./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.13.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/systemc/token_ring.13.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 1b2c6a3c4af8091017033117c21d8fbc40cee2009788b890a114045d77587077 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 17:40:13,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 17:40:13,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 17:40:13,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 17:40:13,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 17:40:13,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 17:40:13,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 17:40:13,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 17:40:13,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 17:40:13,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 17:40:13,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 17:40:13,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 17:40:13,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 17:40:13,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 17:40:13,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 17:40:13,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 17:40:13,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 17:40:13,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 17:40:13,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 17:40:13,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 17:40:13,697 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 17:40:13,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 17:40:13,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 17:40:13,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 17:40:13,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 17:40:13,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 17:40:13,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 17:40:13,711 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 17:40:13,712 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 17:40:13,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 17:40:13,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 17:40:13,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 17:40:13,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 17:40:13,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 17:40:13,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 17:40:13,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 17:40:13,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 17:40:13,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 17:40:13,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 17:40:13,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 17:40:13,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 17:40:13,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 17:40:13,723 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 17:40:13,749 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 17:40:13,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 17:40:13,749 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 17:40:13,750 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 17:40:13,750 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 17:40:13,750 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 17:40:13,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 17:40:13,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 17:40:13,751 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 17:40:13,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 17:40:13,752 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 17:40:13,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 17:40:13,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 17:40:13,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 17:40:13,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 17:40:13,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 17:40:13,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 17:40:13,753 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 17:40:13,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 17:40:13,754 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 17:40:13,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 17:40:13,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 17:40:13,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 17:40:13,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 17:40:13,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:40:13,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 17:40:13,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 17:40:13,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 17:40:13,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 17:40:13,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 17:40:13,756 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 17:40:13,756 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 17:40:13,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 17:40:13,756 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b2c6a3c4af8091017033117c21d8fbc40cee2009788b890a114045d77587077 [2022-07-19 17:40:13,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 17:40:13,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 17:40:13,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 17:40:13,984 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 17:40:13,985 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 17:40:13,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.13.cil-1.c [2022-07-19 17:40:14,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/644974ba9/2f102a2effc842c287d3d81c4a831509/FLAGf38471646 [2022-07-19 17:40:14,479 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 17:40:14,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.13.cil-1.c [2022-07-19 17:40:14,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/644974ba9/2f102a2effc842c287d3d81c4a831509/FLAGf38471646 [2022-07-19 17:40:14,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/644974ba9/2f102a2effc842c287d3d81c4a831509 [2022-07-19 17:40:14,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 17:40:14,514 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 17:40:14,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 17:40:14,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 17:40:14,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 17:40:14,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:40:14" (1/1) ... [2022-07-19 17:40:14,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f0e0f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:14, skipping insertion in model container [2022-07-19 17:40:14,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:40:14" (1/1) ... [2022-07-19 17:40:14,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 17:40:14,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 17:40:14,707 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/systemc/token_ring.13.cil-1.c[671,684] [2022-07-19 17:40:14,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:40:14,880 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 17:40:14,891 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/systemc/token_ring.13.cil-1.c[671,684] [2022-07-19 17:40:14,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:40:14,945 INFO L208 MainTranslator]: Completed translation [2022-07-19 17:40:14,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:14 WrapperNode [2022-07-19 17:40:14,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 17:40:14,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 17:40:14,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 17:40:14,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 17:40:14,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:14" (1/1) ... [2022-07-19 17:40:14,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:14" (1/1) ... [2022-07-19 17:40:15,012 INFO L137 Inliner]: procedures = 54, calls = 71, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 916 [2022-07-19 17:40:15,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 17:40:15,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 17:40:15,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 17:40:15,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 17:40:15,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:14" (1/1) ... [2022-07-19 17:40:15,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:14" (1/1) ... [2022-07-19 17:40:15,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:14" (1/1) ... [2022-07-19 17:40:15,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:14" (1/1) ... [2022-07-19 17:40:15,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:14" (1/1) ... [2022-07-19 17:40:15,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:14" (1/1) ... [2022-07-19 17:40:15,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:14" (1/1) ... [2022-07-19 17:40:15,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 17:40:15,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 17:40:15,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 17:40:15,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 17:40:15,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:14" (1/1) ... [2022-07-19 17:40:15,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:40:15,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:40:15,137 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) [2022-07-19 17:40:15,212 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 [2022-07-19 17:40:15,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 17:40:15,226 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-19 17:40:15,226 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-19 17:40:15,227 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 17:40:15,227 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 17:40:15,227 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-19 17:40:15,227 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-19 17:40:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-19 17:40:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-19 17:40:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-19 17:40:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-19 17:40:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-19 17:40:15,232 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-19 17:40:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-19 17:40:15,232 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-19 17:40:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 17:40:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 17:40:15,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 17:40:15,332 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 17:40:15,334 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 17:40:15,938 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 17:40:15,947 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 17:40:15,947 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-19 17:40:15,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:40:15 BoogieIcfgContainer [2022-07-19 17:40:15,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 17:40:15,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 17:40:15,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 17:40:15,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 17:40:15,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 05:40:14" (1/3) ... [2022-07-19 17:40:15,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b3a87c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:40:15, skipping insertion in model container [2022-07-19 17:40:15,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:14" (2/3) ... [2022-07-19 17:40:15,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b3a87c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:40:15, skipping insertion in model container [2022-07-19 17:40:15,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:40:15" (3/3) ... [2022-07-19 17:40:15,959 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.13.cil-1.c [2022-07-19 17:40:15,970 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 17:40:15,971 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 17:40:16,092 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 17:40:16,101 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@33d1a228, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1f89bb39 [2022-07-19 17:40:16,101 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 17:40:16,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 415 states, 377 states have (on average 1.6710875331564987) internal successors, (630), 381 states have internal predecessors, (630), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-19 17:40:16,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-19 17:40:16,128 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:16,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:16,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:16,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:16,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1613183498, now seen corresponding path program 1 times [2022-07-19 17:40:16,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:16,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375604511] [2022-07-19 17:40:16,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:16,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:16,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:16,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:40:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:16,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:40:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:16,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 17:40:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:16,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 17:40:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:16,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:16,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:16,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375604511] [2022-07-19 17:40:16,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375604511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:16,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:16,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 17:40:16,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545602836] [2022-07-19 17:40:16,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:16,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:40:16,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:16,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:40:16,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 17:40:16,644 INFO L87 Difference]: Start difference. First operand has 415 states, 377 states have (on average 1.6710875331564987) internal successors, (630), 381 states have internal predecessors, (630), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:18,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:18,009 INFO L93 Difference]: Finished difference Result 969 states and 1619 transitions. [2022-07-19 17:40:18,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 17:40:18,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-19 17:40:18,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:18,025 INFO L225 Difference]: With dead ends: 969 [2022-07-19 17:40:18,026 INFO L226 Difference]: Without dead ends: 562 [2022-07-19 17:40:18,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:40:18,032 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 1117 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:18,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 1159 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 17:40:18,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-07-19 17:40:18,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 409. [2022-07-19 17:40:18,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 373 states have (on average 1.584450402144772) internal successors, (591), 375 states have internal predecessors, (591), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-19 17:40:18,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 647 transitions. [2022-07-19 17:40:18,103 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 647 transitions. Word has length 189 [2022-07-19 17:40:18,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:18,103 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 647 transitions. [2022-07-19 17:40:18,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:18,104 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 647 transitions. [2022-07-19 17:40:18,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-19 17:40:18,107 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:18,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:18,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 17:40:18,108 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:18,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:18,108 INFO L85 PathProgramCache]: Analyzing trace with hash 2076009016, now seen corresponding path program 1 times [2022-07-19 17:40:18,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:18,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835034739] [2022-07-19 17:40:18,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:18,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:18,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:18,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:40:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:18,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:40:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:18,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 17:40:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:18,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 17:40:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:18,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:18,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:18,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835034739] [2022-07-19 17:40:18,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835034739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:18,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:18,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:40:18,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992041161] [2022-07-19 17:40:18,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:18,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:40:18,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:18,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:40:18,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:40:18,279 INFO L87 Difference]: Start difference. First operand 409 states and 647 transitions. Second operand has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:20,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:20,741 INFO L93 Difference]: Finished difference Result 1511 states and 2438 transitions. [2022-07-19 17:40:20,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 17:40:20,742 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-19 17:40:20,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:20,748 INFO L225 Difference]: With dead ends: 1511 [2022-07-19 17:40:20,749 INFO L226 Difference]: Without dead ends: 1123 [2022-07-19 17:40:20,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-19 17:40:20,754 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 1684 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 2165 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1704 SdHoareTripleChecker+Valid, 1815 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:20,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1704 Valid, 1815 Invalid, 2293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2165 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 17:40:20,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2022-07-19 17:40:20,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 816. [2022-07-19 17:40:20,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 751 states have (on average 1.5952063914780292) internal successors, (1198), 754 states have internal predecessors, (1198), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2022-07-19 17:40:20,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1301 transitions. [2022-07-19 17:40:20,823 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1301 transitions. Word has length 189 [2022-07-19 17:40:20,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:20,825 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1301 transitions. [2022-07-19 17:40:20,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:20,825 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1301 transitions. [2022-07-19 17:40:20,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-19 17:40:20,828 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:20,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:20,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 17:40:20,828 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:20,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:20,829 INFO L85 PathProgramCache]: Analyzing trace with hash 228982580, now seen corresponding path program 1 times [2022-07-19 17:40:20,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:20,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40655383] [2022-07-19 17:40:20,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:20,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:20,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:20,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:40:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:20,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:40:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:20,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 17:40:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:20,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 17:40:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:20,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:20,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:20,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40655383] [2022-07-19 17:40:20,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40655383] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:20,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:20,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:40:20,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123594837] [2022-07-19 17:40:20,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:20,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:40:20,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:20,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:40:20,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:40:20,990 INFO L87 Difference]: Start difference. First operand 816 states and 1301 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:24,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:24,235 INFO L93 Difference]: Finished difference Result 2499 states and 4041 transitions. [2022-07-19 17:40:24,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:40:24,237 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-19 17:40:24,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:24,245 INFO L225 Difference]: With dead ends: 2499 [2022-07-19 17:40:24,259 INFO L226 Difference]: Without dead ends: 1704 [2022-07-19 17:40:24,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:40:24,269 INFO L413 NwaCegarLoop]: 1103 mSDtfsCounter, 1720 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 3367 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1740 SdHoareTripleChecker+Valid, 3186 SdHoareTripleChecker+Invalid, 3453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:24,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1740 Valid, 3186 Invalid, 3453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 3367 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-19 17:40:24,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2022-07-19 17:40:24,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1194. [2022-07-19 17:40:24,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 1100 states have (on average 1.5881818181818181) internal successors, (1747), 1104 states have internal predecessors, (1747), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2022-07-19 17:40:24,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1896 transitions. [2022-07-19 17:40:24,332 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1896 transitions. Word has length 189 [2022-07-19 17:40:24,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:24,332 INFO L495 AbstractCegarLoop]: Abstraction has 1194 states and 1896 transitions. [2022-07-19 17:40:24,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:24,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1896 transitions. [2022-07-19 17:40:24,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-19 17:40:24,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:24,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:24,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 17:40:24,335 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:24,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:24,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1694267850, now seen corresponding path program 1 times [2022-07-19 17:40:24,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:24,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408580685] [2022-07-19 17:40:24,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:24,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:24,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:24,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:40:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:24,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:40:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:24,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 17:40:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:24,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 17:40:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:24,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:24,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408580685] [2022-07-19 17:40:24,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408580685] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:24,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:24,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:40:24,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196245831] [2022-07-19 17:40:24,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:24,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:40:24,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:24,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:40:24,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:40:24,488 INFO L87 Difference]: Start difference. First operand 1194 states and 1896 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:27,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:27,512 INFO L93 Difference]: Finished difference Result 3955 states and 6384 transitions. [2022-07-19 17:40:27,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:40:27,512 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-19 17:40:27,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:27,523 INFO L225 Difference]: With dead ends: 3955 [2022-07-19 17:40:27,523 INFO L226 Difference]: Without dead ends: 2782 [2022-07-19 17:40:27,527 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 [2022-07-19 17:40:27,528 INFO L413 NwaCegarLoop]: 1091 mSDtfsCounter, 1714 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 3356 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 3174 SdHoareTripleChecker+Invalid, 3444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:27,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1734 Valid, 3174 Invalid, 3444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3356 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 17:40:27,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2022-07-19 17:40:27,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 1954. [2022-07-19 17:40:27,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1802 states have (on average 1.5826859045504995) internal successors, (2852), 1808 states have internal predecessors, (2852), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2022-07-19 17:40:27,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 3097 transitions. [2022-07-19 17:40:27,656 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 3097 transitions. Word has length 189 [2022-07-19 17:40:27,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:27,657 INFO L495 AbstractCegarLoop]: Abstraction has 1954 states and 3097 transitions. [2022-07-19 17:40:27,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:27,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 3097 transitions. [2022-07-19 17:40:27,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-19 17:40:27,663 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:27,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:27,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 17:40:27,664 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:27,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:27,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1195711048, now seen corresponding path program 1 times [2022-07-19 17:40:27,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:27,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43575903] [2022-07-19 17:40:27,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:27,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:27,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:27,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:40:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:27,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:40:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:27,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 17:40:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:27,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 17:40:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:27,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:27,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:27,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43575903] [2022-07-19 17:40:27,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43575903] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:27,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:27,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:40:27,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245506783] [2022-07-19 17:40:27,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:27,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:40:27,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:27,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:40:27,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:40:27,823 INFO L87 Difference]: Start difference. First operand 1954 states and 3097 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:31,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:31,131 INFO L93 Difference]: Finished difference Result 6761 states and 10869 transitions. [2022-07-19 17:40:31,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:40:31,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-19 17:40:31,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:31,147 INFO L225 Difference]: With dead ends: 6761 [2022-07-19 17:40:31,147 INFO L226 Difference]: Without dead ends: 4828 [2022-07-19 17:40:31,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:40:31,152 INFO L413 NwaCegarLoop]: 1086 mSDtfsCounter, 1713 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 3348 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 3169 SdHoareTripleChecker+Invalid, 3436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:31,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1733 Valid, 3169 Invalid, 3436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3348 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-19 17:40:31,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4828 states. [2022-07-19 17:40:31,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4828 to 3475. [2022-07-19 17:40:31,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3475 states, 3207 states have (on average 1.5784222014343623) internal successors, (5062), 3217 states have internal predecessors, (5062), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2022-07-19 17:40:31,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3475 states to 3475 states and 5505 transitions. [2022-07-19 17:40:31,347 INFO L78 Accepts]: Start accepts. Automaton has 3475 states and 5505 transitions. Word has length 189 [2022-07-19 17:40:31,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:31,348 INFO L495 AbstractCegarLoop]: Abstraction has 3475 states and 5505 transitions. [2022-07-19 17:40:31,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:31,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3475 states and 5505 transitions. [2022-07-19 17:40:31,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-19 17:40:31,354 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:31,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:31,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 17:40:31,355 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:31,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:31,355 INFO L85 PathProgramCache]: Analyzing trace with hash -625439242, now seen corresponding path program 1 times [2022-07-19 17:40:31,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:31,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191869219] [2022-07-19 17:40:31,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:31,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:31,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:31,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:40:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:31,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:40:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:31,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 17:40:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:31,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 17:40:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:31,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:31,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:31,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191869219] [2022-07-19 17:40:31,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191869219] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:31,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:31,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:40:31,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726155232] [2022-07-19 17:40:31,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:31,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:40:31,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:31,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:40:31,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:40:31,495 INFO L87 Difference]: Start difference. First operand 3475 states and 5505 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:34,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:34,949 INFO L93 Difference]: Finished difference Result 12372 states and 19855 transitions. [2022-07-19 17:40:34,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:40:34,950 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-19 17:40:34,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:34,987 INFO L225 Difference]: With dead ends: 12372 [2022-07-19 17:40:35,003 INFO L226 Difference]: Without dead ends: 8918 [2022-07-19 17:40:35,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:40:35,028 INFO L413 NwaCegarLoop]: 1081 mSDtfsCounter, 1712 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 3340 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 3164 SdHoareTripleChecker+Invalid, 3428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:35,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1732 Valid, 3164 Invalid, 3428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3340 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 17:40:35,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8918 states. [2022-07-19 17:40:35,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8918 to 6524. [2022-07-19 17:40:35,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6524 states, 6024 states have (on average 1.5756972111553784) internal successors, (9492), 6042 states have internal predecessors, (9492), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2022-07-19 17:40:35,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6524 states to 6524 states and 10349 transitions. [2022-07-19 17:40:35,367 INFO L78 Accepts]: Start accepts. Automaton has 6524 states and 10349 transitions. Word has length 189 [2022-07-19 17:40:35,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:35,367 INFO L495 AbstractCegarLoop]: Abstraction has 6524 states and 10349 transitions. [2022-07-19 17:40:35,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:35,367 INFO L276 IsEmpty]: Start isEmpty. Operand 6524 states and 10349 transitions. [2022-07-19 17:40:35,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-19 17:40:35,371 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:35,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:35,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 17:40:35,371 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:35,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:35,372 INFO L85 PathProgramCache]: Analyzing trace with hash 778429944, now seen corresponding path program 1 times [2022-07-19 17:40:35,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:35,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547315999] [2022-07-19 17:40:35,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:35,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:35,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:35,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:40:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:35,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:40:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:35,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 17:40:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:35,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 17:40:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:35,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:35,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:35,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547315999] [2022-07-19 17:40:35,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547315999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:35,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:35,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:40:35,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870251581] [2022-07-19 17:40:35,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:35,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:40:35,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:35,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:40:35,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:40:35,505 INFO L87 Difference]: Start difference. First operand 6524 states and 10349 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:38,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:38,966 INFO L93 Difference]: Finished difference Result 23595 states and 37889 transitions. [2022-07-19 17:40:38,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:40:38,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-19 17:40:38,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:39,053 INFO L225 Difference]: With dead ends: 23595 [2022-07-19 17:40:39,054 INFO L226 Difference]: Without dead ends: 17092 [2022-07-19 17:40:39,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:40:39,076 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 1823 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 2965 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1843 SdHoareTripleChecker+Valid, 2168 SdHoareTripleChecker+Invalid, 3095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:39,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1843 Valid, 2168 Invalid, 3095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2965 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 17:40:39,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17092 states. [2022-07-19 17:40:39,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17092 to 12637. [2022-07-19 17:40:39,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12637 states, 11673 states have (on average 1.5740597961106828) internal successors, (18374), 11707 states have internal predecessors, (18374), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2022-07-19 17:40:39,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12637 states to 12637 states and 20113 transitions. [2022-07-19 17:40:39,780 INFO L78 Accepts]: Start accepts. Automaton has 12637 states and 20113 transitions. Word has length 189 [2022-07-19 17:40:39,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:39,781 INFO L495 AbstractCegarLoop]: Abstraction has 12637 states and 20113 transitions. [2022-07-19 17:40:39,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:39,781 INFO L276 IsEmpty]: Start isEmpty. Operand 12637 states and 20113 transitions. [2022-07-19 17:40:39,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-19 17:40:39,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:39,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:39,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 17:40:39,789 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:39,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:39,790 INFO L85 PathProgramCache]: Analyzing trace with hash -7567946, now seen corresponding path program 1 times [2022-07-19 17:40:39,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:39,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321623648] [2022-07-19 17:40:39,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:39,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:39,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:39,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:40:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:39,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:40:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:39,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 17:40:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:39,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 17:40:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:39,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:39,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:39,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321623648] [2022-07-19 17:40:39,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321623648] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:39,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:39,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:40:39,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791698425] [2022-07-19 17:40:39,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:39,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:40:39,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:39,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:40:39,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:40:39,926 INFO L87 Difference]: Start difference. First operand 12637 states and 20113 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:44,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:44,804 INFO L93 Difference]: Finished difference Result 46042 states and 74151 transitions. [2022-07-19 17:40:44,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:40:44,804 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-19 17:40:44,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:44,962 INFO L225 Difference]: With dead ends: 46042 [2022-07-19 17:40:44,962 INFO L226 Difference]: Without dead ends: 33426 [2022-07-19 17:40:45,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:40:45,005 INFO L413 NwaCegarLoop]: 1071 mSDtfsCounter, 1710 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 3324 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 3154 SdHoareTripleChecker+Invalid, 3412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:45,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 3154 Invalid, 3412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3324 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 17:40:45,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33426 states. [2022-07-19 17:40:46,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33426 to 24894. [2022-07-19 17:40:46,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24894 states, 23002 states have (on average 1.5730806016868097) internal successors, (36184), 23068 states have internal predecessors, (36184), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2022-07-19 17:40:46,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24894 states to 24894 states and 39849 transitions. [2022-07-19 17:40:46,591 INFO L78 Accepts]: Start accepts. Automaton has 24894 states and 39849 transitions. Word has length 189 [2022-07-19 17:40:46,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:46,592 INFO L495 AbstractCegarLoop]: Abstraction has 24894 states and 39849 transitions. [2022-07-19 17:40:46,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:46,598 INFO L276 IsEmpty]: Start isEmpty. Operand 24894 states and 39849 transitions. [2022-07-19 17:40:46,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-19 17:40:46,612 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:46,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:46,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 17:40:46,612 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:46,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:46,613 INFO L85 PathProgramCache]: Analyzing trace with hash 659813944, now seen corresponding path program 1 times [2022-07-19 17:40:46,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:46,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762422755] [2022-07-19 17:40:46,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:46,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:46,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:46,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:40:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:46,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:40:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:46,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 17:40:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:46,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 17:40:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:46,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:46,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:46,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762422755] [2022-07-19 17:40:46,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762422755] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:46,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:46,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:40:46,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575525042] [2022-07-19 17:40:46,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:46,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:40:46,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:46,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:40:46,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:40:46,734 INFO L87 Difference]: Start difference. First operand 24894 states and 39849 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:53,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:53,906 INFO L93 Difference]: Finished difference Result 90937 states and 147277 transitions. [2022-07-19 17:40:53,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:40:53,906 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-19 17:40:53,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:54,341 INFO L225 Difference]: With dead ends: 90937 [2022-07-19 17:40:54,355 INFO L226 Difference]: Without dead ends: 66064 [2022-07-19 17:40:54,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:40:54,439 INFO L413 NwaCegarLoop]: 1066 mSDtfsCounter, 1709 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 3316 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1729 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 3404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:54,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1729 Valid, 3149 Invalid, 3404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3316 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 17:40:54,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66064 states. [2022-07-19 17:40:57,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66064 to 49471. [2022-07-19 17:40:57,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49471 states, 45723 states have (on average 1.5724689980972377) internal successors, (71898), 45853 states have internal predecessors, (71898), 2845 states have call successors, (2845), 775 states have call predecessors, (2845), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2022-07-19 17:40:57,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49471 states to 49471 states and 79901 transitions. [2022-07-19 17:40:57,568 INFO L78 Accepts]: Start accepts. Automaton has 49471 states and 79901 transitions. Word has length 189 [2022-07-19 17:40:57,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:57,568 INFO L495 AbstractCegarLoop]: Abstraction has 49471 states and 79901 transitions. [2022-07-19 17:40:57,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:57,569 INFO L276 IsEmpty]: Start isEmpty. Operand 49471 states and 79901 transitions. [2022-07-19 17:40:57,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-19 17:40:57,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:57,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:57,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 17:40:57,592 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:57,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:57,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1535414922, now seen corresponding path program 1 times [2022-07-19 17:40:57,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:57,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382241898] [2022-07-19 17:40:57,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:57,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:57,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:57,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:40:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:57,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:40:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:57,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 17:40:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:57,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 17:40:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:57,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:57,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:57,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382241898] [2022-07-19 17:40:57,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382241898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:57,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:57,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:40:57,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711695358] [2022-07-19 17:40:57,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:57,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:40:57,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:57,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:40:57,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:40:57,720 INFO L87 Difference]: Start difference. First operand 49471 states and 79901 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:04,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:04,196 INFO L93 Difference]: Finished difference Result 116675 states and 191656 transitions. [2022-07-19 17:41:04,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:41:04,197 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-19 17:41:04,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:41:04,463 INFO L225 Difference]: With dead ends: 116675 [2022-07-19 17:41:04,463 INFO L226 Difference]: Without dead ends: 67225 [2022-07-19 17:41:04,580 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 [2022-07-19 17:41:04,580 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 1223 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 17:41:04,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1244 Valid, 1715 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1572 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 17:41:04,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67225 states. [2022-07-19 17:41:07,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67225 to 49471. [2022-07-19 17:41:07,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49471 states, 45723 states have (on average 1.5696476609146381) internal successors, (71769), 45853 states have internal predecessors, (71769), 2845 states have call successors, (2845), 775 states have call predecessors, (2845), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2022-07-19 17:41:08,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49471 states to 49471 states and 79772 transitions. [2022-07-19 17:41:08,077 INFO L78 Accepts]: Start accepts. Automaton has 49471 states and 79772 transitions. Word has length 189 [2022-07-19 17:41:08,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:41:08,077 INFO L495 AbstractCegarLoop]: Abstraction has 49471 states and 79772 transitions. [2022-07-19 17:41:08,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:08,078 INFO L276 IsEmpty]: Start isEmpty. Operand 49471 states and 79772 transitions. [2022-07-19 17:41:08,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-19 17:41:08,100 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:08,100 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:41:08,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 17:41:08,100 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:08,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:08,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1190586760, now seen corresponding path program 1 times [2022-07-19 17:41:08,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:08,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266945883] [2022-07-19 17:41:08,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:08,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:08,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:08,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:41:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:08,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:41:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:08,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 17:41:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:08,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 17:41:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:08,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:08,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:08,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266945883] [2022-07-19 17:41:08,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266945883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:08,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:08,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:41:08,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884317209] [2022-07-19 17:41:08,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:08,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:41:08,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:08,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:41:08,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:41:08,232 INFO L87 Difference]: Start difference. First operand 49471 states and 79772 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:20,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:20,243 INFO L93 Difference]: Finished difference Result 180468 states and 294215 transitions. [2022-07-19 17:41:20,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:41:20,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-19 17:41:20,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:41:20,747 INFO L225 Difference]: With dead ends: 180468 [2022-07-19 17:41:20,748 INFO L226 Difference]: Without dead ends: 131018 [2022-07-19 17:41:20,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:41:20,908 INFO L413 NwaCegarLoop]: 1049 mSDtfsCounter, 1700 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 3276 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 3132 SdHoareTripleChecker+Invalid, 3367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 17:41:20,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1720 Valid, 3132 Invalid, 3367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 3276 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 17:41:21,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131018 states. [2022-07-19 17:41:27,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131018 to 99010. [2022-07-19 17:41:27,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99010 states, 91550 states have (on average 1.5690551611141452) internal successors, (143647), 91808 states have internal predecessors, (143647), 5661 states have call successors, (5661), 1543 states have call predecessors, (5661), 1798 states have return successors, (12476), 5914 states have call predecessors, (12476), 5659 states have call successors, (12476) [2022-07-19 17:41:27,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99010 states to 99010 states and 161784 transitions. [2022-07-19 17:41:27,939 INFO L78 Accepts]: Start accepts. Automaton has 99010 states and 161784 transitions. Word has length 189 [2022-07-19 17:41:27,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:41:27,940 INFO L495 AbstractCegarLoop]: Abstraction has 99010 states and 161784 transitions. [2022-07-19 17:41:27,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:27,941 INFO L276 IsEmpty]: Start isEmpty. Operand 99010 states and 161784 transitions. [2022-07-19 17:41:27,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-19 17:41:27,995 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:27,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:41:27,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 17:41:27,996 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:27,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:27,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1334908922, now seen corresponding path program 1 times [2022-07-19 17:41:27,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:27,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289873056] [2022-07-19 17:41:27,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:27,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:28,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:28,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:41:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:28,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:41:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:28,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 17:41:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:28,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 17:41:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:28,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:28,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:28,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289873056] [2022-07-19 17:41:28,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289873056] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:28,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:28,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:41:28,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108462897] [2022-07-19 17:41:28,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:28,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:41:28,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:28,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:41:28,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:41:28,149 INFO L87 Difference]: Start difference. First operand 99010 states and 161784 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:51,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:51,397 INFO L93 Difference]: Finished difference Result 360053 states and 595297 transitions. [2022-07-19 17:41:51,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:41:51,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-19 17:41:51,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted.