L495 AbstractCegarLoop]: Abstraction has 20796 states and 33612 transitions. [2022-07-22 19:34:31,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:34:31,259 INFO L276 IsEmpty]: Start isEmpty. Operand 20796 states and 33612 transitions. [2022-07-22 19:34:31,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:34:31,274 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:34:31,274 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:34:31,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 19:34:31,275 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:34:31,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:34:31,275 INFO L85 PathProgramCache]: Analyzing trace with hash 181703864, now seen corresponding path program 1 times [2022-07-22 19:34:31,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:34:31,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91696063] [2022-07-22 19:34:31,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:34:31,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:34:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:31,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:34:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:31,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:34:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:31,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:34:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:31,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:34:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:31,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:34:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:31,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:34:31,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:34:31,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91696063] [2022-07-22 19:34:31,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91696063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:34:31,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:34:31,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:34:31,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008170230] [2022-07-22 19:34:31,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:34:31,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:34:31,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:34:31,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:34:31,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:34:31,395 INFO L87 Difference]: Start difference. First operand 20796 states and 33612 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:34:36,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:34:36,349 INFO L93 Difference]: Finished difference Result 69177 states and 111649 transitions. [2022-07-22 19:34:36,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:34:36,349 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-22 19:34:36,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:34:36,575 INFO L225 Difference]: With dead ends: 69177 [2022-07-22 19:34:36,576 INFO L226 Difference]: Without dead ends: 50519 [2022-07-22 19:34:36,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:34:36,640 INFO L413 NwaCegarLoop]: 4728 mSDtfsCounter, 5186 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5202 SdHoareTripleChecker+Valid, 22131 SdHoareTripleChecker+Invalid, 2469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:34:36,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5202 Valid, 22131 Invalid, 2469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 19:34:36,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50519 states. [2022-07-22 19:34:38,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50519 to 39293. [2022-07-22 19:34:38,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39293 states, 36060 states have (on average 1.5726289517470882) internal successors, (56709), 36191 states have internal predecessors, (56709), 2329 states have call successors, (2329), 775 states have call predecessors, (2329), 902 states have return successors, (4642), 2454 states have call predecessors, (4642), 2327 states have call successors, (4642) [2022-07-22 19:34:39,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39293 states to 39293 states and 63680 transitions. [2022-07-22 19:34:39,123 INFO L78 Accepts]: Start accepts. Automaton has 39293 states and 63680 transitions. Word has length 146 [2022-07-22 19:34:39,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:34:39,123 INFO L495 AbstractCegarLoop]: Abstraction has 39293 states and 63680 transitions. [2022-07-22 19:34:39,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:34:39,124 INFO L276 IsEmpty]: Start isEmpty. Operand 39293 states and 63680 transitions. [2022-07-22 19:34:39,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:34:39,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:34:39,147 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:34:39,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 19:34:39,147 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:34:39,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:34:39,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1540298822, now seen corresponding path program 1 times [2022-07-22 19:34:39,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:34:39,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400592365] [2022-07-22 19:34:39,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:34:39,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:34:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:39,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:34:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:39,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:34:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:39,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:34:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:39,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:34:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:39,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:34:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:39,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:34:39,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:34:39,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400592365] [2022-07-22 19:34:39,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400592365] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:34:39,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:34:39,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:34:39,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158604756] [2022-07-22 19:34:39,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:34:39,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:34:39,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:34:39,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:34:39,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:34:39,302 INFO L87 Difference]: Start difference. First operand 39293 states and 63680 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:34:50,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:34:50,144 INFO L93 Difference]: Finished difference Result 151030 states and 244645 transitions. [2022-07-22 19:34:50,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:34:50,145 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-22 19:34:50,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:34:50,547 INFO L225 Difference]: With dead ends: 151030 [2022-07-22 19:34:50,547 INFO L226 Difference]: Without dead ends: 113875 [2022-07-22 19:34:50,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:34:50,686 INFO L413 NwaCegarLoop]: 4856 mSDtfsCounter, 5263 mSDsluCounter, 17392 mSDsCounter, 0 mSdLazyCounter, 2774 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5278 SdHoareTripleChecker+Valid, 22248 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:34:50,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5278 Valid, 22248 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2774 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 19:34:50,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113875 states. [2022-07-22 19:34:55,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113875 to 74879. [2022-07-22 19:34:56,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74879 states, 68574 states have (on average 1.5615393589407065) internal successors, (107081), 68833 states have internal predecessors, (107081), 4505 states have call successors, (4505), 1543 states have call predecessors, (4505), 1798 states have return successors, (11320), 4758 states have call predecessors, (11320), 4503 states have call successors, (11320) [2022-07-22 19:34:56,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74879 states to 74879 states and 122906 transitions. [2022-07-22 19:34:56,393 INFO L78 Accepts]: Start accepts. Automaton has 74879 states and 122906 transitions. Word has length 146 [2022-07-22 19:34:56,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:34:56,394 INFO L495 AbstractCegarLoop]: Abstraction has 74879 states and 122906 transitions. [2022-07-22 19:34:56,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:34:56,394 INFO L276 IsEmpty]: Start isEmpty. Operand 74879 states and 122906 transitions. [2022-07-22 19:34:56,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:34:56,432 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:34:56,432 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:34:56,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 19:34:56,432 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:34:56,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:34:56,433 INFO L85 PathProgramCache]: Analyzing trace with hash 388633404, now seen corresponding path program 1 times [2022-07-22 19:34:56,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:34:56,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581158494] [2022-07-22 19:34:56,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:34:56,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:34:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:56,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:34:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:56,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:34:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:56,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:34:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:56,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:34:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:56,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:34:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:56,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:34:56,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:34:56,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581158494] [2022-07-22 19:34:56,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581158494] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:34:56,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:34:56,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:34:56,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403242272] [2022-07-22 19:34:56,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:34:56,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:34:56,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:34:56,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:34:56,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:34:56,567 INFO L87 Difference]: Start difference. First operand 74879 states and 122906 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:35:16,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:35:16,858 INFO L93 Difference]: Finished difference Result 290934 states and 478781 transitions. [2022-07-22 19:35:16,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:35:16,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-22 19:35:16,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:35:17,841 INFO L225 Difference]: With dead ends: 290934 [2022-07-22 19:35:17,841 INFO L226 Difference]: Without dead ends: 218193 [2022-07-22 19:35:18,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:35:18,249 INFO L413 NwaCegarLoop]: 4712 mSDtfsCounter, 5471 mSDsluCounter, 17395 mSDsCounter, 0 mSdLazyCounter, 2353 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5497 SdHoareTripleChecker+Valid, 22107 SdHoareTripleChecker+Invalid, 2441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:35:18,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5497 Valid, 22107 Invalid, 2441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2353 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 19:35:18,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218193 states.