./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.14.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.14.cil.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 b4ef8e9ed2cd06e3f1b2681e4efb1f48663612c7770f819d08e3f1f515d36787 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:40:22,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:40:22,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:40:22,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:40:22,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:40:22,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:40:22,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:40:22,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:40:22,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:40:22,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:40:22,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:40:22,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:40:22,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:40:22,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:40:22,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:40:22,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:40:22,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:40:22,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:40:22,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:40:22,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:40:22,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:40:22,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:40:22,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:40:22,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:40:22,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:40:22,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:40:22,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:40:22,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:40:22,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:40:22,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:40:22,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:40:22,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:40:22,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:40:22,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:40:22,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:40:22,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:40:22,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:40:22,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:40:22,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:40:22,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:40:22,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:40:22,472 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 12:40:22,487 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:40:22,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:40:22,488 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:40:22,488 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:40:22,488 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:40:22,488 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:40:22,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:40:22,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:40:22,489 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:40:22,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:40:22,490 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:40:22,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 12:40:22,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:40:22,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:40:22,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:40:22,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:40:22,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:40:22,491 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:40:22,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:40:22,491 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:40:22,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:40:22,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:40:22,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:40:22,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:40:22,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:40:22,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:40:22,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:40:22,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:40:22,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 12:40:22,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 12:40:22,494 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:40:22,494 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:40:22,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:40:22,494 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:40:22,495 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4ef8e9ed2cd06e3f1b2681e4efb1f48663612c7770f819d08e3f1f515d36787 [2021-12-22 12:40:22,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:40:22,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:40:22,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:40:22,678 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:40:22,678 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:40:22,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.14.cil.c [2021-12-22 12:40:22,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/463791346/929ea65bfeba438e8d5e1f1910c640d7/FLAG2de623a90 [2021-12-22 12:40:23,401 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:40:23,401 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.14.cil.c [2021-12-22 12:40:23,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/463791346/929ea65bfeba438e8d5e1f1910c640d7/FLAG2de623a90 [2021-12-22 12:40:23,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/463791346/929ea65bfeba438e8d5e1f1910c640d7 [2021-12-22 12:40:23,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:40:23,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:40:23,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:40:23,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:40:23,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:40:23,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:40:23" (1/1) ... [2021-12-22 12:40:23,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d2f1cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:40:23, skipping insertion in model container [2021-12-22 12:40:23,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:40:23" (1/1) ... [2021-12-22 12:40:23,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:40:23,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:40:25,099 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.14.cil.c[382357,382370] [2021-12-22 12:40:25,120 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.14.cil.c[383339,383352] [2021-12-22 12:40:25,354 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:40:25,360 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:40:25,934 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.14.cil.c[382357,382370] [2021-12-22 12:40:25,937 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.14.cil.c[383339,383352] [2021-12-22 12:40:25,967 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:40:26,006 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:40:26,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:40:26 WrapperNode [2021-12-22 12:40:26,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:40:26,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:40:26,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:40:26,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:40:26,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:40:26" (1/1) ... [2021-12-22 12:40:26,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:40:26" (1/1) ... [2021-12-22 12:40:26,352 INFO L137 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13202 [2021-12-22 12:40:26,353 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:40:26,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:40:26,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:40:26,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:40:26,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:40:26" (1/1) ... [2021-12-22 12:40:26,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:40:26" (1/1) ... [2021-12-22 12:40:26,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:40:26" (1/1) ... [2021-12-22 12:40:26,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:40:26" (1/1) ... [2021-12-22 12:40:26,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:40:26" (1/1) ... [2021-12-22 12:40:26,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:40:26" (1/1) ... [2021-12-22 12:40:26,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:40:26" (1/1) ... [2021-12-22 12:40:26,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:40:26,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:40:26,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:40:26,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:40:26,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:40:26" (1/1) ... [2021-12-22 12:40:26,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:40:26,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:40:26,753 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) [2021-12-22 12:40:26,794 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 [2021-12-22 12:40:26,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:40:26,819 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-22 12:40:26,819 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-22 12:40:26,819 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-22 12:40:26,819 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-22 12:40:26,819 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-22 12:40:26,819 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-22 12:40:26,819 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-22 12:40:26,819 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-22 12:40:26,820 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-22 12:40:26,820 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-22 12:40:26,820 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-22 12:40:26,820 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-22 12:40:26,820 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-22 12:40:26,820 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-22 12:40:26,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 12:40:26,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:40:26,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:40:26,955 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:40:26,957 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:40:31,762 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:40:31,789 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:40:31,789 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-22 12:40:31,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:40:31 BoogieIcfgContainer [2021-12-22 12:40:31,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:40:31,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:40:31,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:40:31,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:40:31,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:40:23" (1/3) ... [2021-12-22 12:40:31,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dae22ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:40:31, skipping insertion in model container [2021-12-22 12:40:31,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:40:26" (2/3) ... [2021-12-22 12:40:31,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dae22ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:40:31, skipping insertion in model container [2021-12-22 12:40:31,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:40:31" (3/3) ... [2021-12-22 12:40:31,801 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.14.cil.c [2021-12-22 12:40:31,805 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:40:31,805 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 12:40:31,843 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:40:31,848 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 12:40:31,848 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 12:40:31,884 INFO L276 IsEmpty]: Start isEmpty. Operand has 2571 states, 2533 states have (on average 1.843268851164627) internal successors, (4669), 2538 states have internal predecessors, (4669), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-22 12:40:31,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-22 12:40:31,895 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:40:31,895 INFO L514 BasicCegarLoop]: 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] [2021-12-22 12:40:31,896 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:40:31,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:40:31,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1261108038, now seen corresponding path program 1 times [2021-12-22 12:40:31,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:40:31,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786801680] [2021-12-22 12:40:31,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:40:31,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:40:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:32,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:40:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:32,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:40:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:32,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:40:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:32,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:40:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:32,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:40:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:40:32,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:40:32,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786801680] [2021-12-22 12:40:32,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786801680] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:40:32,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:40:32,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:40:32,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998148766] [2021-12-22 12:40:32,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:40:32,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:40:32,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:40:32,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:40:32,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:40:32,383 INFO L87 Difference]: Start difference. First operand has 2571 states, 2533 states have (on average 1.843268851164627) internal successors, (4669), 2538 states have internal predecessors, (4669), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-22 12:40:33,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:40:33,796 INFO L93 Difference]: Finished difference Result 5277 states and 9684 transitions. [2021-12-22 12:40:33,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 12:40:33,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 179 [2021-12-22 12:40:33,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:40:33,817 INFO L225 Difference]: With dead ends: 5277 [2021-12-22 12:40:33,818 INFO L226 Difference]: Without dead ends: 2645 [2021-12-22 12:40:33,826 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:40:33,828 INFO L933 BasicCegarLoop]: 4691 mSDtfsCounter, 1044 mSDsluCounter, 12495 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 17186 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:40:33,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1068 Valid, 17186 Invalid, 767 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 12:40:33,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2021-12-22 12:40:33,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2503. [2021-12-22 12:40:33,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 2467 states have (on average 1.8265099310903932) internal successors, (4506), 2470 states have internal predecessors, (4506), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-22 12:40:33,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4560 transitions. [2021-12-22 12:40:33,950 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4560 transitions. Word has length 179 [2021-12-22 12:40:33,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:40:33,951 INFO L470 AbstractCegarLoop]: Abstraction has 2503 states and 4560 transitions. [2021-12-22 12:40:33,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-22 12:40:33,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4560 transitions. [2021-12-22 12:40:33,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-22 12:40:33,960 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:40:33,960 INFO L514 BasicCegarLoop]: 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] [2021-12-22 12:40:33,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 12:40:33,960 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:40:33,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:40:33,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1530760952, now seen corresponding path program 1 times [2021-12-22 12:40:33,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:40:33,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785803123] [2021-12-22 12:40:33,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:40:33,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:40:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:34,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:40:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:34,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:40:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:34,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:40:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:34,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:40:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:34,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:40:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:34,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:40:34,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:40:34,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785803123] [2021-12-22 12:40:34,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785803123] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:40:34,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:40:34,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:40:34,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884873857] [2021-12-22 12:40:34,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:40:34,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:40:34,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:40:34,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:40:34,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:40:34,162 INFO L87 Difference]: Start difference. First operand 2503 states and 4560 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-22 12:40:35,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:40:35,343 INFO L93 Difference]: Finished difference Result 3012 states and 5382 transitions. [2021-12-22 12:40:35,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 12:40:35,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 179 [2021-12-22 12:40:35,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:40:35,353 INFO L225 Difference]: With dead ends: 3012 [2021-12-22 12:40:35,354 INFO L226 Difference]: Without dead ends: 2645 [2021-12-22 12:40:35,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:40:35,357 INFO L933 BasicCegarLoop]: 4621 mSDtfsCounter, 1030 mSDsluCounter, 12292 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 16913 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 12:40:35,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1054 Valid, 16913 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 12:40:35,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2021-12-22 12:40:35,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2503. [2021-12-22 12:40:35,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 2467 states have (on average 1.8261045804620997) internal successors, (4505), 2470 states have internal predecessors, (4505), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-22 12:40:35,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4559 transitions. [2021-12-22 12:40:35,411 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4559 transitions. Word has length 179 [2021-12-22 12:40:35,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:40:35,411 INFO L470 AbstractCegarLoop]: Abstraction has 2503 states and 4559 transitions. [2021-12-22 12:40:35,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-22 12:40:35,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4559 transitions. [2021-12-22 12:40:35,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-22 12:40:35,413 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:40:35,414 INFO L514 BasicCegarLoop]: 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] [2021-12-22 12:40:35,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 12:40:35,414 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:40:35,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:40:35,415 INFO L85 PathProgramCache]: Analyzing trace with hash -2101032758, now seen corresponding path program 1 times [2021-12-22 12:40:35,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:40:35,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031818415] [2021-12-22 12:40:35,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:40:35,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:40:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:35,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:40:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:35,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:40:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:35,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:40:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:35,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:40:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:35,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:40:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:35,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:40:35,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:40:35,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031818415] [2021-12-22 12:40:35,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031818415] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:40:35,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:40:35,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 12:40:35,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953990727] [2021-12-22 12:40:35,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:40:35,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 12:40:35,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:40:35,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 12:40:35,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 12:40:35,548 INFO L87 Difference]: Start difference. First operand 2503 states and 4559 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2021-12-22 12:40:37,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:40:37,894 INFO L93 Difference]: Finished difference Result 3529 states and 6222 transitions. [2021-12-22 12:40:37,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 12:40:37,894 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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 179 [2021-12-22 12:40:37,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:40:37,905 INFO L225 Difference]: With dead ends: 3529 [2021-12-22 12:40:37,905 INFO L226 Difference]: Without dead ends: 3167 [2021-12-22 12:40:37,908 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:40:37,909 INFO L933 BasicCegarLoop]: 4673 mSDtfsCounter, 5521 mSDsluCounter, 12900 mSDsCounter, 0 mSdLazyCounter, 1956 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5540 SdHoareTripleChecker+Valid, 17573 SdHoareTripleChecker+Invalid, 2080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-22 12:40:37,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5540 Valid, 17573 Invalid, 2080 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 1956 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-22 12:40:37,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3167 states. [2021-12-22 12:40:37,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3167 to 2882. [2021-12-22 12:40:37,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2818 states have (on average 1.798083747338538) internal successors, (5067), 2822 states have internal predecessors, (5067), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-12-22 12:40:37,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 5166 transitions. [2021-12-22 12:40:37,984 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 5166 transitions. Word has length 179 [2021-12-22 12:40:37,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:40:37,985 INFO L470 AbstractCegarLoop]: Abstraction has 2882 states and 5166 transitions. [2021-12-22 12:40:37,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2021-12-22 12:40:37,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 5166 transitions. [2021-12-22 12:40:37,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-22 12:40:37,987 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:40:37,987 INFO L514 BasicCegarLoop]: 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] [2021-12-22 12:40:37,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 12:40:37,987 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:40:37,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:40:37,988 INFO L85 PathProgramCache]: Analyzing trace with hash 808194758, now seen corresponding path program 1 times [2021-12-22 12:40:37,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:40:37,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731401188] [2021-12-22 12:40:37,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:40:37,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:40:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:38,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:40:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:38,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:40:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:38,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:40:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:38,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:40:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:38,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:40:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:38,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:40:38,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:40:38,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731401188] [2021-12-22 12:40:38,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731401188] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:40:38,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:40:38,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:40:38,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792187825] [2021-12-22 12:40:38,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:40:38,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:40:38,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:40:38,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:40:38,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:40:38,115 INFO L87 Difference]: Start difference. First operand 2882 states and 5166 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:40:41,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:40:41,015 INFO L93 Difference]: Finished difference Result 4448 states and 7708 transitions. [2021-12-22 12:40:41,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:40:41,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-22 12:40:41,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:40:41,029 INFO L225 Difference]: With dead ends: 4448 [2021-12-22 12:40:41,031 INFO L226 Difference]: Without dead ends: 3707 [2021-12-22 12:40:41,035 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:40:41,045 INFO L933 BasicCegarLoop]: 4980 mSDtfsCounter, 5549 mSDsluCounter, 17815 mSDsCounter, 0 mSdLazyCounter, 3072 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5568 SdHoareTripleChecker+Valid, 22795 SdHoareTripleChecker+Invalid, 3152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:40:41,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5568 Valid, 22795 Invalid, 3152 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 3072 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-22 12:40:41,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3707 states. [2021-12-22 12:40:41,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3707 to 3234. [2021-12-22 12:40:41,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 3142 states have (on average 1.7743475493316359) internal successors, (5575), 3147 states have internal predecessors, (5575), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2021-12-22 12:40:41,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 5718 transitions. [2021-12-22 12:40:41,161 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 5718 transitions. Word has length 179 [2021-12-22 12:40:41,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:40:41,165 INFO L470 AbstractCegarLoop]: Abstraction has 3234 states and 5718 transitions. [2021-12-22 12:40:41,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:40:41,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 5718 transitions. [2021-12-22 12:40:41,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-22 12:40:41,168 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:40:41,168 INFO L514 BasicCegarLoop]: 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] [2021-12-22 12:40:41,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 12:40:41,169 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:40:41,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:40:41,169 INFO L85 PathProgramCache]: Analyzing trace with hash -961276856, now seen corresponding path program 1 times [2021-12-22 12:40:41,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:40:41,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952463270] [2021-12-22 12:40:41,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:40:41,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:40:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:41,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:40:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:41,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:40:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:41,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:40:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:41,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:40:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:41,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:40:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:41,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:40:41,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:40:41,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952463270] [2021-12-22 12:40:41,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952463270] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:40:41,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:40:41,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:40:41,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931288655] [2021-12-22 12:40:41,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:40:41,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:40:41,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:40:41,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:40:41,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:40:41,302 INFO L87 Difference]: Start difference. First operand 3234 states and 5718 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:40:44,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:40:44,117 INFO L93 Difference]: Finished difference Result 5803 states and 9880 transitions. [2021-12-22 12:40:44,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:40:44,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-22 12:40:44,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:40:44,141 INFO L225 Difference]: With dead ends: 5803 [2021-12-22 12:40:44,142 INFO L226 Difference]: Without dead ends: 4710 [2021-12-22 12:40:44,145 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:40:44,146 INFO L933 BasicCegarLoop]: 4717 mSDtfsCounter, 5660 mSDsluCounter, 17150 mSDsCounter, 0 mSdLazyCounter, 2725 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5679 SdHoareTripleChecker+Valid, 21867 SdHoareTripleChecker+Invalid, 2848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:40:44,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5679 Valid, 21867 Invalid, 2848 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 2725 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-22 12:40:44,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4710 states. [2021-12-22 12:40:44,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4710 to 3939. [2021-12-22 12:40:44,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3939 states, 3791 states have (on average 1.738855183328937) internal successors, (6592), 3798 states have internal predecessors, (6592), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-22 12:40:44,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 6827 transitions. [2021-12-22 12:40:44,288 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 6827 transitions. Word has length 179 [2021-12-22 12:40:44,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:40:44,289 INFO L470 AbstractCegarLoop]: Abstraction has 3939 states and 6827 transitions. [2021-12-22 12:40:44,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:40:44,290 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 6827 transitions. [2021-12-22 12:40:44,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-22 12:40:44,292 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:40:44,292 INFO L514 BasicCegarLoop]: 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] [2021-12-22 12:40:44,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 12:40:44,293 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:40:44,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:40:44,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1572545914, now seen corresponding path program 1 times [2021-12-22 12:40:44,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:40:44,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020017641] [2021-12-22 12:40:44,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:40:44,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:40:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:44,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:40:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:44,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:40:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:44,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:40:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:44,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:40:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:44,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:40:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:40:44,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:40:44,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020017641] [2021-12-22 12:40:44,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020017641] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:40:44,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:40:44,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:40:44,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760874282] [2021-12-22 12:40:44,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:40:44,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:40:44,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:40:44,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:40:44,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:40:44,431 INFO L87 Difference]: Start difference. First operand 3939 states and 6827 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:40:47,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:40:47,509 INFO L93 Difference]: Finished difference Result 8408 states and 14029 transitions. [2021-12-22 12:40:47,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:40:47,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-22 12:40:47,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:40:47,536 INFO L225 Difference]: With dead ends: 8408 [2021-12-22 12:40:47,536 INFO L226 Difference]: Without dead ends: 6610 [2021-12-22 12:40:47,558 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:40:47,559 INFO L933 BasicCegarLoop]: 4968 mSDtfsCounter, 5544 mSDsluCounter, 17811 mSDsCounter, 0 mSdLazyCounter, 3075 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5563 SdHoareTripleChecker+Valid, 22779 SdHoareTripleChecker+Invalid, 3160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:40:47,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5563 Valid, 22779 Invalid, 3160 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 3075 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-22 12:40:47,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6610 states. [2021-12-22 12:40:47,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6610 to 5350. [2021-12-22 12:40:47,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5350 states, 5090 states have (on average 1.694695481335953) internal successors, (8626), 5101 states have internal predecessors, (8626), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2021-12-22 12:40:47,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5350 states to 5350 states and 9051 transitions. [2021-12-22 12:40:47,777 INFO L78 Accepts]: Start accepts. Automaton has 5350 states and 9051 transitions. Word has length 179 [2021-12-22 12:40:47,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:40:47,778 INFO L470 AbstractCegarLoop]: Abstraction has 5350 states and 9051 transitions. [2021-12-22 12:40:47,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:40:47,778 INFO L276 IsEmpty]: Start isEmpty. Operand 5350 states and 9051 transitions. [2021-12-22 12:40:47,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-22 12:40:47,780 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:40:47,781 INFO L514 BasicCegarLoop]: 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] [2021-12-22 12:40:47,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 12:40:47,781 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:40:47,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:40:47,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1317229704, now seen corresponding path program 1 times [2021-12-22 12:40:47,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:40:47,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074040037] [2021-12-22 12:40:47,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:40:47,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:40:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:47,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:40:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:47,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:40:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:47,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:40:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:47,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:40:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:47,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:40:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:47,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:40:47,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:40:47,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074040037] [2021-12-22 12:40:47,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074040037] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:40:47,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:40:47,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:40:47,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91722562] [2021-12-22 12:40:47,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:40:47,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:40:47,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:40:47,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:40:47,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:40:47,903 INFO L87 Difference]: Start difference. First operand 5350 states and 9051 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:40:51,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:40:51,053 INFO L93 Difference]: Finished difference Result 13610 states and 22331 transitions. [2021-12-22 12:40:51,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:40:51,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-22 12:40:51,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:40:51,084 INFO L225 Difference]: With dead ends: 13610 [2021-12-22 12:40:51,084 INFO L226 Difference]: Without dead ends: 10401 [2021-12-22 12:40:51,098 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:40:51,098 INFO L933 BasicCegarLoop]: 4960 mSDtfsCounter, 5539 mSDsluCounter, 17811 mSDsCounter, 0 mSdLazyCounter, 3055 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5558 SdHoareTripleChecker+Valid, 22771 SdHoareTripleChecker+Invalid, 3141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:40:51,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5558 Valid, 22771 Invalid, 3141 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3055 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-22 12:40:51,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10401 states. [2021-12-22 12:40:51,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10401 to 8186. [2021-12-22 12:40:51,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8186 states, 7702 states have (on average 1.6512594131394442) internal successors, (12718), 7721 states have internal predecessors, (12718), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2021-12-22 12:40:51,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8186 states to 8186 states and 13541 transitions. [2021-12-22 12:40:51,465 INFO L78 Accepts]: Start accepts. Automaton has 8186 states and 13541 transitions. Word has length 179 [2021-12-22 12:40:51,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:40:51,465 INFO L470 AbstractCegarLoop]: Abstraction has 8186 states and 13541 transitions. [2021-12-22 12:40:51,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:40:51,466 INFO L276 IsEmpty]: Start isEmpty. Operand 8186 states and 13541 transitions. [2021-12-22 12:40:51,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-22 12:40:51,470 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:40:51,470 INFO L514 BasicCegarLoop]: 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] [2021-12-22 12:40:51,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 12:40:51,470 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:40:51,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:40:51,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1531156726, now seen corresponding path program 1 times [2021-12-22 12:40:51,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:40:51,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591887325] [2021-12-22 12:40:51,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:40:51,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:40:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:51,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:40:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:51,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:40:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:51,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:40:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:51,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:40:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:51,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:40:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:51,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:40:51,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:40:51,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591887325] [2021-12-22 12:40:51,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591887325] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:40:51,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:40:51,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:40:51,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151669127] [2021-12-22 12:40:51,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:40:51,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:40:51,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:40:51,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:40:51,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:40:51,590 INFO L87 Difference]: Start difference. First operand 8186 states and 13541 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:40:55,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:40:55,230 INFO L93 Difference]: Finished difference Result 24032 states and 39027 transitions. [2021-12-22 12:40:55,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:40:55,231 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-22 12:40:55,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:40:55,279 INFO L225 Difference]: With dead ends: 24032 [2021-12-22 12:40:55,279 INFO L226 Difference]: Without dead ends: 17987 [2021-12-22 12:40:55,297 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:40:55,298 INFO L933 BasicCegarLoop]: 4955 mSDtfsCounter, 5538 mSDsluCounter, 17811 mSDsCounter, 0 mSdLazyCounter, 3047 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5557 SdHoareTripleChecker+Valid, 22766 SdHoareTripleChecker+Invalid, 3133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:40:55,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5557 Valid, 22766 Invalid, 3133 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3047 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-22 12:40:55,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17987 states. [2021-12-22 12:40:56,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17987 to 13871. [2021-12-22 12:40:56,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13871 states, 12939 states have (on average 1.6168173738310534) internal successors, (20920), 12974 states have internal predecessors, (20920), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-22 12:40:56,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13871 states to 13871 states and 22593 transitions. [2021-12-22 12:40:56,104 INFO L78 Accepts]: Start accepts. Automaton has 13871 states and 22593 transitions. Word has length 179 [2021-12-22 12:40:56,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:40:56,105 INFO L470 AbstractCegarLoop]: Abstraction has 13871 states and 22593 transitions. [2021-12-22 12:40:56,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:40:56,105 INFO L276 IsEmpty]: Start isEmpty. Operand 13871 states and 22593 transitions. [2021-12-22 12:40:56,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-22 12:40:56,112 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:40:56,112 INFO L514 BasicCegarLoop]: 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] [2021-12-22 12:40:56,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 12:40:56,113 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:40:56,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:40:56,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1840643144, now seen corresponding path program 1 times [2021-12-22 12:40:56,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:40:56,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126216192] [2021-12-22 12:40:56,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:40:56,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:40:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:56,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:40:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:56,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:40:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:56,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:40:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:56,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:40:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:56,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:40:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:56,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:40:56,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:40:56,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126216192] [2021-12-22 12:40:56,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126216192] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:40:56,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:40:56,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:40:56,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289855649] [2021-12-22 12:40:56,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:40:56,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:40:56,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:40:56,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:40:56,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:40:56,251 INFO L87 Difference]: Start difference. First operand 13871 states and 22593 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:40:58,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:40:58,746 INFO L93 Difference]: Finished difference Result 29968 states and 48786 transitions. [2021-12-22 12:40:58,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 12:40:58,748 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-22 12:40:58,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:40:58,798 INFO L225 Difference]: With dead ends: 29968 [2021-12-22 12:40:58,798 INFO L226 Difference]: Without dead ends: 18238 [2021-12-22 12:40:58,828 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:40:58,828 INFO L933 BasicCegarLoop]: 4597 mSDtfsCounter, 5089 mSDsluCounter, 16781 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5109 SdHoareTripleChecker+Valid, 21378 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:40:58,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5109 Valid, 21378 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-22 12:40:58,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18238 states. [2021-12-22 12:40:59,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18238 to 13871. [2021-12-22 12:40:59,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13871 states, 12939 states have (on average 1.6142669448952778) internal successors, (20887), 12974 states have internal predecessors, (20887), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-22 12:40:59,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13871 states to 13871 states and 22560 transitions. [2021-12-22 12:40:59,555 INFO L78 Accepts]: Start accepts. Automaton has 13871 states and 22560 transitions. Word has length 179 [2021-12-22 12:40:59,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:40:59,555 INFO L470 AbstractCegarLoop]: Abstraction has 13871 states and 22560 transitions. [2021-12-22 12:40:59,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:40:59,556 INFO L276 IsEmpty]: Start isEmpty. Operand 13871 states and 22560 transitions. [2021-12-22 12:40:59,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-22 12:40:59,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:40:59,563 INFO L514 BasicCegarLoop]: 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] [2021-12-22 12:40:59,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 12:40:59,563 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:40:59,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:40:59,564 INFO L85 PathProgramCache]: Analyzing trace with hash -2068461750, now seen corresponding path program 1 times [2021-12-22 12:40:59,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:40:59,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763081162] [2021-12-22 12:40:59,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:40:59,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:40:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:59,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:40:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:59,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:40:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:59,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:40:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:59,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:40:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:59,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:40:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:59,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:40:59,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:40:59,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763081162] [2021-12-22 12:40:59,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763081162] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:40:59,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:40:59,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:40:59,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103845505] [2021-12-22 12:40:59,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:40:59,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:40:59,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:40:59,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:40:59,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:40:59,688 INFO L87 Difference]: Start difference. First operand 13871 states and 22560 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:41:04,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:41:04,560 INFO L93 Difference]: Finished difference Result 44841 states and 72377 transitions. [2021-12-22 12:41:04,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:41:04,561 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-22 12:41:04,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:41:04,653 INFO L225 Difference]: With dead ends: 44841 [2021-12-22 12:41:04,654 INFO L226 Difference]: Without dead ends: 33111 [2021-12-22 12:41:04,685 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:41:04,686 INFO L933 BasicCegarLoop]: 4944 mSDtfsCounter, 5530 mSDsluCounter, 17811 mSDsCounter, 0 mSdLazyCounter, 3020 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5549 SdHoareTripleChecker+Valid, 22755 SdHoareTripleChecker+Invalid, 3106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:41:04,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5549 Valid, 22755 Invalid, 3106 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3020 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-22 12:41:04,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33111 states. [2021-12-22 12:41:06,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33111 to 25305. [2021-12-22 12:41:06,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25305 states, 23477 states have (on average 1.5904502278826085) internal successors, (37339), 23544 states have internal predecessors, (37339), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2021-12-22 12:41:06,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25305 states to 25305 states and 40874 transitions. [2021-12-22 12:41:06,345 INFO L78 Accepts]: Start accepts. Automaton has 25305 states and 40874 transitions. Word has length 179 [2021-12-22 12:41:06,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:41:06,346 INFO L470 AbstractCegarLoop]: Abstraction has 25305 states and 40874 transitions. [2021-12-22 12:41:06,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:41:06,346 INFO L276 IsEmpty]: Start isEmpty. Operand 25305 states and 40874 transitions. [2021-12-22 12:41:06,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-22 12:41:06,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:41:06,358 INFO L514 BasicCegarLoop]: 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] [2021-12-22 12:41:06,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 12:41:06,358 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:41:06,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:41:06,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1961858056, now seen corresponding path program 1 times [2021-12-22 12:41:06,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:41:06,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363473087] [2021-12-22 12:41:06,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:41:06,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:41:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:06,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:41:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:06,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:41:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:06,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:41:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:06,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:41:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:06,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:41:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:06,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:41:06,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:41:06,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363473087] [2021-12-22 12:41:06,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363473087] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:41:06,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:41:06,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:41:06,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579253608] [2021-12-22 12:41:06,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:41:06,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:41:06,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:41:06,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:41:06,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:41:06,476 INFO L87 Difference]: Start difference. First operand 25305 states and 40874 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:41:13,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:41:13,718 INFO L93 Difference]: Finished difference Result 86529 states and 139953 transitions. [2021-12-22 12:41:13,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:41:13,718 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-22 12:41:13,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:41:14,010 INFO L225 Difference]: With dead ends: 86529 [2021-12-22 12:41:14,010 INFO L226 Difference]: Without dead ends: 63365 [2021-12-22 12:41:14,055 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:41:14,056 INFO L933 BasicCegarLoop]: 4939 mSDtfsCounter, 5529 mSDsluCounter, 17811 mSDsCounter, 0 mSdLazyCounter, 3012 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5548 SdHoareTripleChecker+Valid, 22750 SdHoareTripleChecker+Invalid, 3098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:41:14,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5548 Valid, 22750 Invalid, 3098 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3012 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-22 12:41:14,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63365 states. [2021-12-22 12:41:17,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63365 to 48234. [2021-12-22 12:41:17,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48234 states, 44614 states have (on average 1.5764782355314475) internal successors, (70333), 44745 states have internal predecessors, (70333), 2716 states have call successors, (2716), 775 states have call predecessors, (2716), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2021-12-22 12:41:17,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48234 states to 48234 states and 78078 transitions. [2021-12-22 12:41:17,474 INFO L78 Accepts]: Start accepts. Automaton has 48234 states and 78078 transitions. Word has length 179 [2021-12-22 12:41:17,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:41:17,474 INFO L470 AbstractCegarLoop]: Abstraction has 48234 states and 78078 transitions. [2021-12-22 12:41:17,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:41:17,475 INFO L276 IsEmpty]: Start isEmpty. Operand 48234 states and 78078 transitions. [2021-12-22 12:41:17,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-22 12:41:17,649 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:41:17,649 INFO L514 BasicCegarLoop]: 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] [2021-12-22 12:41:17,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 12:41:17,649 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:41:17,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:41:17,650 INFO L85 PathProgramCache]: Analyzing trace with hash -401983606, now seen corresponding path program 1 times [2021-12-22 12:41:17,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:41:17,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236055633] [2021-12-22 12:41:17,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:41:17,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:41:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:17,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:41:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:17,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:41:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:17,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:41:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:17,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:41:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:17,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:41:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:41:17,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:41:17,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:41:17,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236055633] [2021-12-22 12:41:17,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236055633] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:41:17,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:41:17,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:41:17,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859168249] [2021-12-22 12:41:17,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:41:17,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:41:17,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:41:17,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:41:17,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:41:17,796 INFO L87 Difference]: Start difference. First operand 48234 states and 78078 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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)