./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.09.cil-1.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 6d55d399b7f413c968459e57be858565c9c3a03797404fd2613513b79af9aeb3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:08:11,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:08:11,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:08:11,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:08:11,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:08:11,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:08:11,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:08:11,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:08:11,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:08:11,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:08:11,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:08:11,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:08:11,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:08:11,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:08:11,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:08:11,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:08:11,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:08:11,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:08:11,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:08:11,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:08:11,755 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:08:11,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:08:11,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:08:11,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:08:11,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:08:11,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:08:11,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:08:11,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:08:11,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:08:11,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:08:11,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:08:11,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:08:11,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:08:11,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:08:11,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:08:11,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:08:11,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:08:11,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:08:11,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:08:11,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:08:11,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:08:11,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:08:11,778 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:08:11,807 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:08:11,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:08:11,808 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:08:11,808 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:08:11,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:08:11,809 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:08:11,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:08:11,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:08:11,810 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:08:11,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:08:11,811 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:08:11,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:08:11,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:08:11,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:08:11,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:08:11,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:08:11,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:08:11,812 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:08:11,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:08:11,812 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:08:11,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:08:11,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:08:11,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:08:11,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:08:11,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:08:11,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:08:11,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:08:11,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:08:11,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:08:11,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:08:11,815 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:08:11,816 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:08:11,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:08:11,816 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d55d399b7f413c968459e57be858565c9c3a03797404fd2613513b79af9aeb3 [2022-07-13 21:08:12,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:08:12,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:08:12,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:08:12,103 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:08:12,105 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:08:12,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.09.cil-1.c [2022-07-13 21:08:12,175 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/371640040/69ef93cf0faf42fbab12ffd04eb0b8df/FLAG6d8f48364 [2022-07-13 21:08:12,664 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:08:12,665 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.09.cil-1.c [2022-07-13 21:08:12,676 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/371640040/69ef93cf0faf42fbab12ffd04eb0b8df/FLAG6d8f48364 [2022-07-13 21:08:13,017 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/371640040/69ef93cf0faf42fbab12ffd04eb0b8df [2022-07-13 21:08:13,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:08:13,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:08:13,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:08:13,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:08:13,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:08:13,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:08:13" (1/1) ... [2022-07-13 21:08:13,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@480cdf0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:13, skipping insertion in model container [2022-07-13 21:08:13,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:08:13" (1/1) ... [2022-07-13 21:08:13,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:08:13,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:08:13,310 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/pc_sfifo_1.cil-2+token_ring.09.cil-1.c[913,926] [2022-07-13 21:08:13,371 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/pc_sfifo_1.cil-2+token_ring.09.cil-1.c[5977,5990] [2022-07-13 21:08:13,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:08:13,503 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:08:13,516 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/pc_sfifo_1.cil-2+token_ring.09.cil-1.c[913,926] [2022-07-13 21:08:13,534 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/pc_sfifo_1.cil-2+token_ring.09.cil-1.c[5977,5990] [2022-07-13 21:08:13,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:08:13,603 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:08:13,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:13 WrapperNode [2022-07-13 21:08:13,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:08:13,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:08:13,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:08:13,606 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:08:13,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:13" (1/1) ... [2022-07-13 21:08:13,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:13" (1/1) ... [2022-07-13 21:08:13,689 INFO L137 Inliner]: procedures = 66, calls = 75, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 881 [2022-07-13 21:08:13,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:08:13,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:08:13,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:08:13,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:08:13,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:13" (1/1) ... [2022-07-13 21:08:13,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:13" (1/1) ... [2022-07-13 21:08:13,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:13" (1/1) ... [2022-07-13 21:08:13,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:13" (1/1) ... [2022-07-13 21:08:13,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:13" (1/1) ... [2022-07-13 21:08:13,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:13" (1/1) ... [2022-07-13 21:08:13,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:13" (1/1) ... [2022-07-13 21:08:13,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:08:13,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:08:13,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:08:13,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:08:13,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:13" (1/1) ... [2022-07-13 21:08:13,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:08:13,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:08:13,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 21:08:13,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 21:08:13,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:08:13,852 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 21:08:13,852 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 21:08:13,852 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-07-13 21:08:13,853 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-07-13 21:08:13,853 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-13 21:08:13,853 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-13 21:08:13,853 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-13 21:08:13,853 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-13 21:08:13,853 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-13 21:08:13,854 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-13 21:08:13,854 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-13 21:08:13,854 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-13 21:08:13,854 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-13 21:08:13,854 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-13 21:08:13,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:08:13,855 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-13 21:08:13,855 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-13 21:08:13,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:08:13,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:08:13,855 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-13 21:08:13,855 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-13 21:08:13,957 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:08:13,959 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:08:14,694 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:08:14,709 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:08:14,710 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-13 21:08:14,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:08:14 BoogieIcfgContainer [2022-07-13 21:08:14,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:08:14,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:08:14,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:08:14,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:08:14,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:08:13" (1/3) ... [2022-07-13 21:08:14,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227c6538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:08:14, skipping insertion in model container [2022-07-13 21:08:14,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:13" (2/3) ... [2022-07-13 21:08:14,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227c6538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:08:14, skipping insertion in model container [2022-07-13 21:08:14,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:08:14" (3/3) ... [2022-07-13 21:08:14,723 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.09.cil-1.c [2022-07-13 21:08:14,736 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:08:14,737 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:08:14,798 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:08:14,804 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@3a048617, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@26db507a [2022-07-13 21:08:14,805 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 21:08:14,810 INFO L276 IsEmpty]: Start isEmpty. Operand has 379 states, 338 states have (on average 1.636094674556213) internal successors, (553), 343 states have internal predecessors, (553), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-13 21:08:14,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-13 21:08:14,820 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:14,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:08:14,822 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:14,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:14,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1554468982, now seen corresponding path program 1 times [2022-07-13 21:08:14,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:14,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565104903] [2022-07-13 21:08:14,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:14,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:15,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:08:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:15,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 21:08:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:15,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:08:15,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:15,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565104903] [2022-07-13 21:08:15,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565104903] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:15,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:15,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 21:08:15,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150779186] [2022-07-13 21:08:15,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:15,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:08:15,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:15,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:08:15,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:08:15,173 INFO L87 Difference]: Start difference. First operand has 379 states, 338 states have (on average 1.636094674556213) internal successors, (553), 343 states have internal predecessors, (553), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 21:08:15,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:15,455 INFO L93 Difference]: Finished difference Result 806 states and 1296 transitions. [2022-07-13 21:08:15,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:08:15,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-07-13 21:08:15,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:15,471 INFO L225 Difference]: With dead ends: 806 [2022-07-13 21:08:15,471 INFO L226 Difference]: Without dead ends: 439 [2022-07-13 21:08:15,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:08:15,479 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 764 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:15,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 943 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 21:08:15,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-07-13 21:08:15,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 433. [2022-07-13 21:08:15,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 387 states have (on average 1.5142118863049097) internal successors, (586), 391 states have internal predecessors, (586), 33 states have call successors, (33), 11 states have call predecessors, (33), 11 states have return successors, (37), 31 states have call predecessors, (37), 31 states have call successors, (37) [2022-07-13 21:08:15,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 656 transitions. [2022-07-13 21:08:15,552 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 656 transitions. Word has length 44 [2022-07-13 21:08:15,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:15,552 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 656 transitions. [2022-07-13 21:08:15,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 21:08:15,553 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 656 transitions. [2022-07-13 21:08:15,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 21:08:15,556 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:15,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:08:15,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:08:15,557 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:15,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:15,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1185645894, now seen corresponding path program 1 times [2022-07-13 21:08:15,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:15,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584763493] [2022-07-13 21:08:15,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:15,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:15,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:08:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:15,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 21:08:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:08:15,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:15,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584763493] [2022-07-13 21:08:15,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584763493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:15,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:15,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 21:08:15,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005937577] [2022-07-13 21:08:15,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:15,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:08:15,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:15,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:08:15,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:08:15,669 INFO L87 Difference]: Start difference. First operand 433 states and 656 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 21:08:16,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:16,060 INFO L93 Difference]: Finished difference Result 681 states and 996 transitions. [2022-07-13 21:08:16,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:08:16,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-13 21:08:16,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:16,065 INFO L225 Difference]: With dead ends: 681 [2022-07-13 21:08:16,066 INFO L226 Difference]: Without dead ends: 557 [2022-07-13 21:08:16,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:08:16,069 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 308 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:16,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 1208 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:08:16,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-07-13 21:08:16,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 500. [2022-07-13 21:08:16,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 448 states have (on average 1.4955357142857142) internal successors, (670), 452 states have internal predecessors, (670), 36 states have call successors, (36), 14 states have call predecessors, (36), 14 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2022-07-13 21:08:16,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 746 transitions. [2022-07-13 21:08:16,115 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 746 transitions. Word has length 45 [2022-07-13 21:08:16,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:16,118 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 746 transitions. [2022-07-13 21:08:16,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 21:08:16,119 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 746 transitions. [2022-07-13 21:08:16,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 21:08:16,121 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:16,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:08:16,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:08:16,121 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:16,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:16,122 INFO L85 PathProgramCache]: Analyzing trace with hash -98711567, now seen corresponding path program 1 times [2022-07-13 21:08:16,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:16,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184371805] [2022-07-13 21:08:16,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:16,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:16,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:08:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:16,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 21:08:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:16,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:08:16,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:16,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184371805] [2022-07-13 21:08:16,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184371805] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:16,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:16,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 21:08:16,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350867342] [2022-07-13 21:08:16,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:16,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:08:16,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:16,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:08:16,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:08:16,213 INFO L87 Difference]: Start difference. First operand 500 states and 746 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 21:08:16,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:16,387 INFO L93 Difference]: Finished difference Result 908 states and 1305 transitions. [2022-07-13 21:08:16,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:08:16,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-13 21:08:16,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:16,394 INFO L225 Difference]: With dead ends: 908 [2022-07-13 21:08:16,394 INFO L226 Difference]: Without dead ends: 717 [2022-07-13 21:08:16,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:08:16,397 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 773 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:16,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 942 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:08:16,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-07-13 21:08:16,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 665. [2022-07-13 21:08:16,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 594 states have (on average 1.4478114478114479) internal successors, (860), 601 states have internal predecessors, (860), 47 states have call successors, (47), 21 states have call predecessors, (47), 22 states have return successors, (57), 43 states have call predecessors, (57), 45 states have call successors, (57) [2022-07-13 21:08:16,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 964 transitions. [2022-07-13 21:08:16,435 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 964 transitions. Word has length 45 [2022-07-13 21:08:16,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:16,436 INFO L495 AbstractCegarLoop]: Abstraction has 665 states and 964 transitions. [2022-07-13 21:08:16,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 21:08:16,436 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 964 transitions. [2022-07-13 21:08:16,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-13 21:08:16,439 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:16,439 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:08:16,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:08:16,439 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:16,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:16,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1131261626, now seen corresponding path program 1 times [2022-07-13 21:08:16,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:16,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640742608] [2022-07-13 21:08:16,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:16,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:16,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:08:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:16,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:08:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:16,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 21:08:16,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:16,518 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 21:08:16,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:16,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640742608] [2022-07-13 21:08:16,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640742608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:16,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:16,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 21:08:16,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305571477] [2022-07-13 21:08:16,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:16,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:08:16,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:16,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:08:16,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:08:16,522 INFO L87 Difference]: Start difference. First operand 665 states and 964 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 21:08:16,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:16,888 INFO L93 Difference]: Finished difference Result 1249 states and 1749 transitions. [2022-07-13 21:08:16,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:08:16,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2022-07-13 21:08:16,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:16,893 INFO L225 Difference]: With dead ends: 1249 [2022-07-13 21:08:16,894 INFO L226 Difference]: Without dead ends: 893 [2022-07-13 21:08:16,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:08:16,896 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 292 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:16,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 1263 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:08:16,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2022-07-13 21:08:16,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 855. [2022-07-13 21:08:16,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 760 states have (on average 1.394736842105263) internal successors, (1060), 769 states have internal predecessors, (1060), 61 states have call successors, (61), 29 states have call predecessors, (61), 32 states have return successors, (81), 57 states have call predecessors, (81), 59 states have call successors, (81) [2022-07-13 21:08:16,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1202 transitions. [2022-07-13 21:08:16,935 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1202 transitions. Word has length 62 [2022-07-13 21:08:16,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:16,936 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 1202 transitions. [2022-07-13 21:08:16,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 21:08:16,936 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1202 transitions. [2022-07-13 21:08:16,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 21:08:16,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:16,938 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:08:16,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:08:16,939 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:16,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:16,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1244909695, now seen corresponding path program 1 times [2022-07-13 21:08:16,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:16,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302609479] [2022-07-13 21:08:16,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:16,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:16,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:08:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:16,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:08:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:16,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 21:08:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:16,988 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 21:08:16,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:16,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302609479] [2022-07-13 21:08:16,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302609479] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:16,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:16,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 21:08:16,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477261546] [2022-07-13 21:08:16,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:16,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:08:16,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:16,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:08:16,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:08:16,991 INFO L87 Difference]: Start difference. First operand 855 states and 1202 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 21:08:17,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:17,145 INFO L93 Difference]: Finished difference Result 1508 states and 2055 transitions. [2022-07-13 21:08:17,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:08:17,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2022-07-13 21:08:17,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:17,152 INFO L225 Difference]: With dead ends: 1508 [2022-07-13 21:08:17,152 INFO L226 Difference]: Without dead ends: 1054 [2022-07-13 21:08:17,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:08:17,157 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 760 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:17,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 939 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:08:17,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2022-07-13 21:08:17,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 999. [2022-07-13 21:08:17,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 888 states have (on average 1.3637387387387387) internal successors, (1211), 899 states have internal predecessors, (1211), 69 states have call successors, (69), 35 states have call predecessors, (69), 40 states have return successors, (95), 65 states have call predecessors, (95), 67 states have call successors, (95) [2022-07-13 21:08:17,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1375 transitions. [2022-07-13 21:08:17,227 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1375 transitions. Word has length 67 [2022-07-13 21:08:17,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:17,227 INFO L495 AbstractCegarLoop]: Abstraction has 999 states and 1375 transitions. [2022-07-13 21:08:17,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 21:08:17,228 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1375 transitions. [2022-07-13 21:08:17,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 21:08:17,231 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:17,231 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:08:17,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:08:17,232 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:17,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:17,232 INFO L85 PathProgramCache]: Analyzing trace with hash 2059834607, now seen corresponding path program 1 times [2022-07-13 21:08:17,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:17,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263088622] [2022-07-13 21:08:17,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:17,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:17,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:08:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:17,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:08:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:17,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:08:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:17,363 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 21:08:17,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:17,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263088622] [2022-07-13 21:08:17,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263088622] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:08:17,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521220707] [2022-07-13 21:08:17,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:17,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:08:17,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:08:17,371 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:08:17,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 21:08:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:17,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 21:08:17,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:08:17,636 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:08:17,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 21:08:17,691 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 21:08:17,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521220707] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 21:08:17,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 21:08:17,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-07-13 21:08:17,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993443427] [2022-07-13 21:08:17,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:17,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:08:17,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:17,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:08:17,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:08:17,705 INFO L87 Difference]: Start difference. First operand 999 states and 1375 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 21:08:17,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:17,841 INFO L93 Difference]: Finished difference Result 1055 states and 1443 transitions. [2022-07-13 21:08:17,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 21:08:17,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2022-07-13 21:08:17,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:17,847 INFO L225 Difference]: With dead ends: 1055 [2022-07-13 21:08:17,848 INFO L226 Difference]: Without dead ends: 1052 [2022-07-13 21:08:17,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:08:17,849 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 1025 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:17,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 657 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:08:17,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2022-07-13 21:08:17,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 998. [2022-07-13 21:08:17,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 888 states have (on average 1.3614864864864864) internal successors, (1209), 898 states have internal predecessors, (1209), 68 states have call successors, (68), 35 states have call predecessors, (68), 40 states have return successors, (95), 65 states have call predecessors, (95), 67 states have call successors, (95) [2022-07-13 21:08:17,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1372 transitions. [2022-07-13 21:08:17,895 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1372 transitions. Word has length 68 [2022-07-13 21:08:17,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:17,896 INFO L495 AbstractCegarLoop]: Abstraction has 998 states and 1372 transitions. [2022-07-13 21:08:17,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 21:08:17,896 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1372 transitions. [2022-07-13 21:08:17,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-13 21:08:17,898 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:17,899 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:08:17,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 21:08:18,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-13 21:08:18,116 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:18,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:18,116 INFO L85 PathProgramCache]: Analyzing trace with hash -570809660, now seen corresponding path program 1 times [2022-07-13 21:08:18,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:18,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346402670] [2022-07-13 21:08:18,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:18,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:18,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:08:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:18,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:08:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:18,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:08:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:18,206 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 21:08:18,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:18,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346402670] [2022-07-13 21:08:18,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346402670] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:08:18,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927176835] [2022-07-13 21:08:18,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:18,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:08:18,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:08:18,212 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:08:18,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 21:08:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:18,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 21:08:18,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:08:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:08:18,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 21:08:18,667 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 21:08:18,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927176835] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 21:08:18,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 21:08:18,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-07-13 21:08:18,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35746628] [2022-07-13 21:08:18,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 21:08:18,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 21:08:18,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:18,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 21:08:18,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:08:18,671 INFO L87 Difference]: Start difference. First operand 998 states and 1372 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-13 21:08:20,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:20,197 INFO L93 Difference]: Finished difference Result 2698 states and 3592 transitions. [2022-07-13 21:08:20,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-13 21:08:20,198 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2022-07-13 21:08:20,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:20,207 INFO L225 Difference]: With dead ends: 2698 [2022-07-13 21:08:20,208 INFO L226 Difference]: Without dead ends: 2154 [2022-07-13 21:08:20,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2022-07-13 21:08:20,211 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 1566 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 1901 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 3599 SdHoareTripleChecker+Invalid, 1995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:20,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1596 Valid, 3599 Invalid, 1995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1901 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 21:08:20,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2022-07-13 21:08:20,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 1387. [2022-07-13 21:08:20,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1387 states, 1238 states have (on average 1.327140549273021) internal successors, (1643), 1256 states have internal predecessors, (1643), 88 states have call successors, (88), 49 states have call predecessors, (88), 59 states have return successors, (129), 82 states have call predecessors, (129), 87 states have call successors, (129) [2022-07-13 21:08:20,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 1860 transitions. [2022-07-13 21:08:20,307 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 1860 transitions. Word has length 69 [2022-07-13 21:08:20,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:20,308 INFO L495 AbstractCegarLoop]: Abstraction has 1387 states and 1860 transitions. [2022-07-13 21:08:20,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-13 21:08:20,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 1860 transitions. [2022-07-13 21:08:20,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-13 21:08:20,312 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:20,313 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:08:20,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 21:08:20,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-07-13 21:08:20,538 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:20,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:20,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1763884292, now seen corresponding path program 1 times [2022-07-13 21:08:20,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:20,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532523598] [2022-07-13 21:08:20,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:20,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:20,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:08:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:20,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:08:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:20,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 21:08:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:20,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 21:08:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:20,637 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 21:08:20,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:20,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532523598] [2022-07-13 21:08:20,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532523598] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:08:20,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968067855] [2022-07-13 21:08:20,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:20,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:08:20,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:08:20,640 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:08:20,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 21:08:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:20,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 21:08:20,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:08:20,784 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 21:08:20,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:08:20,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968067855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:20,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:08:20,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-13 21:08:20,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011365511] [2022-07-13 21:08:20,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:20,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:08:20,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:20,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:08:20,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:08:20,788 INFO L87 Difference]: Start difference. First operand 1387 states and 1860 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-13 21:08:20,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:20,844 INFO L93 Difference]: Finished difference Result 2110 states and 2798 transitions. [2022-07-13 21:08:20,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:08:20,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2022-07-13 21:08:20,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:20,851 INFO L225 Difference]: With dead ends: 2110 [2022-07-13 21:08:20,851 INFO L226 Difference]: Without dead ends: 1265 [2022-07-13 21:08:20,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:08:20,855 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 525 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:20,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 671 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:08:20,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2022-07-13 21:08:20,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1250. [2022-07-13 21:08:20,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1117 states have (on average 1.3294538943598926) internal successors, (1485), 1134 states have internal predecessors, (1485), 80 states have call successors, (80), 43 states have call predecessors, (80), 51 states have return successors, (115), 73 states have call predecessors, (115), 79 states have call successors, (115) [2022-07-13 21:08:20,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1680 transitions. [2022-07-13 21:08:20,935 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1680 transitions. Word has length 88 [2022-07-13 21:08:20,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:20,936 INFO L495 AbstractCegarLoop]: Abstraction has 1250 states and 1680 transitions. [2022-07-13 21:08:20,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-13 21:08:20,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1680 transitions. [2022-07-13 21:08:20,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-13 21:08:20,943 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:20,944 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:08:20,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 21:08:21,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:08:21,172 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:21,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:21,172 INFO L85 PathProgramCache]: Analyzing trace with hash -555075298, now seen corresponding path program 1 times [2022-07-13 21:08:21,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:21,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461166261] [2022-07-13 21:08:21,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:21,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:21,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:08:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:21,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:08:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:21,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 21:08:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:21,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 21:08:21,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:21,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 21:08:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:21,250 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-13 21:08:21,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:21,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461166261] [2022-07-13 21:08:21,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461166261] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:08:21,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462796651] [2022-07-13 21:08:21,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:21,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:08:21,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:08:21,252 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:08:21,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 21:08:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:21,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 21:08:21,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:08:21,400 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 21:08:21,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:08:21,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462796651] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:21,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:08:21,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-13 21:08:21,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816324367] [2022-07-13 21:08:21,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:21,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:08:21,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:21,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:08:21,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:08:21,403 INFO L87 Difference]: Start difference. First operand 1250 states and 1680 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-13 21:08:21,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:21,449 INFO L93 Difference]: Finished difference Result 1629 states and 2148 transitions. [2022-07-13 21:08:21,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:08:21,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2022-07-13 21:08:21,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:21,452 INFO L225 Difference]: With dead ends: 1629 [2022-07-13 21:08:21,452 INFO L226 Difference]: Without dead ends: 303 [2022-07-13 21:08:21,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:08:21,455 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 62 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:21,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1150 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:08:21,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-07-13 21:08:21,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2022-07-13 21:08:21,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 273 states have (on average 1.564102564102564) internal successors, (427), 274 states have internal predecessors, (427), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-13 21:08:21,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 473 transitions. [2022-07-13 21:08:21,466 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 473 transitions. Word has length 103 [2022-07-13 21:08:21,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:21,466 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 473 transitions. [2022-07-13 21:08:21,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-13 21:08:21,466 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 473 transitions. [2022-07-13 21:08:21,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:08:21,467 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:21,468 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] [2022-07-13 21:08:21,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 21:08:21,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:08:21,691 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:21,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:21,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1331621070, now seen corresponding path program 1 times [2022-07-13 21:08:21,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:21,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641098069] [2022-07-13 21:08:21,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:21,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:21,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:21,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:08:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:21,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:08:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:21,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:08:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:21,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:08:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:21,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:08:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:21,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:08:21,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:21,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641098069] [2022-07-13 21:08:21,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641098069] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:21,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:21,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:08:21,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309218682] [2022-07-13 21:08:21,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:21,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:08:21,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:21,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:08:21,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:08:21,820 INFO L87 Difference]: Start difference. First operand 303 states and 473 transitions. 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, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:08:22,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:22,797 INFO L93 Difference]: Finished difference Result 704 states and 1117 transitions. [2022-07-13 21:08:22,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 21:08:22,797 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, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:08:22,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:22,800 INFO L225 Difference]: With dead ends: 704 [2022-07-13 21:08:22,800 INFO L226 Difference]: Without dead ends: 412 [2022-07-13 21:08:22,801 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 [2022-07-13 21:08:22,802 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 801 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:22,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 833 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:08:22,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-07-13 21:08:22,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 303. [2022-07-13 21:08:22,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 273 states have (on average 1.5604395604395604) internal successors, (426), 274 states have internal predecessors, (426), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-13 21:08:22,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 472 transitions. [2022-07-13 21:08:22,818 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 472 transitions. Word has length 145 [2022-07-13 21:08:22,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:22,819 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 472 transitions. [2022-07-13 21:08:22,819 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, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:08:22,819 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 472 transitions. [2022-07-13 21:08:22,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:08:22,820 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:22,821 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] [2022-07-13 21:08:22,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 21:08:22,821 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:22,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:22,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1695087568, now seen corresponding path program 1 times [2022-07-13 21:08:22,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:22,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809566857] [2022-07-13 21:08:22,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:22,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:22,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:08:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:22,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:08:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:22,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:08:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:22,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:08:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:22,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:08:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:08:22,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:22,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809566857] [2022-07-13 21:08:22,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809566857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:22,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:22,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:08:22,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752450567] [2022-07-13 21:08:22,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:22,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:08:22,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:22,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:08:22,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:08:22,950 INFO L87 Difference]: Start difference. First operand 303 states and 472 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:08:24,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:24,919 INFO L93 Difference]: Finished difference Result 1103 states and 1759 transitions. [2022-07-13 21:08:24,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:08:24,919 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:08:24,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:24,923 INFO L225 Difference]: With dead ends: 1103 [2022-07-13 21:08:24,923 INFO L226 Difference]: Without dead ends: 818 [2022-07-13 21:08:24,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:08:24,925 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 1208 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:24,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1224 Valid, 1317 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 21:08:24,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-07-13 21:08:24,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 601. [2022-07-13 21:08:24,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 546 states have (on average 1.5732600732600732) internal successors, (859), 548 states have internal predecessors, (859), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-07-13 21:08:24,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 944 transitions. [2022-07-13 21:08:24,983 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 944 transitions. Word has length 145 [2022-07-13 21:08:24,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:24,984 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 944 transitions. [2022-07-13 21:08:24,984 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:08:24,985 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 944 transitions. [2022-07-13 21:08:24,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:08:24,986 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:24,986 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] [2022-07-13 21:08:24,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 21:08:24,986 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:24,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:24,987 INFO L85 PathProgramCache]: Analyzing trace with hash 47915956, now seen corresponding path program 1 times [2022-07-13 21:08:24,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:24,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052437378] [2022-07-13 21:08:24,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:24,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:25,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:08:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:25,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:08:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:25,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:08:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:25,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:08:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:25,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:08:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:25,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:08:25,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:25,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052437378] [2022-07-13 21:08:25,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052437378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:25,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:25,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:08:25,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209869130] [2022-07-13 21:08:25,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:25,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:08:25,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:25,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:08:25,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:08:25,126 INFO L87 Difference]: Start difference. First operand 601 states and 944 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:08:27,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:27,526 INFO L93 Difference]: Finished difference Result 1821 states and 2906 transitions. [2022-07-13 21:08:27,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:08:27,527 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:08:27,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:27,538 INFO L225 Difference]: With dead ends: 1821 [2022-07-13 21:08:27,539 INFO L226 Difference]: Without dead ends: 1238 [2022-07-13 21:08:27,541 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 [2022-07-13 21:08:27,541 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 1230 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 2284 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:27,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1246 Valid, 2284 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 21:08:27,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2022-07-13 21:08:27,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 878. [2022-07-13 21:08:27,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 798 states have (on average 1.5664160401002507) internal successors, (1250), 801 states have internal predecessors, (1250), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-07-13 21:08:27,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1373 transitions. [2022-07-13 21:08:27,602 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1373 transitions. Word has length 145 [2022-07-13 21:08:27,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:27,603 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1373 transitions. [2022-07-13 21:08:27,603 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:08:27,603 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1373 transitions. [2022-07-13 21:08:27,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:08:27,605 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:27,605 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] [2022-07-13 21:08:27,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 21:08:27,605 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:27,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:27,606 INFO L85 PathProgramCache]: Analyzing trace with hash 994953842, now seen corresponding path program 1 times [2022-07-13 21:08:27,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:27,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440237544] [2022-07-13 21:08:27,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:27,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:27,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:08:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:27,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:08:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:27,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:08:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:27,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:08:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:27,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:08:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:27,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:08:27,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:27,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440237544] [2022-07-13 21:08:27,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440237544] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:27,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:27,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:08:27,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338959029] [2022-07-13 21:08:27,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:27,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:08:27,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:27,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:08:27,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:08:27,754 INFO L87 Difference]: Start difference. First operand 878 states and 1373 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:08:30,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:30,087 INFO L93 Difference]: Finished difference Result 2878 states and 4583 transitions. [2022-07-13 21:08:30,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:08:30,088 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:08:30,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:30,099 INFO L225 Difference]: With dead ends: 2878 [2022-07-13 21:08:30,100 INFO L226 Difference]: Without dead ends: 2018 [2022-07-13 21:08:30,102 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 [2022-07-13 21:08:30,103 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 1224 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 2272 SdHoareTripleChecker+Invalid, 2511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:30,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 2272 Invalid, 2511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 21:08:30,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2022-07-13 21:08:30,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1436. [2022-07-13 21:08:30,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1306 states have (on average 1.5612557427258806) internal successors, (2039), 1311 states have internal predecessors, (2039), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-07-13 21:08:30,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2242 transitions. [2022-07-13 21:08:30,226 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2242 transitions. Word has length 145 [2022-07-13 21:08:30,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:30,226 INFO L495 AbstractCegarLoop]: Abstraction has 1436 states and 2242 transitions. [2022-07-13 21:08:30,227 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:08:30,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2242 transitions. [2022-07-13 21:08:30,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:08:30,229 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:30,229 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] [2022-07-13 21:08:30,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 21:08:30,229 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:30,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:30,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1055455056, now seen corresponding path program 1 times [2022-07-13 21:08:30,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:30,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018182558] [2022-07-13 21:08:30,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:30,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:30,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:08:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:30,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:08:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:30,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:08:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:30,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:08:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:30,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:08:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:30,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:08:30,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:30,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018182558] [2022-07-13 21:08:30,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018182558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:30,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:30,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:08:30,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477660322] [2022-07-13 21:08:30,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:30,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:08:30,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:30,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:08:30,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:08:30,347 INFO L87 Difference]: Start difference. First operand 1436 states and 2242 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:08:32,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:32,918 INFO L93 Difference]: Finished difference Result 4918 states and 7800 transitions. [2022-07-13 21:08:32,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:08:32,919 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:08:32,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:32,934 INFO L225 Difference]: With dead ends: 4918 [2022-07-13 21:08:32,934 INFO L226 Difference]: Without dead ends: 3500 [2022-07-13 21:08:32,938 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 [2022-07-13 21:08:32,939 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 1223 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 2427 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 2503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:32,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 2267 Invalid, 2503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2427 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 21:08:32,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3500 states. [2022-07-13 21:08:33,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3500 to 2553. [2022-07-13 21:08:33,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2323 states have (on average 1.557038312526905) internal successors, (3617), 2332 states have internal predecessors, (3617), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-07-13 21:08:33,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 3986 transitions. [2022-07-13 21:08:33,123 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 3986 transitions. Word has length 145 [2022-07-13 21:08:33,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:33,123 INFO L495 AbstractCegarLoop]: Abstraction has 2553 states and 3986 transitions. [2022-07-13 21:08:33,124 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:08:33,124 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 3986 transitions. [2022-07-13 21:08:33,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:08:33,127 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:33,127 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] [2022-07-13 21:08:33,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 21:08:33,128 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:33,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:33,128 INFO L85 PathProgramCache]: Analyzing trace with hash -567407950, now seen corresponding path program 1 times [2022-07-13 21:08:33,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:33,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663882548] [2022-07-13 21:08:33,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:33,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:33,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:08:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:33,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:08:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:33,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:08:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:33,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:08:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:33,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:08:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:33,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:08:33,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:33,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663882548] [2022-07-13 21:08:33,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663882548] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:33,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:33,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:08:33,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234579685] [2022-07-13 21:08:33,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:33,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:08:33,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:33,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:08:33,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:08:33,261 INFO L87 Difference]: Start difference. First operand 2553 states and 3986 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:08:34,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:34,467 INFO L93 Difference]: Finished difference Result 6054 states and 9605 transitions. [2022-07-13 21:08:34,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:08:34,468 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:08:34,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:34,486 INFO L225 Difference]: With dead ends: 6054 [2022-07-13 21:08:34,487 INFO L226 Difference]: Without dead ends: 3519 [2022-07-13 21:08:34,494 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 [2022-07-13 21:08:34,495 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 1005 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:34,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 1082 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 21:08:34,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3519 states. [2022-07-13 21:08:34,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3519 to 2553. [2022-07-13 21:08:34,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2323 states have (on average 1.5531640120533792) internal successors, (3608), 2332 states have internal predecessors, (3608), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-07-13 21:08:34,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 3977 transitions. [2022-07-13 21:08:34,729 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 3977 transitions. Word has length 145 [2022-07-13 21:08:34,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:34,729 INFO L495 AbstractCegarLoop]: Abstraction has 2553 states and 3977 transitions. [2022-07-13 21:08:34,730 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:08:34,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 3977 transitions. [2022-07-13 21:08:34,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:08:34,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:34,733 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] [2022-07-13 21:08:34,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 21:08:34,734 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:34,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:34,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1660043152, now seen corresponding path program 1 times [2022-07-13 21:08:34,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:34,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556718582] [2022-07-13 21:08:34,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:34,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:34,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:08:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:34,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:08:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:34,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:08:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:34,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:08:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:34,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:08:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:34,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:08:34,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:34,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556718582] [2022-07-13 21:08:34,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556718582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:34,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:34,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:08:34,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196197533] [2022-07-13 21:08:34,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:34,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:08:34,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:34,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:08:34,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:08:34,862 INFO L87 Difference]: Start difference. First operand 2553 states and 3977 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:08:36,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:36,237 INFO L93 Difference]: Finished difference Result 6044 states and 9558 transitions. [2022-07-13 21:08:36,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:08:36,238 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:08:36,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:36,255 INFO L225 Difference]: With dead ends: 6044 [2022-07-13 21:08:36,255 INFO L226 Difference]: Without dead ends: 3509 [2022-07-13 21:08:36,262 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 [2022-07-13 21:08:36,263 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 873 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:36,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 1234 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:08:36,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3509 states. [2022-07-13 21:08:36,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3509 to 2553. [2022-07-13 21:08:36,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2323 states have (on average 1.5492897115798536) internal successors, (3599), 2332 states have internal predecessors, (3599), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-07-13 21:08:36,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 3968 transitions. [2022-07-13 21:08:36,473 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 3968 transitions. Word has length 145 [2022-07-13 21:08:36,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:36,475 INFO L495 AbstractCegarLoop]: Abstraction has 2553 states and 3968 transitions. [2022-07-13 21:08:36,475 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:08:36,476 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 3968 transitions. [2022-07-13 21:08:36,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:08:36,479 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:36,479 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] [2022-07-13 21:08:36,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 21:08:36,479 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:36,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:36,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1352751858, now seen corresponding path program 1 times [2022-07-13 21:08:36,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:36,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037173594] [2022-07-13 21:08:36,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:36,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:36,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:08:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:36,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:08:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:36,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:08:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:36,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:08:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:36,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:08:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:36,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:08:36,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:36,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037173594] [2022-07-13 21:08:36,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037173594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:36,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:36,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:08:36,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351852907] [2022-07-13 21:08:36,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:36,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:08:36,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:36,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:08:36,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:08:36,630 INFO L87 Difference]: Start difference. First operand 2553 states and 3968 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:08:37,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:37,879 INFO L93 Difference]: Finished difference Result 6034 states and 9511 transitions. [2022-07-13 21:08:37,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:08:37,880 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:08:37,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:37,894 INFO L225 Difference]: With dead ends: 6034 [2022-07-13 21:08:37,894 INFO L226 Difference]: Without dead ends: 3499 [2022-07-13 21:08:37,900 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 [2022-07-13 21:08:37,901 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 1051 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:37,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1068 Valid, 1048 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:08:37,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3499 states. [2022-07-13 21:08:38,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3499 to 2553. [2022-07-13 21:08:38,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2323 states have (on average 1.545415411106328) internal successors, (3590), 2332 states have internal predecessors, (3590), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-07-13 21:08:38,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 3959 transitions. [2022-07-13 21:08:38,155 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 3959 transitions. Word has length 145 [2022-07-13 21:08:38,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:38,156 INFO L495 AbstractCegarLoop]: Abstraction has 2553 states and 3959 transitions. [2022-07-13 21:08:38,156 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:08:38,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 3959 transitions. [2022-07-13 21:08:38,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:08:38,159 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:38,159 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] [2022-07-13 21:08:38,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 21:08:38,159 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:38,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:38,160 INFO L85 PathProgramCache]: Analyzing trace with hash -489723856, now seen corresponding path program 1 times [2022-07-13 21:08:38,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:38,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070944980] [2022-07-13 21:08:38,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:38,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:38,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:08:38,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:38,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:08:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:38,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:08:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:38,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:08:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:38,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:08:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:38,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:08:38,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:38,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070944980] [2022-07-13 21:08:38,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070944980] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:38,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:38,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:08:38,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062039443] [2022-07-13 21:08:38,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:38,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:08:38,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:38,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:08:38,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:08:38,276 INFO L87 Difference]: Start difference. First operand 2553 states and 3959 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:08:40,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:40,838 INFO L93 Difference]: Finished difference Result 8967 states and 14058 transitions. [2022-07-13 21:08:40,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:08:40,839 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:08:40,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:40,872 INFO L225 Difference]: With dead ends: 8967 [2022-07-13 21:08:40,872 INFO L226 Difference]: Without dead ends: 6432 [2022-07-13 21:08:40,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:08:40,884 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 1201 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 2362 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 2244 SdHoareTripleChecker+Invalid, 2438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:40,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 2244 Invalid, 2438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2362 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 21:08:40,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6432 states. [2022-07-13 21:08:41,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6432 to 4821. [2022-07-13 21:08:41,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4821 states, 4391 states have (on average 1.5399681166021408) internal successors, (6762), 4408 states have internal predecessors, (6762), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-07-13 21:08:41,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4821 states to 4821 states and 7481 transitions. [2022-07-13 21:08:41,362 INFO L78 Accepts]: Start accepts. Automaton has 4821 states and 7481 transitions. Word has length 145 [2022-07-13 21:08:41,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:41,362 INFO L495 AbstractCegarLoop]: Abstraction has 4821 states and 7481 transitions. [2022-07-13 21:08:41,362 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:08:41,362 INFO L276 IsEmpty]: Start isEmpty. Operand 4821 states and 7481 transitions. [2022-07-13 21:08:41,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:08:41,366 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:41,366 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] [2022-07-13 21:08:41,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 21:08:41,367 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:41,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:41,367 INFO L85 PathProgramCache]: Analyzing trace with hash 2083240754, now seen corresponding path program 1 times [2022-07-13 21:08:41,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:41,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172523208] [2022-07-13 21:08:41,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:41,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:41,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:08:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:41,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:08:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:41,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:08:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:41,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:08:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:41,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:08:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:41,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:08:41,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:41,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172523208] [2022-07-13 21:08:41,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172523208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:41,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:41,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:08:41,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714879278] [2022-07-13 21:08:41,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:41,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:08:41,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:41,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:08:41,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:08:41,517 INFO L87 Difference]: Start difference. First operand 4821 states and 7481 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:08:42,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:42,850 INFO L93 Difference]: Finished difference Result 11286 states and 17750 transitions. [2022-07-13 21:08:42,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:08:42,851 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:08:42,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:42,869 INFO L225 Difference]: With dead ends: 11286 [2022-07-13 21:08:42,869 INFO L226 Difference]: Without dead ends: 6483 [2022-07-13 21:08:42,883 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 [2022-07-13 21:08:42,884 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 1003 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:42,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 1065 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 21:08:42,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6483 states. [2022-07-13 21:08:43,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6483 to 4821. [2022-07-13 21:08:43,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4821 states, 4391 states have (on average 1.5360965611478024) internal successors, (6745), 4408 states have internal predecessors, (6745), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-07-13 21:08:43,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4821 states to 4821 states and 7464 transitions. [2022-07-13 21:08:43,322 INFO L78 Accepts]: Start accepts. Automaton has 4821 states and 7464 transitions. Word has length 145 [2022-07-13 21:08:43,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:43,322 INFO L495 AbstractCegarLoop]: Abstraction has 4821 states and 7464 transitions. [2022-07-13 21:08:43,323 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:08:43,323 INFO L276 IsEmpty]: Start isEmpty. Operand 4821 states and 7464 transitions. [2022-07-13 21:08:43,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:08:43,327 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:43,327 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] [2022-07-13 21:08:43,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 21:08:43,327 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:43,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:43,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1750597616, now seen corresponding path program 1 times [2022-07-13 21:08:43,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:43,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608475104] [2022-07-13 21:08:43,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:43,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:43,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:08:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:43,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:08:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:43,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:08:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:43,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:08:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:43,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:08:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:43,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:08:43,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:43,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608475104] [2022-07-13 21:08:43,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608475104] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:43,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:43,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:08:43,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797767370] [2022-07-13 21:08:43,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:43,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:08:43,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:43,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:08:43,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:08:43,448 INFO L87 Difference]: Start difference. First operand 4821 states and 7464 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:08:46,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:46,889 INFO L93 Difference]: Finished difference Result 19061 states and 29752 transitions. [2022-07-13 21:08:46,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:08:46,889 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:08:46,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:46,935 INFO L225 Difference]: With dead ends: 19061 [2022-07-13 21:08:46,936 INFO L226 Difference]: Without dead ends: 14258 [2022-07-13 21:08:46,954 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 [2022-07-13 21:08:46,955 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 1521 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 2213 SdHoareTripleChecker+Invalid, 2398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:46,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 2213 Invalid, 2398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2314 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 21:08:46,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14258 states. [2022-07-13 21:08:47,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14258 to 9272. [2022-07-13 21:08:47,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9272 states, 8458 states have (on average 1.5340506029794279) internal successors, (12975), 8491 states have internal predecessors, (12975), 583 states have call successors, (583), 198 states have call predecessors, (583), 230 states have return successors, (858), 614 states have call predecessors, (858), 583 states have call successors, (858) [2022-07-13 21:08:47,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9272 states to 9272 states and 14416 transitions. [2022-07-13 21:08:47,766 INFO L78 Accepts]: Start accepts. Automaton has 9272 states and 14416 transitions. Word has length 145 [2022-07-13 21:08:47,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:47,767 INFO L495 AbstractCegarLoop]: Abstraction has 9272 states and 14416 transitions. [2022-07-13 21:08:47,767 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:08:47,767 INFO L276 IsEmpty]: Start isEmpty. Operand 9272 states and 14416 transitions. [2022-07-13 21:08:47,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:08:47,773 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:47,773 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] [2022-07-13 21:08:47,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 21:08:47,773 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:47,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:47,774 INFO L85 PathProgramCache]: Analyzing trace with hash -542483410, now seen corresponding path program 1 times [2022-07-13 21:08:47,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:47,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662065222] [2022-07-13 21:08:47,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:47,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:47,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:08:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:47,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:08:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:47,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:08:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:47,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:08:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:47,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:08:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:47,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:08:47,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:47,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662065222] [2022-07-13 21:08:47,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662065222] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:47,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:47,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:08:47,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800939928] [2022-07-13 21:08:47,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:47,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:08:47,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:47,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:08:47,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:08:47,889 INFO L87 Difference]: Start difference. First operand 9272 states and 14416 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:08:53,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:53,069 INFO L93 Difference]: Finished difference Result 36550 states and 57266 transitions. [2022-07-13 21:08:53,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:08:53,070 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:08:53,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:53,177 INFO L225 Difference]: With dead ends: 36550 [2022-07-13 21:08:53,177 INFO L226 Difference]: Without dead ends: 27296 [2022-07-13 21:08:53,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:08:53,209 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 1264 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 2686 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 2336 SdHoareTripleChecker+Invalid, 2767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:53,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1279 Valid, 2336 Invalid, 2767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2686 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 21:08:53,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27296 states. [2022-07-13 21:08:54,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27296 to 18233. [2022-07-13 21:08:54,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18233 states, 16667 states have (on average 1.5341093178136438) internal successors, (25569), 16732 states have internal predecessors, (25569), 1111 states have call successors, (1111), 390 states have call predecessors, (1111), 454 states have return successors, (1904), 1174 states have call predecessors, (1904), 1111 states have call successors, (1904) [2022-07-13 21:08:54,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18233 states to 18233 states and 28584 transitions. [2022-07-13 21:08:54,822 INFO L78 Accepts]: Start accepts. Automaton has 18233 states and 28584 transitions. Word has length 145 [2022-07-13 21:08:54,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:54,823 INFO L495 AbstractCegarLoop]: Abstraction has 18233 states and 28584 transitions. [2022-07-13 21:08:54,823 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:08:54,823 INFO L276 IsEmpty]: Start isEmpty. Operand 18233 states and 28584 transitions. [2022-07-13 21:08:54,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:08:54,832 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:54,832 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] [2022-07-13 21:08:54,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 21:08:54,833 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:54,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:54,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1184661552, now seen corresponding path program 1 times [2022-07-13 21:08:54,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:54,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839398512] [2022-07-13 21:08:54,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:54,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:54,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:08:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:54,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:08:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:54,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:08:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:54,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:08:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:54,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:08:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:54,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:08:54,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:54,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839398512] [2022-07-13 21:08:54,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839398512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:54,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:54,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:08:54,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220772769] [2022-07-13 21:08:54,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:54,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:08:54,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:54,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:08:54,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:08:54,943 INFO L87 Difference]: Start difference. First operand 18233 states and 28584 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:03,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:03,012 INFO L93 Difference]: Finished difference Result 71141 states and 112344 transitions. [2022-07-13 21:09:03,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:09:03,013 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:09:03,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:03,227 INFO L225 Difference]: With dead ends: 71141 [2022-07-13 21:09:03,227 INFO L226 Difference]: Without dead ends: 52926 [2022-07-13 21:09:03,286 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 [2022-07-13 21:09:03,287 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 1442 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 2299 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 2207 SdHoareTripleChecker+Invalid, 2383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:03,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 2207 Invalid, 2383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2299 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 21:09:03,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52926 states. [2022-07-13 21:09:06,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52926 to 36122. [2022-07-13 21:09:06,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36122 states, 33084 states have (on average 1.5350924918389555) internal successors, (50787), 33213 states have internal predecessors, (50787), 2135 states have call successors, (2135), 774 states have call predecessors, (2135), 902 states have return successors, (4450), 2262 states have call predecessors, (4450), 2135 states have call successors, (4450) [2022-07-13 21:09:06,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36122 states to 36122 states and 57372 transitions. [2022-07-13 21:09:06,744 INFO L78 Accepts]: Start accepts. Automaton has 36122 states and 57372 transitions. Word has length 145 [2022-07-13 21:09:06,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:06,745 INFO L495 AbstractCegarLoop]: Abstraction has 36122 states and 57372 transitions. [2022-07-13 21:09:06,745 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:06,745 INFO L276 IsEmpty]: Start isEmpty. Operand 36122 states and 57372 transitions. [2022-07-13 21:09:06,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:09:06,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:06,763 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] [2022-07-13 21:09:06,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 21:09:06,764 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:06,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:06,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1656017902, now seen corresponding path program 1 times [2022-07-13 21:09:06,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:06,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407829657] [2022-07-13 21:09:06,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:06,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:06,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:06,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:09:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:06,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:09:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:06,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:09:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:06,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:09:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:06,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:09:06,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:06,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407829657] [2022-07-13 21:09:06,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407829657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:06,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:06,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:09:06,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610478730] [2022-07-13 21:09:06,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:06,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:09:06,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:06,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:09:06,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:06,881 INFO L87 Difference]: Start difference. First operand 36122 states and 57372 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:21,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:21,152 INFO L93 Difference]: Finished difference Result 139140 states and 222558 transitions. [2022-07-13 21:09:21,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:09:21,152 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:09:21,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:21,569 INFO L225 Difference]: With dead ends: 139140 [2022-07-13 21:09:21,569 INFO L226 Difference]: Without dead ends: 103036 [2022-07-13 21:09:21,656 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 [2022-07-13 21:09:21,656 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 1242 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 2600 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 2681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:21,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1257 Valid, 2294 Invalid, 2681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2600 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 21:09:21,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103036 states. [2022-07-13 21:09:28,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103036 to 71835. [2022-07-13 21:09:28,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71835 states, 65917 states have (on average 1.5365535446091296) internal successors, (101285), 66174 states have internal predecessors, (101285), 4119 states have call successors, (4119), 1542 states have call predecessors, (4119), 1798 states have return successors, (10936), 4374 states have call predecessors, (10936), 4119 states have call successors, (10936) [2022-07-13 21:09:28,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71835 states to 71835 states and 116340 transitions. [2022-07-13 21:09:28,856 INFO L78 Accepts]: Start accepts. Automaton has 71835 states and 116340 transitions. Word has length 145 [2022-07-13 21:09:28,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:28,857 INFO L495 AbstractCegarLoop]: Abstraction has 71835 states and 116340 transitions. [2022-07-13 21:09:28,857 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:28,857 INFO L276 IsEmpty]: Start isEmpty. Operand 71835 states and 116340 transitions. [2022-07-13 21:09:28,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:09:28,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:28,890 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] [2022-07-13 21:09:28,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 21:09:28,890 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:28,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:28,891 INFO L85 PathProgramCache]: Analyzing trace with hash 8654960, now seen corresponding path program 1 times [2022-07-13 21:09:28,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:28,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923194442] [2022-07-13 21:09:28,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:28,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:28,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:28,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:09:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:28,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:09:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:28,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:09:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:29,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:09:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:29,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:09:29,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:29,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923194442] [2022-07-13 21:09:29,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923194442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:29,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:29,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:09:29,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631044578] [2022-07-13 21:09:29,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:29,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:09:29,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:29,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:09:29,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:29,006 INFO L87 Difference]: Start difference. First operand 71835 states and 116340 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:55,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:55,327 INFO L93 Difference]: Finished difference Result 272771 states and 445044 transitions. [2022-07-13 21:09:55,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:09:55,328 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:09:55,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:56,307 INFO L225 Difference]: With dead ends: 272771 [2022-07-13 21:09:56,307 INFO L226 Difference]: Without dead ends: 200954 [2022-07-13 21:09:56,489 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 [2022-07-13 21:09:56,490 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 1424 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 2181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:56,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1450 Valid, 1534 Invalid, 2181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 21:09:56,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200954 states. [2022-07-13 21:10:09,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200954 to 143132. [2022-07-13 21:10:09,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143132 states, 131582 states have (on average 1.5382575124257116) internal successors, (202407), 132095 states have internal predecessors, (202407), 7959 states have call successors, (7959), 3078 states have call predecessors, (7959), 3590 states have return successors, (28154), 8470 states have call predecessors, (28154), 7959 states have call successors, (28154) [2022-07-13 21:10:10,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143132 states to 143132 states and 238520 transitions. [2022-07-13 21:10:10,551 INFO L78 Accepts]: Start accepts. Automaton has 143132 states and 238520 transitions. Word has length 145 [2022-07-13 21:10:10,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:10:10,551 INFO L495 AbstractCegarLoop]: Abstraction has 143132 states and 238520 transitions. [2022-07-13 21:10:10,552 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:10:10,552 INFO L276 IsEmpty]: Start isEmpty. Operand 143132 states and 238520 transitions. [2022-07-13 21:10:10,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:10:10,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:10:10,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:10:10,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 21:10:10,623 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:10:10,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:10:10,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2122695762, now seen corresponding path program 1 times [2022-07-13 21:10:10,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:10:10,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019834993] [2022-07-13 21:10:10,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:10:10,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:10:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:10,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:10:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:10,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:10:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:10,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:10:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:10,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:10:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:10,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:10:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:10,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:10:10,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:10:10,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019834993] [2022-07-13 21:10:10,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019834993] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:10:10,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:10:10,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:10:10,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140942839] [2022-07-13 21:10:10,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:10:10,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:10:10,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:10:10,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:10:10,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:10:10,760 INFO L87 Difference]: Start difference. First operand 143132 states and 238520 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)