./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec2_product03.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 859441835e916fdbcdc78c3c849990624cc8f637b8bbdd3bb312aaefa9b36e0f --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 16:50:06,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 16:50:06,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 16:50:06,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 16:50:06,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 16:50:06,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 16:50:06,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 16:50:06,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 16:50:06,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 16:50:06,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 16:50:06,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 16:50:06,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 16:50:06,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 16:50:06,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 16:50:06,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 16:50:06,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 16:50:06,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 16:50:06,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 16:50:06,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 16:50:06,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 16:50:06,471 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 16:50:06,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 16:50:06,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 16:50:06,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 16:50:06,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 16:50:06,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 16:50:06,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 16:50:06,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 16:50:06,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 16:50:06,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 16:50:06,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 16:50:06,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 16:50:06,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 16:50:06,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 16:50:06,483 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 16:50:06,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 16:50:06,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 16:50:06,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 16:50:06,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 16:50:06,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 16:50:06,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 16:50:06,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 16:50:06,488 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 16:50:06,512 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 16:50:06,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 16:50:06,514 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 16:50:06,514 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 16:50:06,515 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 16:50:06,515 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 16:50:06,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 16:50:06,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 16:50:06,516 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 16:50:06,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 16:50:06,517 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 16:50:06,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 16:50:06,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 16:50:06,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 16:50:06,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 16:50:06,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 16:50:06,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 16:50:06,518 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 16:50:06,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 16:50:06,518 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 16:50:06,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 16:50:06,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 16:50:06,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 16:50:06,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 16:50:06,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 16:50:06,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 16:50:06,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 16:50:06,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 16:50:06,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 16:50:06,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 16:50:06,521 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 16:50:06,521 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 16:50:06,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 16:50:06,521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 859441835e916fdbcdc78c3c849990624cc8f637b8bbdd3bb312aaefa9b36e0f [2022-07-19 16:50:06,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 16:50:06,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 16:50:06,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 16:50:06,754 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 16:50:06,754 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 16:50:06,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c [2022-07-19 16:50:06,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0b8904dd/ab27ca3a427c47fdbc21352780e7873a/FLAGd8c96a5f5 [2022-07-19 16:50:07,261 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 16:50:07,261 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c [2022-07-19 16:50:07,289 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0b8904dd/ab27ca3a427c47fdbc21352780e7873a/FLAGd8c96a5f5 [2022-07-19 16:50:07,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0b8904dd/ab27ca3a427c47fdbc21352780e7873a [2022-07-19 16:50:07,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 16:50:07,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 16:50:07,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 16:50:07,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 16:50:07,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 16:50:07,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 04:50:07" (1/1) ... [2022-07-19 16:50:07,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e4f4cf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:50:07, skipping insertion in model container [2022-07-19 16:50:07,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 04:50:07" (1/1) ... [2022-07-19 16:50:07,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 16:50:07,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 16:50:07,898 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/product-lines/elevator_spec2_product03.cil.c[29828,29841] [2022-07-19 16:50:08,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 16:50:08,046 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 16:50:08,104 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/product-lines/elevator_spec2_product03.cil.c[29828,29841] [2022-07-19 16:50:08,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 16:50:08,202 INFO L208 MainTranslator]: Completed translation [2022-07-19 16:50:08,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:50:08 WrapperNode [2022-07-19 16:50:08,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 16:50:08,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 16:50:08,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 16:50:08,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 16:50:08,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:50:08" (1/1) ... [2022-07-19 16:50:08,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:50:08" (1/1) ... [2022-07-19 16:50:08,320 INFO L137 Inliner]: procedures = 92, calls = 336, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 1071 [2022-07-19 16:50:08,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 16:50:08,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 16:50:08,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 16:50:08,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 16:50:08,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:50:08" (1/1) ... [2022-07-19 16:50:08,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:50:08" (1/1) ... [2022-07-19 16:50:08,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:50:08" (1/1) ... [2022-07-19 16:50:08,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:50:08" (1/1) ... [2022-07-19 16:50:08,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:50:08" (1/1) ... [2022-07-19 16:50:08,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:50:08" (1/1) ... [2022-07-19 16:50:08,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:50:08" (1/1) ... [2022-07-19 16:50:08,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 16:50:08,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 16:50:08,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 16:50:08,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 16:50:08,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:50:08" (1/1) ... [2022-07-19 16:50:08,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 16:50:08,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:50:08,444 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 16:50:08,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 16:50:08,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 16:50:08,486 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-19 16:50:08,486 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-19 16:50:08,486 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-19 16:50:08,486 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-19 16:50:08,486 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-07-19 16:50:08,486 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-07-19 16:50:08,487 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-19 16:50:08,487 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-19 16:50:08,487 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-19 16:50:08,487 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-19 16:50:08,488 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-19 16:50:08,488 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-19 16:50:08,488 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-19 16:50:08,488 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-19 16:50:08,489 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-19 16:50:08,489 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-19 16:50:08,489 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-19 16:50:08,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-19 16:50:08,489 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-19 16:50:08,489 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-19 16:50:08,489 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-19 16:50:08,490 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-19 16:50:08,490 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-19 16:50:08,490 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-19 16:50:08,490 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-19 16:50:08,491 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-19 16:50:08,491 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-19 16:50:08,491 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-19 16:50:08,491 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-19 16:50:08,491 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-19 16:50:08,491 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-19 16:50:08,491 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-19 16:50:08,492 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-19 16:50:08,492 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-19 16:50:08,492 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-19 16:50:08,492 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-19 16:50:08,492 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2022-07-19 16:50:08,493 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2022-07-19 16:50:08,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 16:50:08,493 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-19 16:50:08,493 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-19 16:50:08,493 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-19 16:50:08,494 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-19 16:50:08,494 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-19 16:50:08,494 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-19 16:50:08,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 16:50:08,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 16:50:08,494 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-19 16:50:08,494 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-19 16:50:08,672 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 16:50:08,674 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 16:50:09,548 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 16:50:09,559 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 16:50:09,560 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 16:50:09,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 04:50:09 BoogieIcfgContainer [2022-07-19 16:50:09,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 16:50:09,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 16:50:09,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 16:50:09,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 16:50:09,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 04:50:07" (1/3) ... [2022-07-19 16:50:09,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b161d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 04:50:09, skipping insertion in model container [2022-07-19 16:50:09,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:50:08" (2/3) ... [2022-07-19 16:50:09,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b161d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 04:50:09, skipping insertion in model container [2022-07-19 16:50:09,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 04:50:09" (3/3) ... [2022-07-19 16:50:09,569 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product03.cil.c [2022-07-19 16:50:09,580 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 16:50:09,581 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 16:50:09,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 16:50:09,661 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@597f3928, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@52e861de [2022-07-19 16:50:09,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 16:50:09,677 INFO L276 IsEmpty]: Start isEmpty. Operand has 545 states, 426 states have (on average 1.6948356807511737) internal successors, (722), 447 states have internal predecessors, (722), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) [2022-07-19 16:50:09,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 16:50:09,704 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:50:09,705 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:50:09,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:50:09,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:50:09,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1217975181, now seen corresponding path program 1 times [2022-07-19 16:50:09,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:50:09,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094516723] [2022-07-19 16:50:09,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:50:09,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:50:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:10,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:50:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:10,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:10,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:50:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:10,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 16:50:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:10,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:10,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:10,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:10,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:50:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:10,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:50:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:10,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:10,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:10,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:50:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:10,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:50:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:10,549 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:50:10,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:50:10,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094516723] [2022-07-19 16:50:10,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094516723] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:50:10,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:50:10,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:50:10,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216236121] [2022-07-19 16:50:10,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:50:10,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:50:10,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:50:10,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:50:10,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:50:10,590 INFO L87 Difference]: Start difference. First operand has 545 states, 426 states have (on average 1.6948356807511737) internal successors, (722), 447 states have internal predecessors, (722), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:50:15,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:50:15,114 INFO L93 Difference]: Finished difference Result 1329 states and 2269 transitions. [2022-07-19 16:50:15,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 16:50:15,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-07-19 16:50:15,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:50:15,139 INFO L225 Difference]: With dead ends: 1329 [2022-07-19 16:50:15,139 INFO L226 Difference]: Without dead ends: 796 [2022-07-19 16:50:15,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:50:15,152 INFO L413 NwaCegarLoop]: 945 mSDtfsCounter, 1791 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 576 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1870 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 2892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 576 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:50:15,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1870 Valid, 2245 Invalid, 2892 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [576 Valid, 2316 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-19 16:50:15,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-07-19 16:50:15,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-07-19 16:50:15,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.6904761904761905) internal successors, (710), 439 states have internal predecessors, (710), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-19 16:50:15,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 893 transitions. [2022-07-19 16:50:15,345 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 893 transitions. Word has length 102 [2022-07-19 16:50:15,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:50:15,345 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 893 transitions. [2022-07-19 16:50:15,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:50:15,346 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 893 transitions. [2022-07-19 16:50:15,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-19 16:50:15,354 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:50:15,354 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:50:15,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 16:50:15,355 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:50:15,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:50:15,355 INFO L85 PathProgramCache]: Analyzing trace with hash -493393200, now seen corresponding path program 1 times [2022-07-19 16:50:15,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:50:15,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829743713] [2022-07-19 16:50:15,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:50:15,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:50:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:15,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:50:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:15,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:15,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:50:15,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:15,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:50:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:15,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:15,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:15,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:15,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:50:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:15,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:50:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:15,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:15,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:15,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:50:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:15,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:50:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:15,741 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:50:15,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:50:15,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829743713] [2022-07-19 16:50:15,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829743713] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:50:15,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:50:15,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:50:15,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697947016] [2022-07-19 16:50:15,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:50:15,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:50:15,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:50:15,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:50:15,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:50:15,745 INFO L87 Difference]: Start difference. First operand 537 states and 893 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:50:20,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:50:20,520 INFO L93 Difference]: Finished difference Result 1315 states and 2231 transitions. [2022-07-19 16:50:20,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 16:50:20,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2022-07-19 16:50:20,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:50:20,527 INFO L225 Difference]: With dead ends: 1315 [2022-07-19 16:50:20,527 INFO L226 Difference]: Without dead ends: 796 [2022-07-19 16:50:20,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:50:20,531 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 933 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 2590 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 2371 SdHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 2590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:50:20,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 2371 Invalid, 2855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 2590 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-19 16:50:20,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-07-19 16:50:20,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-07-19 16:50:20,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.688095238095238) internal successors, (709), 439 states have internal predecessors, (709), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-19 16:50:20,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 892 transitions. [2022-07-19 16:50:20,603 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 892 transitions. Word has length 105 [2022-07-19 16:50:20,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:50:20,604 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 892 transitions. [2022-07-19 16:50:20,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:50:20,605 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 892 transitions. [2022-07-19 16:50:20,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-19 16:50:20,610 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:50:20,610 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:50:20,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 16:50:20,611 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:50:20,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:50:20,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1657049085, now seen corresponding path program 1 times [2022-07-19 16:50:20,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:50:20,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968506493] [2022-07-19 16:50:20,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:50:20,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:50:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:20,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:50:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:20,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:20,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:50:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:20,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 16:50:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:20,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:20,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:20,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:20,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:50:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:20,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:50:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:20,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:20,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:20,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:50:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:20,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:50:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:20,975 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:50:20,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:50:20,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968506493] [2022-07-19 16:50:20,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968506493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:50:20,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:50:20,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:50:20,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564819901] [2022-07-19 16:50:20,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:50:20,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:50:20,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:50:20,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:50:20,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:50:20,978 INFO L87 Difference]: Start difference. First operand 537 states and 892 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:50:24,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:50:24,716 INFO L93 Difference]: Finished difference Result 1315 states and 2230 transitions. [2022-07-19 16:50:24,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 16:50:24,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2022-07-19 16:50:24,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:50:24,722 INFO L225 Difference]: With dead ends: 1315 [2022-07-19 16:50:24,722 INFO L226 Difference]: Without dead ends: 796 [2022-07-19 16:50:24,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:50:24,726 INFO L413 NwaCegarLoop]: 944 mSDtfsCounter, 1358 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 2283 SdHoareTripleChecker+Invalid, 2794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:50:24,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 2283 Invalid, 2794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 2375 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-19 16:50:24,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-07-19 16:50:24,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-07-19 16:50:24,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.6857142857142857) internal successors, (708), 439 states have internal predecessors, (708), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-19 16:50:24,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 891 transitions. [2022-07-19 16:50:24,783 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 891 transitions. Word has length 106 [2022-07-19 16:50:24,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:50:24,783 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 891 transitions. [2022-07-19 16:50:24,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:50:24,783 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 891 transitions. [2022-07-19 16:50:24,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-19 16:50:24,786 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:50:24,787 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:50:24,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 16:50:24,787 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:50:24,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:50:24,788 INFO L85 PathProgramCache]: Analyzing trace with hash -455717396, now seen corresponding path program 1 times [2022-07-19 16:50:24,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:50:24,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712686799] [2022-07-19 16:50:24,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:50:24,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:50:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:24,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:50:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:24,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:24,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 16:50:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:25,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 16:50:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:25,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:25,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:25,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:25,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:50:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:25,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:50:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:25,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:25,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:25,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:50:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:25,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:50:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:25,131 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:50:25,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:50:25,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712686799] [2022-07-19 16:50:25,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712686799] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:50:25,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:50:25,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:50:25,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513655469] [2022-07-19 16:50:25,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:50:25,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:50:25,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:50:25,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:50:25,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:50:25,134 INFO L87 Difference]: Start difference. First operand 537 states and 891 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:50:28,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:50:28,680 INFO L93 Difference]: Finished difference Result 1315 states and 2229 transitions. [2022-07-19 16:50:28,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 16:50:28,680 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2022-07-19 16:50:28,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:50:28,685 INFO L225 Difference]: With dead ends: 1315 [2022-07-19 16:50:28,685 INFO L226 Difference]: Without dead ends: 796 [2022-07-19 16:50:28,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:50:28,688 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 1766 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 2241 SdHoareTripleChecker+Invalid, 2877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:50:28,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1845 Valid, 2241 Invalid, 2877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-19 16:50:28,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-07-19 16:50:28,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-07-19 16:50:28,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.6833333333333333) internal successors, (707), 439 states have internal predecessors, (707), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-19 16:50:28,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 890 transitions. [2022-07-19 16:50:28,746 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 890 transitions. Word has length 107 [2022-07-19 16:50:28,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:50:28,747 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 890 transitions. [2022-07-19 16:50:28,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:50:28,747 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 890 transitions. [2022-07-19 16:50:28,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-19 16:50:28,750 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:50:28,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:50:28,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 16:50:28,751 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:50:28,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:50:28,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1583969447, now seen corresponding path program 1 times [2022-07-19 16:50:28,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:50:28,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107348512] [2022-07-19 16:50:28,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:50:28,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:50:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:28,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:50:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:28,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:28,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:28,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 16:50:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:29,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 16:50:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:29,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:29,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:29,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:29,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:50:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:29,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:50:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:29,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:29,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:29,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:50:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:29,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:50:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:29,088 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:50:29,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:50:29,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107348512] [2022-07-19 16:50:29,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107348512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:50:29,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:50:29,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:50:29,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347267894] [2022-07-19 16:50:29,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:50:29,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:50:29,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:50:29,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:50:29,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:50:29,091 INFO L87 Difference]: Start difference. First operand 537 states and 890 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:50:32,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:50:32,638 INFO L93 Difference]: Finished difference Result 1315 states and 2228 transitions. [2022-07-19 16:50:32,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 16:50:32,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2022-07-19 16:50:32,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:50:32,643 INFO L225 Difference]: With dead ends: 1315 [2022-07-19 16:50:32,643 INFO L226 Difference]: Without dead ends: 796 [2022-07-19 16:50:32,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:50:32,646 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 1765 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 2304 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1844 SdHoareTripleChecker+Valid, 2225 SdHoareTripleChecker+Invalid, 2876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 2304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:50:32,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1844 Valid, 2225 Invalid, 2876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 2304 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-19 16:50:32,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-07-19 16:50:32,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-07-19 16:50:32,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.680952380952381) internal successors, (706), 439 states have internal predecessors, (706), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-19 16:50:32,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 889 transitions. [2022-07-19 16:50:32,702 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 889 transitions. Word has length 108 [2022-07-19 16:50:32,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:50:32,703 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 889 transitions. [2022-07-19 16:50:32,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:50:32,703 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 889 transitions. [2022-07-19 16:50:32,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-19 16:50:32,706 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:50:32,706 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:50:32,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 16:50:32,706 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:50:32,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:50:32,707 INFO L85 PathProgramCache]: Analyzing trace with hash 2037922056, now seen corresponding path program 1 times [2022-07-19 16:50:32,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:50:32,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503596976] [2022-07-19 16:50:32,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:50:32,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:50:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:32,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:50:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:32,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:32,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:50:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:32,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 16:50:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:33,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:33,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:33,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:33,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:50:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:33,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:50:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:33,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:33,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:33,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:50:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:33,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:50:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:33,053 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:50:33,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:50:33,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503596976] [2022-07-19 16:50:33,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503596976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:50:33,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:50:33,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:50:33,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025633059] [2022-07-19 16:50:33,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:50:33,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:50:33,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:50:33,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:50:33,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:50:33,055 INFO L87 Difference]: Start difference. First operand 537 states and 889 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:50:37,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:50:37,315 INFO L93 Difference]: Finished difference Result 1275 states and 2152 transitions. [2022-07-19 16:50:37,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:50:37,316 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2022-07-19 16:50:37,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:50:37,321 INFO L225 Difference]: With dead ends: 1275 [2022-07-19 16:50:37,321 INFO L226 Difference]: Without dead ends: 796 [2022-07-19 16:50:37,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:50:37,324 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 973 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 2545 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 2306 SdHoareTripleChecker+Invalid, 2876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 2545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:50:37,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 2306 Invalid, 2876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 2545 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-19 16:50:37,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-07-19 16:50:37,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-07-19 16:50:37,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.6690476190476191) internal successors, (701), 439 states have internal predecessors, (701), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-19 16:50:37,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 884 transitions. [2022-07-19 16:50:37,410 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 884 transitions. Word has length 109 [2022-07-19 16:50:37,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:50:37,410 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 884 transitions. [2022-07-19 16:50:37,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:50:37,411 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 884 transitions. [2022-07-19 16:50:37,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-19 16:50:37,414 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:50:37,415 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:50:37,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 16:50:37,415 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:50:37,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:50:37,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1361119109, now seen corresponding path program 1 times [2022-07-19 16:50:37,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:50:37,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589050973] [2022-07-19 16:50:37,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:50:37,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:50:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:37,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:50:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:37,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:37,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:50:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:37,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 16:50:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:37,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:37,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:37,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:37,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:50:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:37,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:50:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:37,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:37,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:37,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:50:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:37,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:50:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:50:37,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:50:37,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589050973] [2022-07-19 16:50:37,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589050973] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:50:37,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:50:37,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:50:37,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491950294] [2022-07-19 16:50:37,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:50:37,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:50:37,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:50:37,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:50:37,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:50:37,743 INFO L87 Difference]: Start difference. First operand 537 states and 884 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:50:41,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:50:41,629 INFO L93 Difference]: Finished difference Result 1275 states and 2147 transitions. [2022-07-19 16:50:41,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:50:41,629 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2022-07-19 16:50:41,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:50:41,634 INFO L225 Difference]: With dead ends: 1275 [2022-07-19 16:50:41,634 INFO L226 Difference]: Without dead ends: 796 [2022-07-19 16:50:41,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:50:41,637 INFO L413 NwaCegarLoop]: 890 mSDtfsCounter, 972 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 2525 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 2845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 2525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-19 16:50:41,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1051 Valid, 2299 Invalid, 2845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 2525 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-19 16:50:41,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-07-19 16:50:41,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-07-19 16:50:41,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.6571428571428573) internal successors, (696), 439 states have internal predecessors, (696), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-19 16:50:41,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 879 transitions. [2022-07-19 16:50:41,703 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 879 transitions. Word has length 110 [2022-07-19 16:50:41,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:50:41,703 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 879 transitions. [2022-07-19 16:50:41,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:50:41,704 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 879 transitions. [2022-07-19 16:50:41,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-19 16:50:41,706 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:50:41,707 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:50:41,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 16:50:41,707 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:50:41,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:50:41,708 INFO L85 PathProgramCache]: Analyzing trace with hash 103820333, now seen corresponding path program 1 times [2022-07-19 16:50:41,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:50:41,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218318064] [2022-07-19 16:50:41,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:50:41,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:50:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:41,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:50:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:41,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:41,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:50:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:41,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 16:50:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:41,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:41,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:41,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:41,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:50:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:41,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:50:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:42,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:42,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:42,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:50:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:42,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:50:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:42,017 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:50:42,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:50:42,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218318064] [2022-07-19 16:50:42,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218318064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:50:42,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:50:42,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:50:42,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096908355] [2022-07-19 16:50:42,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:50:42,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:50:42,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:50:42,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:50:42,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:50:42,019 INFO L87 Difference]: Start difference. First operand 537 states and 879 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:50:45,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:50:45,878 INFO L93 Difference]: Finished difference Result 1275 states and 2142 transitions. [2022-07-19 16:50:45,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:50:45,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2022-07-19 16:50:45,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:50:45,884 INFO L225 Difference]: With dead ends: 1275 [2022-07-19 16:50:45,884 INFO L226 Difference]: Without dead ends: 796 [2022-07-19 16:50:45,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:50:45,887 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 971 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 2502 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 2815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 2502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-19 16:50:45,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1050 Valid, 2288 Invalid, 2815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 2502 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-19 16:50:45,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-07-19 16:50:45,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-07-19 16:50:45,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.6452380952380952) internal successors, (691), 439 states have internal predecessors, (691), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-19 16:50:45,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 874 transitions. [2022-07-19 16:50:45,955 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 874 transitions. Word has length 111 [2022-07-19 16:50:45,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:50:45,955 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 874 transitions. [2022-07-19 16:50:45,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:50:45,956 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 874 transitions. [2022-07-19 16:50:45,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-19 16:50:45,959 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:50:45,959 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:50:45,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 16:50:45,959 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:50:45,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:50:45,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1968979958, now seen corresponding path program 1 times [2022-07-19 16:50:45,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:50:45,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701719722] [2022-07-19 16:50:45,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:50:45,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:50:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:46,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:50:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:46,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:46,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:50:46,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:46,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:50:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:46,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:46,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:46,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:46,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:50:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:46,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:50:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:46,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:46,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:46,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:50:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:46,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:50:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:46,301 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:50:46,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:50:46,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701719722] [2022-07-19 16:50:46,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701719722] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:50:46,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:50:46,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:50:46,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148550096] [2022-07-19 16:50:46,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:50:46,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:50:46,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:50:46,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:50:46,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:50:46,304 INFO L87 Difference]: Start difference. First operand 537 states and 874 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:50:50,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:50:50,126 INFO L93 Difference]: Finished difference Result 1275 states and 2137 transitions. [2022-07-19 16:50:50,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:50:50,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-07-19 16:50:50,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:50:50,132 INFO L225 Difference]: With dead ends: 1275 [2022-07-19 16:50:50,132 INFO L226 Difference]: Without dead ends: 796 [2022-07-19 16:50:50,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:50:50,135 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 986 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:50:50,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1065 Valid, 2303 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-19 16:50:50,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-07-19 16:50:50,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-07-19 16:50:50,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.6333333333333333) internal successors, (686), 439 states have internal predecessors, (686), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-19 16:50:50,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 869 transitions. [2022-07-19 16:50:50,237 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 869 transitions. Word has length 112 [2022-07-19 16:50:50,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:50:50,237 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 869 transitions. [2022-07-19 16:50:50,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:50:50,238 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 869 transitions. [2022-07-19 16:50:50,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-19 16:50:50,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:50:50,242 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:50:50,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 16:50:50,242 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:50:50,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:50:50,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1329589909, now seen corresponding path program 1 times [2022-07-19 16:50:50,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:50:50,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227890242] [2022-07-19 16:50:50,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:50:50,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:50:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:50,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:50:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:50,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:50,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:50:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:50,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:50:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:50,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:50,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:50,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:50,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:50:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:50,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:50:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:50,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:50,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:50,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:50:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:50,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:50:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:50,615 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:50:50,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:50:50,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227890242] [2022-07-19 16:50:50,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227890242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:50:50,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:50:50,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:50:50,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551105388] [2022-07-19 16:50:50,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:50:50,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:50:50,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:50:50,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:50:50,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:50:50,617 INFO L87 Difference]: Start difference. First operand 537 states and 869 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:50:54,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:50:54,720 INFO L93 Difference]: Finished difference Result 1290 states and 2152 transitions. [2022-07-19 16:50:54,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 16:50:54,720 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-07-19 16:50:54,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:50:54,724 INFO L225 Difference]: With dead ends: 1290 [2022-07-19 16:50:54,724 INFO L226 Difference]: Without dead ends: 817 [2022-07-19 16:50:54,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:50:54,726 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 975 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 2476 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 2756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 2476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-19 16:50:54,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1054 Valid, 2322 Invalid, 2756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 2476 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-19 16:50:54,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-07-19 16:50:54,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 539. [2022-07-19 16:50:54,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 422 states have (on average 1.6303317535545023) internal successors, (688), 441 states have internal predecessors, (688), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-19 16:50:54,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 871 transitions. [2022-07-19 16:50:54,814 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 871 transitions. Word has length 112 [2022-07-19 16:50:54,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:50:54,815 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 871 transitions. [2022-07-19 16:50:54,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:50:54,815 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 871 transitions. [2022-07-19 16:50:54,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-19 16:50:54,818 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:50:54,818 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:50:54,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 16:50:54,818 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:50:54,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:50:54,819 INFO L85 PathProgramCache]: Analyzing trace with hash 742443858, now seen corresponding path program 1 times [2022-07-19 16:50:54,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:50:54,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931491628] [2022-07-19 16:50:54,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:50:54,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:50:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:54,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:50:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:54,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:54,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:50:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:55,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:50:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:55,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:55,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:55,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:55,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:50:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:55,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:50:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:55,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:55,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:55,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:50:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:55,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:50:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:55,121 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:50:55,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:50:55,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931491628] [2022-07-19 16:50:55,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931491628] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:50:55,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:50:55,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:50:55,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89077414] [2022-07-19 16:50:55,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:50:55,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:50:55,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:50:55,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:50:55,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:50:55,123 INFO L87 Difference]: Start difference. First operand 539 states and 871 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:50:58,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:50:58,948 INFO L93 Difference]: Finished difference Result 1281 states and 2138 transitions. [2022-07-19 16:50:58,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:50:58,948 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-07-19 16:50:58,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:50:58,955 INFO L225 Difference]: With dead ends: 1281 [2022-07-19 16:50:58,955 INFO L226 Difference]: Without dead ends: 800 [2022-07-19 16:50:58,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:50:58,957 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 983 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 2457 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 2302 SdHoareTripleChecker+Invalid, 2747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 2457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:50:58,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 2302 Invalid, 2747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-19 16:50:58,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-07-19 16:50:59,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 539. [2022-07-19 16:50:59,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 422 states have (on average 1.6184834123222749) internal successors, (683), 441 states have internal predecessors, (683), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-19 16:50:59,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 866 transitions. [2022-07-19 16:50:59,056 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 866 transitions. Word has length 113 [2022-07-19 16:50:59,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:50:59,056 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 866 transitions. [2022-07-19 16:50:59,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:50:59,057 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 866 transitions. [2022-07-19 16:50:59,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-19 16:50:59,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:50:59,060 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:50:59,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 16:50:59,060 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:50:59,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:50:59,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1641457, now seen corresponding path program 1 times [2022-07-19 16:50:59,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:50:59,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835593917] [2022-07-19 16:50:59,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:50:59,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:50:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:59,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:50:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:59,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:59,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:50:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:59,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:50:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:59,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:59,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:59,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:59,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:50:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:59,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:50:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:59,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:59,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:59,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:50:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:59,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:50:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:59,390 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:50:59,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:50:59,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835593917] [2022-07-19 16:50:59,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835593917] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:50:59,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:50:59,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:50:59,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165770414] [2022-07-19 16:50:59,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:50:59,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:50:59,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:50:59,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:50:59,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:50:59,392 INFO L87 Difference]: Start difference. First operand 539 states and 866 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:51:02,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:02,868 INFO L93 Difference]: Finished difference Result 1294 states and 2149 transitions. [2022-07-19 16:51:02,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 16:51:02,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-07-19 16:51:02,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:02,872 INFO L225 Difference]: With dead ends: 1294 [2022-07-19 16:51:02,872 INFO L226 Difference]: Without dead ends: 821 [2022-07-19 16:51:02,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:51:02,874 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 1824 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 576 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 2202 SdHoareTripleChecker+Invalid, 2766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 576 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:02,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1903 Valid, 2202 Invalid, 2766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [576 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-19 16:51:02,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2022-07-19 16:51:02,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 542. [2022-07-19 16:51:02,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 425 states have (on average 1.6141176470588234) internal successors, (686), 444 states have internal predecessors, (686), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-19 16:51:02,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 869 transitions. [2022-07-19 16:51:02,953 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 869 transitions. Word has length 113 [2022-07-19 16:51:02,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:02,954 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 869 transitions. [2022-07-19 16:51:02,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:51:02,954 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 869 transitions. [2022-07-19 16:51:02,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-19 16:51:02,957 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:02,957 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:02,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 16:51:02,957 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:02,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:02,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1440959631, now seen corresponding path program 1 times [2022-07-19 16:51:02,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:02,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058458835] [2022-07-19 16:51:02,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:02,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:03,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:03,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:03,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:03,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:03,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:51:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:03,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:03,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:03,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:03,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:51:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:03,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:51:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:03,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:03,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:03,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:51:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:03,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:51:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:03,302 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:51:03,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:03,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058458835] [2022-07-19 16:51:03,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058458835] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:03,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:03,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:51:03,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005926887] [2022-07-19 16:51:03,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:03,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:51:03,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:03,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:51:03,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:51:03,304 INFO L87 Difference]: Start difference. First operand 542 states and 869 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 16:51:07,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:07,877 INFO L93 Difference]: Finished difference Result 1298 states and 2155 transitions. [2022-07-19 16:51:07,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:51:07,878 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 114 [2022-07-19 16:51:07,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:07,884 INFO L225 Difference]: With dead ends: 1298 [2022-07-19 16:51:07,884 INFO L226 Difference]: Without dead ends: 828 [2022-07-19 16:51:07,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:51:07,886 INFO L413 NwaCegarLoop]: 923 mSDtfsCounter, 1843 mSDsluCounter, 2712 mSDsCounter, 0 mSdLazyCounter, 4532 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1923 SdHoareTripleChecker+Valid, 3635 SdHoareTripleChecker+Invalid, 5117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 4532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:07,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1923 Valid, 3635 Invalid, 5117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 4532 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-19 16:51:07,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2022-07-19 16:51:07,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 553. [2022-07-19 16:51:07,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 433 states have (on average 1.6096997690531178) internal successors, (697), 454 states have internal predecessors, (697), 95 states have call successors, (95), 23 states have call predecessors, (95), 24 states have return successors, (92), 88 states have call predecessors, (92), 90 states have call successors, (92) [2022-07-19 16:51:07,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 884 transitions. [2022-07-19 16:51:07,990 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 884 transitions. Word has length 114 [2022-07-19 16:51:07,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:07,990 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 884 transitions. [2022-07-19 16:51:07,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 16:51:07,991 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 884 transitions. [2022-07-19 16:51:07,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-19 16:51:07,994 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:07,994 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:07,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 16:51:07,994 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:07,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:07,995 INFO L85 PathProgramCache]: Analyzing trace with hash -620255568, now seen corresponding path program 1 times [2022-07-19 16:51:07,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:07,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474246491] [2022-07-19 16:51:07,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:07,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:08,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:08,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:08,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:08,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:51:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:08,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:08,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:08,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:08,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:51:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:08,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:51:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:08,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:08,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:08,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:51:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:08,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:51:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:08,322 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:51:08,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:08,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474246491] [2022-07-19 16:51:08,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474246491] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:08,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:08,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:51:08,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13969794] [2022-07-19 16:51:08,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:08,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:51:08,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:08,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:51:08,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:51:08,325 INFO L87 Difference]: Start difference. First operand 553 states and 884 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:51:11,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:11,923 INFO L93 Difference]: Finished difference Result 1321 states and 2186 transitions. [2022-07-19 16:51:11,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 16:51:11,923 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-07-19 16:51:11,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:11,927 INFO L225 Difference]: With dead ends: 1321 [2022-07-19 16:51:11,927 INFO L226 Difference]: Without dead ends: 845 [2022-07-19 16:51:11,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:51:11,929 INFO L413 NwaCegarLoop]: 896 mSDtfsCounter, 1832 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1911 SdHoareTripleChecker+Valid, 2168 SdHoareTripleChecker+Invalid, 2784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:11,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1911 Valid, 2168 Invalid, 2784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-19 16:51:11,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-07-19 16:51:12,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 557. [2022-07-19 16:51:12,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 437 states have (on average 1.6018306636155606) internal successors, (700), 458 states have internal predecessors, (700), 95 states have call successors, (95), 23 states have call predecessors, (95), 24 states have return successors, (92), 88 states have call predecessors, (92), 90 states have call successors, (92) [2022-07-19 16:51:12,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 887 transitions. [2022-07-19 16:51:12,037 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 887 transitions. Word has length 114 [2022-07-19 16:51:12,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:12,037 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 887 transitions. [2022-07-19 16:51:12,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:51:12,037 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 887 transitions. [2022-07-19 16:51:12,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-19 16:51:12,040 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:12,041 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:12,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 16:51:12,041 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:12,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:12,041 INFO L85 PathProgramCache]: Analyzing trace with hash -2053472112, now seen corresponding path program 1 times [2022-07-19 16:51:12,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:12,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154740081] [2022-07-19 16:51:12,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:12,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:12,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:12,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:12,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:12,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:51:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:12,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:12,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:12,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:12,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:51:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:12,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:51:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:12,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:12,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:12,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:51:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:12,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:51:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:12,349 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:51:12,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:12,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154740081] [2022-07-19 16:51:12,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154740081] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:12,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:12,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:51:12,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747636834] [2022-07-19 16:51:12,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:12,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:51:12,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:12,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:51:12,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:51:12,351 INFO L87 Difference]: Start difference. First operand 557 states and 887 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:51:15,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:15,697 INFO L93 Difference]: Finished difference Result 1363 states and 2229 transitions. [2022-07-19 16:51:15,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 16:51:15,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-07-19 16:51:15,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:15,701 INFO L225 Difference]: With dead ends: 1363 [2022-07-19 16:51:15,701 INFO L226 Difference]: Without dead ends: 804 [2022-07-19 16:51:15,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:51:15,704 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 1733 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 2216 mSolverCounterSat, 564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 2208 SdHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 2216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:15,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1812 Valid, 2208 Invalid, 2780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [564 Valid, 2216 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-19 16:51:15,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-07-19 16:51:15,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 538. [2022-07-19 16:51:15,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 421 states have (on average 1.6104513064133017) internal successors, (678), 440 states have internal predecessors, (678), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-19 16:51:15,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 861 transitions. [2022-07-19 16:51:15,793 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 861 transitions. Word has length 114 [2022-07-19 16:51:15,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:15,793 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 861 transitions. [2022-07-19 16:51:15,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:51:15,793 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 861 transitions. [2022-07-19 16:51:15,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-19 16:51:15,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:15,796 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:15,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 16:51:15,796 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:15,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:15,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1452766988, now seen corresponding path program 1 times [2022-07-19 16:51:15,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:15,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400238726] [2022-07-19 16:51:15,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:15,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:15,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:15,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:15,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:16,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 16:51:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:16,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:16,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:16,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:16,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:51:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:16,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:51:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:16,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:16,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:16,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:51:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:16,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:51:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:16,098 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:51:16,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:16,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400238726] [2022-07-19 16:51:16,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400238726] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:16,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:16,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:51:16,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933272617] [2022-07-19 16:51:16,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:16,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:51:16,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:16,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:51:16,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:51:16,102 INFO L87 Difference]: Start difference. First operand 538 states and 861 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:51:20,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:20,029 INFO L93 Difference]: Finished difference Result 1298 states and 2144 transitions. [2022-07-19 16:51:20,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 16:51:20,030 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2022-07-19 16:51:20,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:20,033 INFO L225 Difference]: With dead ends: 1298 [2022-07-19 16:51:20,033 INFO L226 Difference]: Without dead ends: 825 [2022-07-19 16:51:20,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:51:20,035 INFO L413 NwaCegarLoop]: 896 mSDtfsCounter, 952 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 2311 SdHoareTripleChecker+Invalid, 2693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:20,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1031 Valid, 2311 Invalid, 2693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 2417 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-19 16:51:20,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2022-07-19 16:51:20,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 543. [2022-07-19 16:51:20,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 426 states have (on average 1.6032863849765258) internal successors, (683), 445 states have internal predecessors, (683), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-19 16:51:20,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 866 transitions. [2022-07-19 16:51:20,142 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 866 transitions. Word has length 115 [2022-07-19 16:51:20,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:20,142 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 866 transitions. [2022-07-19 16:51:20,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:51:20,143 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 866 transitions. [2022-07-19 16:51:20,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-19 16:51:20,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:20,145 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:20,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 16:51:20,146 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:20,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:20,146 INFO L85 PathProgramCache]: Analyzing trace with hash -565790203, now seen corresponding path program 1 times [2022-07-19 16:51:20,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:20,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017136269] [2022-07-19 16:51:20,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:20,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:20,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:20,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:20,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:20,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:51:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:20,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:20,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:20,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:20,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:51:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:20,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:51:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:20,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:20,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:20,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:51:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:20,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:51:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:20,572 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:51:20,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:20,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017136269] [2022-07-19 16:51:20,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017136269] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:20,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:20,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-19 16:51:20,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287954196] [2022-07-19 16:51:20,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:20,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 16:51:20,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:20,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 16:51:20,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:51:20,575 INFO L87 Difference]: Start difference. First operand 543 states and 866 transitions. Second operand has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 16:51:29,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:29,748 INFO L93 Difference]: Finished difference Result 1551 states and 2689 transitions. [2022-07-19 16:51:29,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 16:51:29,748 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 116 [2022-07-19 16:51:29,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:29,755 INFO L225 Difference]: With dead ends: 1551 [2022-07-19 16:51:29,755 INFO L226 Difference]: Without dead ends: 1086 [2022-07-19 16:51:29,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2022-07-19 16:51:29,759 INFO L413 NwaCegarLoop]: 998 mSDtfsCounter, 3000 mSDsluCounter, 3557 mSDsCounter, 0 mSdLazyCounter, 9961 mSolverCounterSat, 1598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3000 SdHoareTripleChecker+Valid, 4555 SdHoareTripleChecker+Invalid, 11559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1598 IncrementalHoareTripleChecker+Valid, 9961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:29,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3000 Valid, 4555 Invalid, 11559 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1598 Valid, 9961 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-07-19 16:51:29,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2022-07-19 16:51:29,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 552. [2022-07-19 16:51:29,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 433 states have (on average 1.5935334872979214) internal successors, (690), 451 states have internal predecessors, (690), 94 states have call successors, (94), 23 states have call predecessors, (94), 24 states have return successors, (108), 90 states have call predecessors, (108), 89 states have call successors, (108) [2022-07-19 16:51:29,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 892 transitions. [2022-07-19 16:51:29,881 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 892 transitions. Word has length 116 [2022-07-19 16:51:29,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:29,881 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 892 transitions. [2022-07-19 16:51:29,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 16:51:29,881 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 892 transitions. [2022-07-19 16:51:29,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-19 16:51:29,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:29,884 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:29,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 16:51:29,884 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:29,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:29,885 INFO L85 PathProgramCache]: Analyzing trace with hash -182072457, now seen corresponding path program 1 times [2022-07-19 16:51:29,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:29,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640175816] [2022-07-19 16:51:29,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:29,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:29,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:29,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:29,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:30,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:51:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:30,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:30,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:30,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:30,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:51:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:30,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 16:51:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:30,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:30,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:30,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 16:51:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:30,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 16:51:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:30,270 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-19 16:51:30,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:30,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640175816] [2022-07-19 16:51:30,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640175816] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:51:30,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510283332] [2022-07-19 16:51:30,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:30,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:51:30,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:51:30,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:51:30,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 16:51:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:30,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 16:51:30,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:51:30,529 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 16:51:30,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:51:30,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510283332] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:30,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:51:30,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-07-19 16:51:30,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168242310] [2022-07-19 16:51:30,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:30,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 16:51:30,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:30,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 16:51:30,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:51:30,531 INFO L87 Difference]: Start difference. First operand 552 states and 892 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:51:30,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:30,785 INFO L93 Difference]: Finished difference Result 1495 states and 2503 transitions. [2022-07-19 16:51:30,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 16:51:30,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 117 [2022-07-19 16:51:30,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:30,794 INFO L225 Difference]: With dead ends: 1495 [2022-07-19 16:51:30,794 INFO L226 Difference]: Without dead ends: 1021 [2022-07-19 16:51:30,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:51:30,796 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 769 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:30,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 2353 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:51:30,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2022-07-19 16:51:30,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 1001. [2022-07-19 16:51:30,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 782 states have (on average 1.6317135549872124) internal successors, (1276), 812 states have internal predecessors, (1276), 174 states have call successors, (174), 40 states have call predecessors, (174), 44 states have return successors, (213), 174 states have call predecessors, (213), 169 states have call successors, (213) [2022-07-19 16:51:30,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1663 transitions. [2022-07-19 16:51:30,987 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1663 transitions. Word has length 117 [2022-07-19 16:51:30,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:30,988 INFO L495 AbstractCegarLoop]: Abstraction has 1001 states and 1663 transitions. [2022-07-19 16:51:30,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:51:30,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1663 transitions. [2022-07-19 16:51:30,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-19 16:51:30,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:30,990 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:31,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 16:51:31,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-19 16:51:31,215 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:31,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:31,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1741155577, now seen corresponding path program 1 times [2022-07-19 16:51:31,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:31,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486021623] [2022-07-19 16:51:31,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:31,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:31,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:31,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:31,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:31,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:51:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:31,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:31,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:31,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:31,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:51:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:31,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 16:51:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:31,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:31,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:31,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 16:51:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:31,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 16:51:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:31,622 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-19 16:51:31,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:31,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486021623] [2022-07-19 16:51:31,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486021623] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:51:31,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156286415] [2022-07-19 16:51:31,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:31,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:51:31,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:51:31,628 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:51:31,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 16:51:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:31,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 16:51:31,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:51:32,033 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 16:51:32,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:51:32,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156286415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:32,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:51:32,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2022-07-19 16:51:32,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510564251] [2022-07-19 16:51:32,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:32,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:51:32,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:32,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:51:32,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:51:32,036 INFO L87 Difference]: Start difference. First operand 1001 states and 1663 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 16:51:32,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:32,681 INFO L93 Difference]: Finished difference Result 1944 states and 3322 transitions. [2022-07-19 16:51:32,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:51:32,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2022-07-19 16:51:32,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:32,688 INFO L225 Difference]: With dead ends: 1944 [2022-07-19 16:51:32,688 INFO L226 Difference]: Without dead ends: 1021 [2022-07-19 16:51:32,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:51:32,692 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 795 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:32,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 2135 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 16:51:32,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2022-07-19 16:51:32,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 1017. [2022-07-19 16:51:32,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 796 states have (on average 1.6331658291457287) internal successors, (1300), 826 states have internal predecessors, (1300), 174 states have call successors, (174), 42 states have call predecessors, (174), 46 states have return successors, (203), 174 states have call predecessors, (203), 169 states have call successors, (203) [2022-07-19 16:51:32,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1677 transitions. [2022-07-19 16:51:32,884 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1677 transitions. Word has length 117 [2022-07-19 16:51:32,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:32,884 INFO L495 AbstractCegarLoop]: Abstraction has 1017 states and 1677 transitions. [2022-07-19 16:51:32,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 16:51:32,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1677 transitions. [2022-07-19 16:51:32,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-19 16:51:32,887 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:32,887 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:32,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-19 16:51:33,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:51:33,107 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:33,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:33,108 INFO L85 PathProgramCache]: Analyzing trace with hash -924685726, now seen corresponding path program 1 times [2022-07-19 16:51:33,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:33,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48450105] [2022-07-19 16:51:33,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:33,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:33,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:33,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:33,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:33,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:51:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:33,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:33,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:33,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:33,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:51:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:33,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 16:51:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:33,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:33,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:33,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 16:51:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:33,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 16:51:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:33,481 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 16:51:33,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:33,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48450105] [2022-07-19 16:51:33,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48450105] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:51:33,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131770135] [2022-07-19 16:51:33,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:33,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:51:33,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:51:33,484 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:51:33,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 16:51:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:33,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 1434 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 16:51:33,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:51:33,850 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 16:51:33,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:51:33,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131770135] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:33,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:51:33,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2022-07-19 16:51:33,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059518472] [2022-07-19 16:51:33,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:33,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:51:33,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:33,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:51:33,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:51:33,852 INFO L87 Difference]: Start difference. First operand 1017 states and 1677 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 16:51:34,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:34,340 INFO L93 Difference]: Finished difference Result 1976 states and 3318 transitions. [2022-07-19 16:51:34,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:51:34,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2022-07-19 16:51:34,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:34,347 INFO L225 Difference]: With dead ends: 1976 [2022-07-19 16:51:34,347 INFO L226 Difference]: Without dead ends: 1037 [2022-07-19 16:51:34,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:51:34,351 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 799 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:34,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 2135 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 16:51:34,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2022-07-19 16:51:34,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1037. [2022-07-19 16:51:34,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 812 states have (on average 1.6330049261083743) internal successors, (1326), 844 states have internal predecessors, (1326), 174 states have call successors, (174), 44 states have call predecessors, (174), 50 states have return successors, (205), 174 states have call predecessors, (205), 169 states have call successors, (205) [2022-07-19 16:51:34,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1705 transitions. [2022-07-19 16:51:34,557 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1705 transitions. Word has length 122 [2022-07-19 16:51:34,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:34,557 INFO L495 AbstractCegarLoop]: Abstraction has 1037 states and 1705 transitions. [2022-07-19 16:51:34,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 16:51:34,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1705 transitions. [2022-07-19 16:51:34,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-19 16:51:34,559 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:34,559 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:34,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 16:51:34,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:51:34,775 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:34,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:34,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1525325524, now seen corresponding path program 1 times [2022-07-19 16:51:34,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:34,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547504805] [2022-07-19 16:51:34,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:34,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:34,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:34,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:34,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:35,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:51:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:35,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:35,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:35,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:35,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 16:51:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:35,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 16:51:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:35,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:35,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:35,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 16:51:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:35,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 16:51:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:35,163 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-19 16:51:35,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:35,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547504805] [2022-07-19 16:51:35,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547504805] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:51:35,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985987874] [2022-07-19 16:51:35,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:35,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:51:35,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:51:35,165 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:51:35,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 16:51:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:35,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 1435 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 16:51:35,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:51:35,522 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 16:51:35,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:51:35,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985987874] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:35,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:51:35,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2022-07-19 16:51:35,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352787745] [2022-07-19 16:51:35,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:35,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:51:35,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:35,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:51:35,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:51:35,524 INFO L87 Difference]: Start difference. First operand 1037 states and 1705 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 16:51:35,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:35,981 INFO L93 Difference]: Finished difference Result 2016 states and 3368 transitions. [2022-07-19 16:51:35,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:51:35,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2022-07-19 16:51:35,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:35,992 INFO L225 Difference]: With dead ends: 2016 [2022-07-19 16:51:35,992 INFO L226 Difference]: Without dead ends: 1057 [2022-07-19 16:51:35,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:51:35,997 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 787 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:35,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 2135 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 16:51:35,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2022-07-19 16:51:36,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1057. [2022-07-19 16:51:36,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 828 states have (on average 1.6328502415458936) internal successors, (1352), 862 states have internal predecessors, (1352), 174 states have call successors, (174), 46 states have call predecessors, (174), 54 states have return successors, (207), 174 states have call predecessors, (207), 169 states have call successors, (207) [2022-07-19 16:51:36,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1733 transitions. [2022-07-19 16:51:36,168 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1733 transitions. Word has length 123 [2022-07-19 16:51:36,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:36,168 INFO L495 AbstractCegarLoop]: Abstraction has 1057 states and 1733 transitions. [2022-07-19 16:51:36,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 16:51:36,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1733 transitions. [2022-07-19 16:51:36,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 16:51:36,170 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:36,170 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:36,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 16:51:36,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:51:36,371 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:36,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:36,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1822492423, now seen corresponding path program 1 times [2022-07-19 16:51:36,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:36,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002788803] [2022-07-19 16:51:36,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:36,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:36,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:36,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:36,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:36,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:51:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:36,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:36,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:36,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:36,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:51:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:36,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:51:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:36,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:36,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:36,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:51:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:36,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 16:51:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:36,840 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 16:51:36,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:36,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002788803] [2022-07-19 16:51:36,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002788803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:36,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:36,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-19 16:51:36,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18930003] [2022-07-19 16:51:36,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:36,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-19 16:51:36,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:36,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-19 16:51:36,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:51:36,842 INFO L87 Difference]: Start difference. First operand 1057 states and 1733 transitions. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-19 16:51:52,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:52,719 INFO L93 Difference]: Finished difference Result 4689 states and 8371 transitions. [2022-07-19 16:51:52,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-19 16:51:52,720 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) Word has length 124 [2022-07-19 16:51:52,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:52,741 INFO L225 Difference]: With dead ends: 4689 [2022-07-19 16:51:52,741 INFO L226 Difference]: Without dead ends: 3710 [2022-07-19 16:51:52,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=418, Invalid=1838, Unknown=0, NotChecked=0, Total=2256 [2022-07-19 16:51:52,749 INFO L413 NwaCegarLoop]: 1869 mSDtfsCounter, 6535 mSDsluCounter, 7090 mSDsCounter, 0 mSdLazyCounter, 18233 mSolverCounterSat, 3191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6541 SdHoareTripleChecker+Valid, 8959 SdHoareTripleChecker+Invalid, 21424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3191 IncrementalHoareTripleChecker+Valid, 18233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:52,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6541 Valid, 8959 Invalid, 21424 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3191 Valid, 18233 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2022-07-19 16:51:52,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3710 states. [2022-07-19 16:51:53,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3710 to 2370. [2022-07-19 16:51:53,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2370 states, 1810 states have (on average 1.6397790055248618) internal successors, (2968), 1892 states have internal predecessors, (2968), 442 states have call successors, (442), 88 states have call predecessors, (442), 117 states have return successors, (562), 447 states have call predecessors, (562), 437 states have call successors, (562) [2022-07-19 16:51:53,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2370 states to 2370 states and 3972 transitions. [2022-07-19 16:51:53,373 INFO L78 Accepts]: Start accepts. Automaton has 2370 states and 3972 transitions. Word has length 124 [2022-07-19 16:51:53,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:53,373 INFO L495 AbstractCegarLoop]: Abstraction has 2370 states and 3972 transitions. [2022-07-19 16:51:53,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-19 16:51:53,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2370 states and 3972 transitions. [2022-07-19 16:51:53,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 16:51:53,378 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:53,378 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:53,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 16:51:53,378 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:53,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:53,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1287382378, now seen corresponding path program 1 times [2022-07-19 16:51:53,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:53,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106961559] [2022-07-19 16:51:53,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:53,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:53,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:53,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:53,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:53,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:51:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:53,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:53,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:53,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:53,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:51:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:53,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:51:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:53,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:53,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:53,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:51:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:53,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 16:51:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:53,693 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 16:51:53,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:53,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106961559] [2022-07-19 16:51:53,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106961559] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:53,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:53,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:51:53,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855978434] [2022-07-19 16:51:53,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:53,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:51:53,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:53,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:51:53,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:51:53,695 INFO L87 Difference]: Start difference. First operand 2370 states and 3972 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:51:58,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:58,188 INFO L93 Difference]: Finished difference Result 5380 states and 9288 transitions. [2022-07-19 16:51:58,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 16:51:58,189 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 124 [2022-07-19 16:51:58,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:58,204 INFO L225 Difference]: With dead ends: 5380 [2022-07-19 16:51:58,204 INFO L226 Difference]: Without dead ends: 3156 [2022-07-19 16:51:58,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:51:58,213 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 929 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 2431 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 2398 SdHoareTripleChecker+Invalid, 2696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 2431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:58,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 2398 Invalid, 2696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 2431 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-19 16:51:58,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3156 states. [2022-07-19 16:51:58,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3156 to 2376. [2022-07-19 16:51:58,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2376 states, 1816 states have (on average 1.6376651982378854) internal successors, (2974), 1898 states have internal predecessors, (2974), 442 states have call successors, (442), 88 states have call predecessors, (442), 117 states have return successors, (562), 447 states have call predecessors, (562), 437 states have call successors, (562) [2022-07-19 16:51:58,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2376 states to 2376 states and 3978 transitions. [2022-07-19 16:51:58,718 INFO L78 Accepts]: Start accepts. Automaton has 2376 states and 3978 transitions. Word has length 124 [2022-07-19 16:51:58,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:58,718 INFO L495 AbstractCegarLoop]: Abstraction has 2376 states and 3978 transitions. [2022-07-19 16:51:58,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 16:51:58,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2376 states and 3978 transitions. [2022-07-19 16:51:58,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-19 16:51:58,722 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:58,723 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:58,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 16:51:58,723 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:58,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:58,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1954972024, now seen corresponding path program 1 times [2022-07-19 16:51:58,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:58,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534952472] [2022-07-19 16:51:58,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:58,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:58,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:58,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:58,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:58,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:51:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:58,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:51:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 16:51:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 16:51:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 16:51:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,069 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-19 16:51:59,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:59,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534952472] [2022-07-19 16:51:59,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534952472] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:59,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:59,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:51:59,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062948037] [2022-07-19 16:51:59,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:59,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:51:59,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:59,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:51:59,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:51:59,072 INFO L87 Difference]: Start difference. First operand 2376 states and 3978 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-19 16:52:06,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:06,298 INFO L93 Difference]: Finished difference Result 6423 states and 11390 transitions. [2022-07-19 16:52:06,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 16:52:06,299 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 130 [2022-07-19 16:52:06,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:06,320 INFO L225 Difference]: With dead ends: 6423 [2022-07-19 16:52:06,320 INFO L226 Difference]: Without dead ends: 4140 [2022-07-19 16:52:06,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2022-07-19 16:52:06,329 INFO L413 NwaCegarLoop]: 1147 mSDtfsCounter, 2331 mSDsluCounter, 3146 mSDsCounter, 0 mSdLazyCounter, 4601 mSolverCounterSat, 1144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2341 SdHoareTripleChecker+Valid, 4293 SdHoareTripleChecker+Invalid, 5745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1144 IncrementalHoareTripleChecker+Valid, 4601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:06,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2341 Valid, 4293 Invalid, 5745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1144 Valid, 4601 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-19 16:52:06,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2022-07-19 16:52:06,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 2396. [2022-07-19 16:52:06,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2396 states, 1832 states have (on average 1.6320960698689957) internal successors, (2990), 1914 states have internal predecessors, (2990), 442 states have call successors, (442), 88 states have call predecessors, (442), 121 states have return successors, (568), 451 states have call predecessors, (568), 437 states have call successors, (568) [2022-07-19 16:52:06,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 4000 transitions. [2022-07-19 16:52:06,903 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 4000 transitions. Word has length 130 [2022-07-19 16:52:06,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:06,904 INFO L495 AbstractCegarLoop]: Abstraction has 2396 states and 4000 transitions. [2022-07-19 16:52:06,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-19 16:52:06,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 4000 transitions. [2022-07-19 16:52:06,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-19 16:52:06,908 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:06,908 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:06,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 16:52:06,908 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:06,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:06,909 INFO L85 PathProgramCache]: Analyzing trace with hash -934508158, now seen corresponding path program 1 times [2022-07-19 16:52:06,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:06,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296859107] [2022-07-19 16:52:06,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:06,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:06,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:07,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:07,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:07,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 16:52:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:07,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:07,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:07,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:07,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:52:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:07,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:52:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:07,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:07,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:07,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:52:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:07,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 16:52:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:07,198 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 16:52:07,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:07,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296859107] [2022-07-19 16:52:07,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296859107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:07,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:07,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:52:07,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777340176] [2022-07-19 16:52:07,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:07,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:52:07,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:07,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:52:07,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:52:07,200 INFO L87 Difference]: Start difference. First operand 2396 states and 4000 transitions. Second operand has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 16:52:11,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:11,782 INFO L93 Difference]: Finished difference Result 3814 states and 6456 transitions. [2022-07-19 16:52:11,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:52:11,782 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 130 [2022-07-19 16:52:11,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:11,790 INFO L225 Difference]: With dead ends: 3814 [2022-07-19 16:52:11,790 INFO L226 Difference]: Without dead ends: 1473 [2022-07-19 16:52:11,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:52:11,796 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 1748 mSDsluCounter, 2651 mSDsCounter, 0 mSdLazyCounter, 4420 mSolverCounterSat, 566 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1824 SdHoareTripleChecker+Valid, 3545 SdHoareTripleChecker+Invalid, 4986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 566 IncrementalHoareTripleChecker+Valid, 4420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:11,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1824 Valid, 3545 Invalid, 4986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [566 Valid, 4420 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-19 16:52:11,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2022-07-19 16:52:12,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1095. [2022-07-19 16:52:12,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 858 states have (on average 1.6351981351981353) internal successors, (1403), 896 states have internal predecessors, (1403), 180 states have call successors, (180), 46 states have call predecessors, (180), 56 states have return successors, (216), 176 states have call predecessors, (216), 175 states have call successors, (216) [2022-07-19 16:52:12,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1799 transitions. [2022-07-19 16:52:12,108 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1799 transitions. Word has length 130 [2022-07-19 16:52:12,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:12,109 INFO L495 AbstractCegarLoop]: Abstraction has 1095 states and 1799 transitions. [2022-07-19 16:52:12,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 16:52:12,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1799 transitions. [2022-07-19 16:52:12,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-19 16:52:12,112 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:12,112 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:12,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 16:52:12,112 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:12,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:12,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1211575526, now seen corresponding path program 1 times [2022-07-19 16:52:12,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:12,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087993311] [2022-07-19 16:52:12,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:12,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:12,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:12,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:12,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:12,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:52:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:12,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:12,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:12,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:12,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:52:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:12,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:12,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:52:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:12,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:12,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:12,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 16:52:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:12,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 16:52:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:12,511 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-19 16:52:12,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:12,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087993311] [2022-07-19 16:52:12,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087993311] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:52:12,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698493390] [2022-07-19 16:52:12,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:12,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:52:12,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:52:12,516 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:52:12,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 16:52:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:12,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 16:52:12,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:52:12,915 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-19 16:52:12,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:52:12,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698493390] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:12,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:52:12,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 16 [2022-07-19 16:52:12,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473150375] [2022-07-19 16:52:12,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:12,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:52:12,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:12,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:52:12,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:52:12,918 INFO L87 Difference]: Start difference. First operand 1095 states and 1799 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-19 16:52:13,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:13,311 INFO L93 Difference]: Finished difference Result 1176 states and 1935 transitions. [2022-07-19 16:52:13,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:52:13,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 133 [2022-07-19 16:52:13,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:13,318 INFO L225 Difference]: With dead ends: 1176 [2022-07-19 16:52:13,319 INFO L226 Difference]: Without dead ends: 1161 [2022-07-19 16:52:13,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:52:13,319 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 795 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:13,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 1478 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 16:52:13,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2022-07-19 16:52:13,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1101. [2022-07-19 16:52:13,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 864 states have (on average 1.630787037037037) internal successors, (1409), 902 states have internal predecessors, (1409), 180 states have call successors, (180), 46 states have call predecessors, (180), 56 states have return successors, (216), 176 states have call predecessors, (216), 175 states have call successors, (216) [2022-07-19 16:52:13,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1805 transitions. [2022-07-19 16:52:13,511 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1805 transitions. Word has length 133 [2022-07-19 16:52:13,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:13,511 INFO L495 AbstractCegarLoop]: Abstraction has 1101 states and 1805 transitions. [2022-07-19 16:52:13,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-19 16:52:13,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1805 transitions. [2022-07-19 16:52:13,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-19 16:52:13,512 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:13,513 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:13,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-19 16:52:13,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-19 16:52:13,713 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:13,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:13,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1528372511, now seen corresponding path program 1 times [2022-07-19 16:52:13,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:13,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829338282] [2022-07-19 16:52:13,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:13,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:13,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:13,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:13,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:13,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:52:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:13,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:14,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:14,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:14,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:52:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:14,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:14,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:52:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:14,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:14,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:14,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 16:52:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:14,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 16:52:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:14,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 16:52:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:14,105 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-19 16:52:14,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:14,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829338282] [2022-07-19 16:52:14,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829338282] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:52:14,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932499236] [2022-07-19 16:52:14,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:14,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:52:14,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:52:14,108 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:52:14,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 16:52:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:14,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 16:52:14,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:52:14,362 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-19 16:52:14,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:52:14,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932499236] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:14,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:52:14,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2022-07-19 16:52:14,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79925722] [2022-07-19 16:52:14,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:14,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:52:14,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:14,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:52:14,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:52:14,364 INFO L87 Difference]: Start difference. First operand 1101 states and 1805 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-19 16:52:14,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:14,639 INFO L93 Difference]: Finished difference Result 1120 states and 1829 transitions. [2022-07-19 16:52:14,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:52:14,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 139 [2022-07-19 16:52:14,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:14,648 INFO L225 Difference]: With dead ends: 1120 [2022-07-19 16:52:14,649 INFO L226 Difference]: Without dead ends: 1105 [2022-07-19 16:52:14,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-07-19 16:52:14,650 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 37 mSDsluCounter, 2452 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3286 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:14,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3286 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:52:14,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-07-19 16:52:14,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1101. [2022-07-19 16:52:14,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 864 states have (on average 1.6284722222222223) internal successors, (1407), 902 states have internal predecessors, (1407), 180 states have call successors, (180), 46 states have call predecessors, (180), 56 states have return successors, (216), 176 states have call predecessors, (216), 175 states have call successors, (216) [2022-07-19 16:52:14,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1803 transitions. [2022-07-19 16:52:14,853 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1803 transitions. Word has length 139 [2022-07-19 16:52:14,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:14,853 INFO L495 AbstractCegarLoop]: Abstraction has 1101 states and 1803 transitions. [2022-07-19 16:52:14,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-19 16:52:14,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1803 transitions. [2022-07-19 16:52:14,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-19 16:52:14,855 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:14,855 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:14,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 16:52:15,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-19 16:52:15,068 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:15,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:15,068 INFO L85 PathProgramCache]: Analyzing trace with hash -106409074, now seen corresponding path program 1 times [2022-07-19 16:52:15,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:15,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342969634] [2022-07-19 16:52:15,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:15,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:52:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:52:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:52:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 16:52:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 16:52:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 16:52:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 16:52:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,451 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 16:52:15,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:15,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342969634] [2022-07-19 16:52:15,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342969634] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:52:15,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879345501] [2022-07-19 16:52:15,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:15,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:52:15,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:52:15,456 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:52:15,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 16:52:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 1524 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 16:52:15,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:52:15,793 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-19 16:52:15,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:52:15,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879345501] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:15,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:52:15,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-07-19 16:52:15,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156879379] [2022-07-19 16:52:15,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:15,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:52:15,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:15,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:52:15,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:52:15,794 INFO L87 Difference]: Start difference. First operand 1101 states and 1803 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 16:52:16,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:16,290 INFO L93 Difference]: Finished difference Result 2134 states and 3575 transitions. [2022-07-19 16:52:16,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:52:16,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 150 [2022-07-19 16:52:16,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:16,296 INFO L225 Difference]: With dead ends: 2134 [2022-07-19 16:52:16,296 INFO L226 Difference]: Without dead ends: 1105 [2022-07-19 16:52:16,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:52:16,299 INFO L413 NwaCegarLoop]: 804 mSDtfsCounter, 762 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 2087 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:16,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 2087 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 16:52:16,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-07-19 16:52:16,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1105. [2022-07-19 16:52:16,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 866 states have (on average 1.620092378752887) internal successors, (1403), 906 states have internal predecessors, (1403), 180 states have call successors, (180), 46 states have call predecessors, (180), 58 states have return successors, (218), 176 states have call predecessors, (218), 175 states have call successors, (218) [2022-07-19 16:52:16,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1801 transitions. [2022-07-19 16:52:16,512 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1801 transitions. Word has length 150 [2022-07-19 16:52:16,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:16,513 INFO L495 AbstractCegarLoop]: Abstraction has 1105 states and 1801 transitions. [2022-07-19 16:52:16,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 16:52:16,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1801 transitions. [2022-07-19 16:52:16,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-19 16:52:16,515 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:16,515 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:16,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 16:52:16,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:52:16,724 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:16,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:16,724 INFO L85 PathProgramCache]: Analyzing trace with hash -413231220, now seen corresponding path program 1 times [2022-07-19 16:52:16,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:16,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066961075] [2022-07-19 16:52:16,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:16,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:16,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:16,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:16,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:16,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:52:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:17,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:17,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:17,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:17,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:52:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:17,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:17,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:52:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:17,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:17,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:17,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 16:52:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:17,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 16:52:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:17,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 16:52:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:17,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 16:52:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:17,122 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 16:52:17,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:17,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066961075] [2022-07-19 16:52:17,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066961075] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:52:17,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371104095] [2022-07-19 16:52:17,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:17,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:52:17,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:52:17,128 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:52:17,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 16:52:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:17,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 1526 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 16:52:17,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:52:17,546 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 16:52:17,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:52:17,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371104095] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:17,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:52:17,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 16 [2022-07-19 16:52:17,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688184853] [2022-07-19 16:52:17,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:17,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:52:17,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:17,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:52:17,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:52:17,549 INFO L87 Difference]: Start difference. First operand 1105 states and 1801 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 6 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-19 16:52:18,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:18,963 INFO L93 Difference]: Finished difference Result 2737 states and 4479 transitions. [2022-07-19 16:52:18,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:52:18,964 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 6 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 150 [2022-07-19 16:52:18,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:18,969 INFO L225 Difference]: With dead ends: 2737 [2022-07-19 16:52:18,969 INFO L226 Difference]: Without dead ends: 1704 [2022-07-19 16:52:18,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-07-19 16:52:18,972 INFO L413 NwaCegarLoop]: 965 mSDtfsCounter, 1470 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1619 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 1987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 1619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:18,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1571 Valid, 1809 Invalid, 1987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 1619 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 16:52:18,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2022-07-19 16:52:19,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1655. [2022-07-19 16:52:19,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1241 states have (on average 1.5793714746172443) internal successors, (1960), 1316 states have internal predecessors, (1960), 323 states have call successors, (323), 66 states have call predecessors, (323), 90 states have return successors, (386), 320 states have call predecessors, (386), 318 states have call successors, (386) [2022-07-19 16:52:19,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2669 transitions. [2022-07-19 16:52:19,375 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2669 transitions. Word has length 150 [2022-07-19 16:52:19,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:19,375 INFO L495 AbstractCegarLoop]: Abstraction has 1655 states and 2669 transitions. [2022-07-19 16:52:19,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 6 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-19 16:52:19,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2669 transitions. [2022-07-19 16:52:19,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-19 16:52:19,378 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:19,378 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:19,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-19 16:52:19,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-19 16:52:19,599 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:19,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:19,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1300454066, now seen corresponding path program 1 times [2022-07-19 16:52:19,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:19,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944253140] [2022-07-19 16:52:19,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:19,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:19,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:19,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:19,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:19,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:52:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:19,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:19,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:19,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:19,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:52:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:19,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:19,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:52:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:19,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:19,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:19,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 16:52:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:19,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 16:52:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:19,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 16:52:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:19,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 16:52:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:19,970 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 16:52:19,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:19,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944253140] [2022-07-19 16:52:19,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944253140] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:52:19,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956337321] [2022-07-19 16:52:19,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:19,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:52:19,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:52:19,972 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:52:19,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 16:52:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:20,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 1529 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-19 16:52:20,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:52:20,386 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 16:52:20,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:52:20,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956337321] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:20,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:52:20,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 18 [2022-07-19 16:52:20,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058389542] [2022-07-19 16:52:20,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:20,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 16:52:20,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:20,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 16:52:20,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-07-19 16:52:20,388 INFO L87 Difference]: Start difference. First operand 1655 states and 2669 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-19 16:52:22,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:22,986 INFO L93 Difference]: Finished difference Result 3699 states and 6056 transitions. [2022-07-19 16:52:22,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 16:52:22,986 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 150 [2022-07-19 16:52:22,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:22,992 INFO L225 Difference]: With dead ends: 3699 [2022-07-19 16:52:22,993 INFO L226 Difference]: Without dead ends: 2118 [2022-07-19 16:52:22,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2022-07-19 16:52:22,997 INFO L413 NwaCegarLoop]: 1176 mSDtfsCounter, 2855 mSDsluCounter, 2324 mSDsCounter, 0 mSdLazyCounter, 3685 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2931 SdHoareTripleChecker+Valid, 3500 SdHoareTripleChecker+Invalid, 4266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 3685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:22,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2931 Valid, 3500 Invalid, 4266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [581 Valid, 3685 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 16:52:22,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2022-07-19 16:52:23,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 1965. [2022-07-19 16:52:23,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1965 states, 1479 states have (on average 1.5848546315077756) internal successors, (2344), 1565 states have internal predecessors, (2344), 379 states have call successors, (379), 75 states have call predecessors, (379), 106 states have return successors, (462), 372 states have call predecessors, (462), 374 states have call successors, (462) [2022-07-19 16:52:23,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 3185 transitions. [2022-07-19 16:52:23,526 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 3185 transitions. Word has length 150 [2022-07-19 16:52:23,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:23,527 INFO L495 AbstractCegarLoop]: Abstraction has 1965 states and 3185 transitions. [2022-07-19 16:52:23,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-19 16:52:23,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 3185 transitions. [2022-07-19 16:52:23,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-19 16:52:23,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:23,530 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:23,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-19 16:52:23,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:52:23,747 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:23,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:23,748 INFO L85 PathProgramCache]: Analyzing trace with hash 2146278543, now seen corresponding path program 1 times [2022-07-19 16:52:23,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:23,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634046937] [2022-07-19 16:52:23,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:23,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:23,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:23,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:23,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:23,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:52:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:24,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:24,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:24,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:24,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:52:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:24,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:24,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:52:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:24,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:24,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:24,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:52:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:24,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 16:52:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:24,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 16:52:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:24,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 16:52:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:24,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 16:52:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:24,087 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 16:52:24,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:24,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634046937] [2022-07-19 16:52:24,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634046937] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:24,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:24,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 16:52:24,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935571002] [2022-07-19 16:52:24,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:24,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 16:52:24,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:24,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 16:52:24,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:52:24,089 INFO L87 Difference]: Start difference. First operand 1965 states and 3185 transitions. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-19 16:52:33,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:33,521 INFO L93 Difference]: Finished difference Result 4636 states and 7800 transitions. [2022-07-19 16:52:33,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 16:52:33,522 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 155 [2022-07-19 16:52:33,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:33,529 INFO L225 Difference]: With dead ends: 4636 [2022-07-19 16:52:33,530 INFO L226 Difference]: Without dead ends: 2745 [2022-07-19 16:52:33,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-07-19 16:52:33,534 INFO L413 NwaCegarLoop]: 1015 mSDtfsCounter, 4560 mSDsluCounter, 3537 mSDsCounter, 0 mSdLazyCounter, 6455 mSolverCounterSat, 1450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4622 SdHoareTripleChecker+Valid, 4552 SdHoareTripleChecker+Invalid, 7905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1450 IncrementalHoareTripleChecker+Valid, 6455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:33,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4622 Valid, 4552 Invalid, 7905 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1450 Valid, 6455 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-07-19 16:52:33,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2022-07-19 16:52:34,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2110. [2022-07-19 16:52:34,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2110 states, 1601 states have (on average 1.589631480324797) internal successors, (2545), 1687 states have internal predecessors, (2545), 393 states have call successors, (393), 84 states have call predecessors, (393), 115 states have return successors, (482), 386 states have call predecessors, (482), 388 states have call successors, (482) [2022-07-19 16:52:34,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 3420 transitions. [2022-07-19 16:52:34,044 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 3420 transitions. Word has length 155 [2022-07-19 16:52:34,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:34,044 INFO L495 AbstractCegarLoop]: Abstraction has 2110 states and 3420 transitions. [2022-07-19 16:52:34,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-19 16:52:34,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 3420 transitions. [2022-07-19 16:52:34,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-19 16:52:34,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:34,046 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:34,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-19 16:52:34,047 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:34,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:34,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1260133001, now seen corresponding path program 1 times [2022-07-19 16:52:34,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:34,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278057141] [2022-07-19 16:52:34,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:34,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:52:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:52:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:52:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:52:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 16:52:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:52:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 16:52:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 16:52:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 16:52:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,446 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 16:52:34,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:34,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278057141] [2022-07-19 16:52:34,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278057141] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:52:34,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660808981] [2022-07-19 16:52:34,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:34,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:52:34,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:52:34,449 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:52:34,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-19 16:52:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:34,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 1566 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 16:52:34,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:52:34,774 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-19 16:52:34,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:52:34,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660808981] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:34,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:52:34,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-07-19 16:52:34,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124236390] [2022-07-19 16:52:34,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:34,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:52:34,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:34,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:52:34,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:52:34,776 INFO L87 Difference]: Start difference. First operand 2110 states and 3420 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-19 16:52:36,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:36,836 INFO L93 Difference]: Finished difference Result 6715 states and 11133 transitions. [2022-07-19 16:52:36,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:52:36,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 160 [2022-07-19 16:52:36,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:36,852 INFO L225 Difference]: With dead ends: 6715 [2022-07-19 16:52:36,852 INFO L226 Difference]: Without dead ends: 4677 [2022-07-19 16:52:36,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 195 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:52:36,859 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 1817 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:36,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1890 Valid, 1414 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 16:52:36,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4677 states. [2022-07-19 16:52:37,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4677 to 4453. [2022-07-19 16:52:37,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4453 states, 3315 states have (on average 1.5915535444947209) internal successors, (5276), 3514 states have internal predecessors, (5276), 896 states have call successors, (896), 163 states have call predecessors, (896), 241 states have return successors, (1179), 891 states have call predecessors, (1179), 891 states have call successors, (1179) [2022-07-19 16:52:37,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4453 states to 4453 states and 7351 transitions. [2022-07-19 16:52:37,974 INFO L78 Accepts]: Start accepts. Automaton has 4453 states and 7351 transitions. Word has length 160 [2022-07-19 16:52:37,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:37,977 INFO L495 AbstractCegarLoop]: Abstraction has 4453 states and 7351 transitions. [2022-07-19 16:52:37,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-19 16:52:37,977 INFO L276 IsEmpty]: Start isEmpty. Operand 4453 states and 7351 transitions. [2022-07-19 16:52:37,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-19 16:52:37,980 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:37,980 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:37,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-07-19 16:52:38,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-07-19 16:52:38,184 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:38,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:38,184 INFO L85 PathProgramCache]: Analyzing trace with hash -409552112, now seen corresponding path program 1 times [2022-07-19 16:52:38,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:38,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827322201] [2022-07-19 16:52:38,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:38,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:52:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:52:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:52:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:52:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 16:52:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:52:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 16:52:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 16:52:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 16:52:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,611 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 16:52:38,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:38,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827322201] [2022-07-19 16:52:38,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827322201] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:52:38,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150329086] [2022-07-19 16:52:38,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:38,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:52:38,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:52:38,616 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:52:38,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-19 16:52:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:38,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 1568 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 16:52:38,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:52:38,954 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-19 16:52:38,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:52:38,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150329086] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:38,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:52:38,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-07-19 16:52:38,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652361258] [2022-07-19 16:52:38,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:38,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:52:38,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:38,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:52:38,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:52:38,956 INFO L87 Difference]: Start difference. First operand 4453 states and 7351 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-19 16:52:42,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:42,549 INFO L93 Difference]: Finished difference Result 14588 states and 24770 transitions. [2022-07-19 16:52:42,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:52:42,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 161 [2022-07-19 16:52:42,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:42,583 INFO L225 Difference]: With dead ends: 14588 [2022-07-19 16:52:42,583 INFO L226 Difference]: Without dead ends: 10207 [2022-07-19 16:52:42,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 196 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:52:42,598 INFO L413 NwaCegarLoop]: 848 mSDtfsCounter, 1819 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1891 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:42,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1891 Valid, 1356 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 16:52:42,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10207 states. [2022-07-19 16:52:45,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10207 to 9728. [2022-07-19 16:52:45,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9728 states, 7090 states have (on average 1.5870239774330042) internal successors, (11252), 7561 states have internal predecessors, (11252), 2126 states have call successors, (2126), 321 states have call predecessors, (2126), 511 states have return successors, (3065), 2133 states have call predecessors, (3065), 2121 states have call successors, (3065) [2022-07-19 16:52:45,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9728 states to 9728 states and 16443 transitions. [2022-07-19 16:52:45,398 INFO L78 Accepts]: Start accepts. Automaton has 9728 states and 16443 transitions. Word has length 161 [2022-07-19 16:52:45,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:45,398 INFO L495 AbstractCegarLoop]: Abstraction has 9728 states and 16443 transitions. [2022-07-19 16:52:45,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-19 16:52:45,398 INFO L276 IsEmpty]: Start isEmpty. Operand 9728 states and 16443 transitions. [2022-07-19 16:52:45,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-19 16:52:45,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:45,401 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:45,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-19 16:52:45,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-07-19 16:52:45,602 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:45,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:45,602 INFO L85 PathProgramCache]: Analyzing trace with hash 188655577, now seen corresponding path program 1 times [2022-07-19 16:52:45,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:45,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796414640] [2022-07-19 16:52:45,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:45,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:52:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:52:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:52:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:52:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 16:52:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:52:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 16:52:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 16:52:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 16:52:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,976 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 16:52:45,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:45,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796414640] [2022-07-19 16:52:45,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796414640] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:52:45,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918183708] [2022-07-19 16:52:45,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:45,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:52:45,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:52:45,978 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:52:45,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-19 16:52:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:46,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 1570 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 16:52:46,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:52:46,296 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-19 16:52:46,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:52:46,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918183708] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:46,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:52:46,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-07-19 16:52:46,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184501462] [2022-07-19 16:52:46,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:46,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:52:46,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:46,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:52:46,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:52:46,298 INFO L87 Difference]: Start difference. First operand 9728 states and 16443 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-19 16:52:54,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:54,205 INFO L93 Difference]: Finished difference Result 32587 states and 57371 transitions. [2022-07-19 16:52:54,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:52:54,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 162 [2022-07-19 16:52:54,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:54,314 INFO L225 Difference]: With dead ends: 32587 [2022-07-19 16:52:54,314 INFO L226 Difference]: Without dead ends: 22931 [2022-07-19 16:52:54,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 197 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:52:54,355 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 1807 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1878 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:54,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1878 Valid, 1354 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 16:52:54,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22931 states. [2022-07-19 16:53:01,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22931 to 21939. [2022-07-19 16:53:01,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21939 states, 15625 states have (on average 1.57888) internal successors, (24670), 16760 states have internal predecessors, (24670), 5218 states have call successors, (5218), 637 states have call predecessors, (5218), 1095 states have return successors, (8433), 5273 states have call predecessors, (8433), 5213 states have call successors, (8433) [2022-07-19 16:53:01,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21939 states to 21939 states and 38321 transitions. [2022-07-19 16:53:01,496 INFO L78 Accepts]: Start accepts. Automaton has 21939 states and 38321 transitions. Word has length 162 [2022-07-19 16:53:01,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:01,497 INFO L495 AbstractCegarLoop]: Abstraction has 21939 states and 38321 transitions. [2022-07-19 16:53:01,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-19 16:53:01,497 INFO L276 IsEmpty]: Start isEmpty. Operand 21939 states and 38321 transitions. [2022-07-19 16:53:01,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-19 16:53:01,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:01,501 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:53:01,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-07-19 16:53:01,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-07-19 16:53:01,702 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:01,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:01,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1553228658, now seen corresponding path program 1 times [2022-07-19 16:53:01,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:01,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475396876] [2022-07-19 16:53:01,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:01,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:01,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:01,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:01,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:01,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:53:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:02,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:02,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:02,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:02,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:53:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:02,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:02,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:53:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:02,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:02,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:02,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:53:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:02,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 16:53:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:02,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:53:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:02,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 16:53:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:02,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 16:53:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:02,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 16:53:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:02,124 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 16:53:02,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:02,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475396876] [2022-07-19 16:53:02,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475396876] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:53:02,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078644323] [2022-07-19 16:53:02,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:02,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:53:02,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:53:02,128 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:53:02,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-19 16:53:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:02,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 1572 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 16:53:02,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:53:02,463 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-19 16:53:02,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:53:02,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078644323] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:53:02,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:53:02,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-07-19 16:53:02,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505572878] [2022-07-19 16:53:02,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:53:02,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:53:02,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:02,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:53:02,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:53:02,465 INFO L87 Difference]: Start difference. First operand 21939 states and 38321 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-19 16:53:21,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:53:21,741 INFO L93 Difference]: Finished difference Result 74822 states and 139172 transitions. [2022-07-19 16:53:21,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:53:21,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 163 [2022-07-19 16:53:21,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:53:21,996 INFO L225 Difference]: With dead ends: 74822 [2022-07-19 16:53:21,997 INFO L226 Difference]: Without dead ends: 52955 [2022-07-19 16:53:22,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 198 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:53:22,079 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 1795 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1865 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:53:22,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1865 Valid, 1352 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 16:53:22,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52955 states. [2022-07-19 16:53:39,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52955 to 51046. [2022-07-19 16:53:39,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51046 states, 35500 states have (on average 1.5687887323943661) internal successors, (55692), 38279 states have internal predecessors, (55692), 13170 states have call successors, (13170), 1269 states have call predecessors, (13170), 2375 states have return successors, (24453), 13393 states have call predecessors, (24453), 13165 states have call successors, (24453) [2022-07-19 16:53:40,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51046 states to 51046 states and 93315 transitions. [2022-07-19 16:53:40,140 INFO L78 Accepts]: Start accepts. Automaton has 51046 states and 93315 transitions. Word has length 163 [2022-07-19 16:53:40,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:40,141 INFO L495 AbstractCegarLoop]: Abstraction has 51046 states and 93315 transitions. [2022-07-19 16:53:40,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-19 16:53:40,141 INFO L276 IsEmpty]: Start isEmpty. Operand 51046 states and 93315 transitions. [2022-07-19 16:53:40,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-19 16:53:40,149 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:40,150 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:53:40,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-19 16:53:40,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-07-19 16:53:40,364 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:40,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:40,364 INFO L85 PathProgramCache]: Analyzing trace with hash 905325115, now seen corresponding path program 1 times [2022-07-19 16:53:40,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:40,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590655345] [2022-07-19 16:53:40,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:40,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:53:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:53:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:53:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:53:40,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 16:53:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:53:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 16:53:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 16:53:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 16:53:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 16:53:40,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:40,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590655345] [2022-07-19 16:53:40,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590655345] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:53:40,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174691589] [2022-07-19 16:53:40,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:40,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:53:40,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:53:40,834 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:53:40,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-19 16:53:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:41,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 1574 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 16:53:41,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:53:41,163 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-19 16:53:41,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:53:41,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174691589] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:53:41,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:53:41,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-07-19 16:53:41,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812212378] [2022-07-19 16:53:41,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:53:41,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:53:41,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:41,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:53:41,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:53:41,165 INFO L87 Difference]: Start difference. First operand 51046 states and 93315 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17)