./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec9_product26.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec9_product26.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 d5d3c0f581b3d52ccfb3e43d6fb6458a66cd40c307750c0d7336040b60b78e76 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:15:38,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:15:38,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:15:38,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:15:38,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:15:38,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:15:38,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:15:38,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:15:38,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:15:38,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:15:38,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:15:38,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:15:38,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:15:38,644 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:15:38,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:15:38,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:15:38,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:15:38,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:15:38,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:15:38,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:15:38,656 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:15:38,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:15:38,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:15:38,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:15:38,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:15:38,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:15:38,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:15:38,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:15:38,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:15:38,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:15:38,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:15:38,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:15:38,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:15:38,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:15:38,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:15:38,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:15:38,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:15:38,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:15:38,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:15:38,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:15:38,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:15:38,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:15:38,673 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:15:38,699 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:15:38,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:15:38,699 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:15:38,699 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:15:38,700 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:15:38,700 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:15:38,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:15:38,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:15:38,701 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:15:38,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:15:38,701 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:15:38,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:15:38,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:15:38,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:15:38,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:15:38,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:15:38,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:15:38,702 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:15:38,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:15:38,703 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:15:38,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:15:38,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:15:38,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:15:38,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:15:38,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:15:38,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:15:38,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:15:38,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:15:38,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:15:38,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:15:38,704 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:15:38,704 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:15:38,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:15:38,705 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5d3c0f581b3d52ccfb3e43d6fb6458a66cd40c307750c0d7336040b60b78e76 [2022-07-22 17:15:38,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:15:38,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:15:38,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:15:38,884 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:15:38,885 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:15:38,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec9_product26.cil.c [2022-07-22 17:15:38,922 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff64aed1f/ad91c1c1d6904bbda5786d43bb54c166/FLAG5a59c9554 [2022-07-22 17:15:39,374 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:15:39,375 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec9_product26.cil.c [2022-07-22 17:15:39,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff64aed1f/ad91c1c1d6904bbda5786d43bb54c166/FLAG5a59c9554 [2022-07-22 17:15:39,397 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff64aed1f/ad91c1c1d6904bbda5786d43bb54c166 [2022-07-22 17:15:39,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:15:39,403 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:15:39,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:15:39,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:15:39,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:15:39,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:15:39" (1/1) ... [2022-07-22 17:15:39,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14219806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:15:39, skipping insertion in model container [2022-07-22 17:15:39,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:15:39" (1/1) ... [2022-07-22 17:15:39,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:15:39,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:15:39,790 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_spec9_product26.cil.c[46529,46542] [2022-07-22 17:15:39,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:15:39,853 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:15:39,926 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_spec9_product26.cil.c[46529,46542] [2022-07-22 17:15:39,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:15:39,984 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:15:39,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:15:39 WrapperNode [2022-07-22 17:15:39,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:15:39,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:15:39,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:15:39,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:15:39,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:15:39" (1/1) ... [2022-07-22 17:15:40,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:15:39" (1/1) ... [2022-07-22 17:15:40,071 INFO L137 Inliner]: procedures = 93, calls = 337, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 814 [2022-07-22 17:15:40,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:15:40,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:15:40,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:15:40,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:15:40,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:15:39" (1/1) ... [2022-07-22 17:15:40,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:15:39" (1/1) ... [2022-07-22 17:15:40,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:15:39" (1/1) ... [2022-07-22 17:15:40,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:15:39" (1/1) ... [2022-07-22 17:15:40,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:15:39" (1/1) ... [2022-07-22 17:15:40,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:15:39" (1/1) ... [2022-07-22 17:15:40,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:15:39" (1/1) ... [2022-07-22 17:15:40,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:15:40,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:15:40,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:15:40,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:15:40,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:15:39" (1/1) ... [2022-07-22 17:15:40,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:15:40,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:15:40,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 17:15:40,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 17:15:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:15:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-22 17:15:40,302 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-22 17:15:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-22 17:15:40,302 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-22 17:15:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-22 17:15:40,303 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-22 17:15:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-22 17:15:40,303 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-22 17:15:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-22 17:15:40,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-22 17:15:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-22 17:15:40,304 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-22 17:15:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-22 17:15:40,304 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-22 17:15:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-22 17:15:40,304 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-22 17:15:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-22 17:15:40,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-22 17:15:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-22 17:15:40,305 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-22 17:15:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-22 17:15:40,305 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-22 17:15:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-22 17:15:40,305 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-22 17:15:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-22 17:15:40,305 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-22 17:15:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-22 17:15:40,306 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-22 17:15:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2022-07-22 17:15:40,306 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2022-07-22 17:15:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-22 17:15:40,306 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-22 17:15:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-22 17:15:40,306 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-22 17:15:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-22 17:15:40,307 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-22 17:15:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2022-07-22 17:15:40,315 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2022-07-22 17:15:40,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:15:40,316 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-22 17:15:40,316 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-22 17:15:40,316 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-22 17:15:40,316 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-22 17:15:40,316 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-22 17:15:40,316 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-22 17:15:40,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:15:40,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:15:40,317 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-22 17:15:40,317 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-22 17:15:40,472 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:15:40,473 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:15:41,168 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:15:41,182 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:15:41,183 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 17:15:41,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:15:41 BoogieIcfgContainer [2022-07-22 17:15:41,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:15:41,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:15:41,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:15:41,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:15:41,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:15:39" (1/3) ... [2022-07-22 17:15:41,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38931c38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:15:41, skipping insertion in model container [2022-07-22 17:15:41,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:15:39" (2/3) ... [2022-07-22 17:15:41,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38931c38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:15:41, skipping insertion in model container [2022-07-22 17:15:41,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:15:41" (3/3) ... [2022-07-22 17:15:41,193 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product26.cil.c [2022-07-22 17:15:41,205 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:15:41,205 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:15:41,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:15:41,269 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@452b184b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@cc06aed [2022-07-22 17:15:41,269 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:15:41,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 545 states, 431 states have (on average 1.7076566125290022) internal successors, (736), 454 states have internal predecessors, (736), 89 states have call successors, (89), 23 states have call predecessors, (89), 23 states have return successors, (89), 82 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-22 17:15:41,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-22 17:15:41,295 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:15:41,296 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:15:41,297 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:15:41,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:15:41,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1868940779, now seen corresponding path program 1 times [2022-07-22 17:15:41,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:15:41,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667605817] [2022-07-22 17:15:41,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:15:41,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:15:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:41,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:15:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:41,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:41,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:15:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:41,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 17:15:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:41,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:41,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:41,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:41,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 17:15:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:41,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:15:41,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:15:41,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667605817] [2022-07-22 17:15:41,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667605817] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:15:41,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:15:41,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:15:41,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409660630] [2022-07-22 17:15:41,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:15:41,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:15:41,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:15:41,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:15:41,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:15:41,869 INFO L87 Difference]: Start difference. First operand has 545 states, 431 states have (on average 1.7076566125290022) internal successors, (736), 454 states have internal predecessors, (736), 89 states have call successors, (89), 23 states have call predecessors, (89), 23 states have return successors, (89), 82 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:15:45,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:15:45,339 INFO L93 Difference]: Finished difference Result 1223 states and 2080 transitions. [2022-07-22 17:15:45,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:15:45,342 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2022-07-22 17:15:45,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:15:45,355 INFO L225 Difference]: With dead ends: 1223 [2022-07-22 17:15:45,356 INFO L226 Difference]: Without dead ends: 690 [2022-07-22 17:15:45,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:15:45,364 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 666 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 2272 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 2401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:15:45,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 1670 Invalid, 2401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2272 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-22 17:15:45,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-07-22 17:15:45,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2022-07-22 17:15:45,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.703529411764706) internal successors, (724), 446 states have internal predecessors, (724), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-22 17:15:45,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 897 transitions. [2022-07-22 17:15:45,502 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 897 transitions. Word has length 58 [2022-07-22 17:15:45,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:15:45,503 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 897 transitions. [2022-07-22 17:15:45,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:15:45,503 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 897 transitions. [2022-07-22 17:15:45,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-22 17:15:45,506 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:15:45,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:15:45,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 17:15:45,507 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:15:45,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:15:45,507 INFO L85 PathProgramCache]: Analyzing trace with hash 49721393, now seen corresponding path program 1 times [2022-07-22 17:15:45,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:15:45,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790381172] [2022-07-22 17:15:45,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:15:45,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:15:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:45,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:15:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:45,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:45,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:15:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:45,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 17:15:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:45,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:45,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:45,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 17:15:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:45,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:15:45,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:15:45,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790381172] [2022-07-22 17:15:45,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790381172] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:15:45,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:15:45,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:15:45,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561484707] [2022-07-22 17:15:45,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:15:45,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:15:45,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:15:45,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:15:45,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:15:45,757 INFO L87 Difference]: Start difference. First operand 537 states and 897 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:15:49,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:15:49,119 INFO L93 Difference]: Finished difference Result 1209 states and 2046 transitions. [2022-07-22 17:15:49,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:15:49,119 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 61 [2022-07-22 17:15:49,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:15:49,125 INFO L225 Difference]: With dead ends: 1209 [2022-07-22 17:15:49,125 INFO L226 Difference]: Without dead ends: 690 [2022-07-22 17:15:49,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:15:49,127 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 663 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 2397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:15:49,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 1634 Invalid, 2397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-22 17:15:49,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-07-22 17:15:49,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2022-07-22 17:15:49,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.7011764705882353) internal successors, (723), 446 states have internal predecessors, (723), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-22 17:15:49,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 896 transitions. [2022-07-22 17:15:49,161 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 896 transitions. Word has length 61 [2022-07-22 17:15:49,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:15:49,161 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 896 transitions. [2022-07-22 17:15:49,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:15:49,161 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 896 transitions. [2022-07-22 17:15:49,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-22 17:15:49,163 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:15:49,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:15:49,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 17:15:49,163 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:15:49,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:15:49,164 INFO L85 PathProgramCache]: Analyzing trace with hash -343579, now seen corresponding path program 1 times [2022-07-22 17:15:49,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:15:49,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98696931] [2022-07-22 17:15:49,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:15:49,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:15:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:49,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:15:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:49,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:49,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:15:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:49,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 17:15:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:49,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:49,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:49,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 17:15:49,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:49,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:15:49,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:15:49,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98696931] [2022-07-22 17:15:49,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98696931] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:15:49,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:15:49,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:15:49,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666921056] [2022-07-22 17:15:49,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:15:49,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:15:49,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:15:49,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:15:49,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:15:49,433 INFO L87 Difference]: Start difference. First operand 537 states and 896 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:15:52,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:15:52,678 INFO L93 Difference]: Finished difference Result 1209 states and 2045 transitions. [2022-07-22 17:15:52,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:15:52,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2022-07-22 17:15:52,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:15:52,682 INFO L225 Difference]: With dead ends: 1209 [2022-07-22 17:15:52,683 INFO L226 Difference]: Without dead ends: 690 [2022-07-22 17:15:52,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:15:52,685 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 660 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 2395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:15:52,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 1631 Invalid, 2395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 17:15:52,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-07-22 17:15:52,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2022-07-22 17:15:52,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.6988235294117646) internal successors, (722), 446 states have internal predecessors, (722), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-22 17:15:52,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 895 transitions. [2022-07-22 17:15:52,718 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 895 transitions. Word has length 62 [2022-07-22 17:15:52,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:15:52,718 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 895 transitions. [2022-07-22 17:15:52,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:15:52,718 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 895 transitions. [2022-07-22 17:15:52,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-22 17:15:52,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:15:52,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:15:52,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 17:15:52,720 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:15:52,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:15:52,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1969000915, now seen corresponding path program 1 times [2022-07-22 17:15:52,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:15:52,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463772372] [2022-07-22 17:15:52,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:15:52,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:15:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:52,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:15:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:52,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:52,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:52,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 17:15:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:52,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:15:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:52,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:53,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:53,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 17:15:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:53,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:15:53,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:15:53,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463772372] [2022-07-22 17:15:53,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463772372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:15:53,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:15:53,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:15:53,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582591639] [2022-07-22 17:15:53,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:15:53,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:15:53,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:15:53,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:15:53,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:15:53,033 INFO L87 Difference]: Start difference. First operand 537 states and 895 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:15:56,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:15:56,207 INFO L93 Difference]: Finished difference Result 1209 states and 2044 transitions. [2022-07-22 17:15:56,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:15:56,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-07-22 17:15:56,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:15:56,212 INFO L225 Difference]: With dead ends: 1209 [2022-07-22 17:15:56,212 INFO L226 Difference]: Without dead ends: 690 [2022-07-22 17:15:56,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:15:56,224 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 1095 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 2348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:15:56,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1170 Valid, 1616 Invalid, 2348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 2084 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-22 17:15:56,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-07-22 17:15:56,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2022-07-22 17:15:56,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.6964705882352942) internal successors, (721), 446 states have internal predecessors, (721), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-22 17:15:56,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 894 transitions. [2022-07-22 17:15:56,303 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 894 transitions. Word has length 63 [2022-07-22 17:15:56,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:15:56,304 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 894 transitions. [2022-07-22 17:15:56,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:15:56,305 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 894 transitions. [2022-07-22 17:15:56,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-22 17:15:56,307 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:15:56,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:15:56,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 17:15:56,308 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:15:56,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:15:56,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1010487905, now seen corresponding path program 1 times [2022-07-22 17:15:56,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:15:56,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831122084] [2022-07-22 17:15:56,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:15:56,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:15:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:56,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:15:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:56,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:56,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 17:15:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:56,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 17:15:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:56,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:56,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:56,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 17:15:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:56,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:15:56,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:15:56,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831122084] [2022-07-22 17:15:56,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831122084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:15:56,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:15:56,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:15:56,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084998558] [2022-07-22 17:15:56,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:15:56,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:15:56,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:15:56,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:15:56,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:15:56,630 INFO L87 Difference]: Start difference. First operand 537 states and 894 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:15:59,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:15:59,122 INFO L93 Difference]: Finished difference Result 1209 states and 2043 transitions. [2022-07-22 17:15:59,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:15:59,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2022-07-22 17:15:59,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:15:59,126 INFO L225 Difference]: With dead ends: 1209 [2022-07-22 17:15:59,126 INFO L226 Difference]: Without dead ends: 690 [2022-07-22 17:15:59,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:15:59,128 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 654 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 2260 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 2393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:15:59,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 1614 Invalid, 2393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2260 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 17:15:59,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-07-22 17:15:59,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2022-07-22 17:15:59,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.6941176470588235) internal successors, (720), 446 states have internal predecessors, (720), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-22 17:15:59,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 893 transitions. [2022-07-22 17:15:59,157 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 893 transitions. Word has length 64 [2022-07-22 17:15:59,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:15:59,157 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 893 transitions. [2022-07-22 17:15:59,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:15:59,158 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 893 transitions. [2022-07-22 17:15:59,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 17:15:59,159 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:15:59,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:15:59,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 17:15:59,159 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:15:59,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:15:59,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1531282391, now seen corresponding path program 1 times [2022-07-22 17:15:59,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:15:59,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052942136] [2022-07-22 17:15:59,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:15:59,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:15:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:59,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:15:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:59,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:59,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:15:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:59,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:15:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:59,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:59,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:15:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:59,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 17:15:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:15:59,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:15:59,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:15:59,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052942136] [2022-07-22 17:15:59,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052942136] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:15:59,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:15:59,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:15:59,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632195675] [2022-07-22 17:15:59,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:15:59,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:15:59,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:15:59,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:15:59,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:15:59,399 INFO L87 Difference]: Start difference. First operand 537 states and 893 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:16:02,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:16:02,122 INFO L93 Difference]: Finished difference Result 1169 states and 1967 transitions. [2022-07-22 17:16:02,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:16:02,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-22 17:16:02,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:16:02,126 INFO L225 Difference]: With dead ends: 1169 [2022-07-22 17:16:02,126 INFO L226 Difference]: Without dead ends: 690 [2022-07-22 17:16:02,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:16:02,128 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 720 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 2399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:16:02,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 1553 Invalid, 2399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 2233 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 17:16:02,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-07-22 17:16:02,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2022-07-22 17:16:02,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.6823529411764706) internal successors, (715), 446 states have internal predecessors, (715), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-22 17:16:02,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 888 transitions. [2022-07-22 17:16:02,158 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 888 transitions. Word has length 65 [2022-07-22 17:16:02,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:16:02,159 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 888 transitions. [2022-07-22 17:16:02,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:16:02,159 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 888 transitions. [2022-07-22 17:16:02,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 17:16:02,160 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:16:02,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:16:02,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 17:16:02,161 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:16:02,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:16:02,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1625150366, now seen corresponding path program 1 times [2022-07-22 17:16:02,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:16:02,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935502289] [2022-07-22 17:16:02,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:16:02,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:16:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:02,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:16:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:02,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:02,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:16:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:02,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:16:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:02,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:02,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:02,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 17:16:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:02,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:16:02,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:16:02,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935502289] [2022-07-22 17:16:02,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935502289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:16:02,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:16:02,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:16:02,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840980465] [2022-07-22 17:16:02,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:16:02,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:16:02,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:16:02,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:16:02,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:16:02,412 INFO L87 Difference]: Start difference. First operand 537 states and 888 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:16:04,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:16:04,955 INFO L93 Difference]: Finished difference Result 1169 states and 1962 transitions. [2022-07-22 17:16:04,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:16:04,956 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-22 17:16:04,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:16:04,959 INFO L225 Difference]: With dead ends: 1169 [2022-07-22 17:16:04,959 INFO L226 Difference]: Without dead ends: 690 [2022-07-22 17:16:04,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:16:04,961 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 719 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 2213 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 2374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:16:04,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1558 Invalid, 2374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 2213 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 17:16:04,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-07-22 17:16:04,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2022-07-22 17:16:04,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.6705882352941177) internal successors, (710), 446 states have internal predecessors, (710), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-22 17:16:04,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 883 transitions. [2022-07-22 17:16:04,992 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 883 transitions. Word has length 66 [2022-07-22 17:16:04,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:16:04,993 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 883 transitions. [2022-07-22 17:16:04,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:16:04,993 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 883 transitions. [2022-07-22 17:16:04,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 17:16:04,994 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:16:04,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:16:04,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 17:16:04,994 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:16:04,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:16:04,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1328457138, now seen corresponding path program 1 times [2022-07-22 17:16:04,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:16:04,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643555585] [2022-07-22 17:16:04,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:16:04,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:16:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:05,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:16:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:05,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:05,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:16:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:05,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:16:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:05,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:05,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:05,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 17:16:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:05,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:16:05,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:16:05,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643555585] [2022-07-22 17:16:05,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643555585] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:16:05,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:16:05,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:16:05,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865921986] [2022-07-22 17:16:05,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:16:05,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:16:05,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:16:05,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:16:05,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:16:05,200 INFO L87 Difference]: Start difference. First operand 537 states and 883 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:16:07,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:16:07,932 INFO L93 Difference]: Finished difference Result 1169 states and 1957 transitions. [2022-07-22 17:16:07,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:16:07,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-07-22 17:16:07,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:16:07,936 INFO L225 Difference]: With dead ends: 1169 [2022-07-22 17:16:07,936 INFO L226 Difference]: Without dead ends: 690 [2022-07-22 17:16:07,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:16:07,938 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 1164 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 2028 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 2314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 2028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:16:07,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 1535 Invalid, 2314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 2028 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 17:16:07,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-07-22 17:16:07,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2022-07-22 17:16:07,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.6588235294117648) internal successors, (705), 446 states have internal predecessors, (705), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-22 17:16:07,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 878 transitions. [2022-07-22 17:16:07,970 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 878 transitions. Word has length 67 [2022-07-22 17:16:07,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:16:07,971 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 878 transitions. [2022-07-22 17:16:07,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:16:07,971 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 878 transitions. [2022-07-22 17:16:07,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 17:16:07,972 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:16:07,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:16:07,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 17:16:07,972 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:16:07,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:16:07,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1284448200, now seen corresponding path program 1 times [2022-07-22 17:16:07,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:16:07,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463813351] [2022-07-22 17:16:07,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:16:07,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:16:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:08,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:16:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:08,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:08,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:08,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:16:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:08,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:16:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:08,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:08,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:08,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 17:16:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:08,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:16:08,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:16:08,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463813351] [2022-07-22 17:16:08,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463813351] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:16:08,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:16:08,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:16:08,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130257284] [2022-07-22 17:16:08,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:16:08,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:16:08,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:16:08,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:16:08,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:16:08,192 INFO L87 Difference]: Start difference. First operand 537 states and 878 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:16:10,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:16:10,998 INFO L93 Difference]: Finished difference Result 1184 states and 1972 transitions. [2022-07-22 17:16:10,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:16:10,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-07-22 17:16:11,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:16:11,016 INFO L225 Difference]: With dead ends: 1184 [2022-07-22 17:16:11,024 INFO L226 Difference]: Without dead ends: 711 [2022-07-22 17:16:11,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:16:11,026 INFO L413 NwaCegarLoop]: 789 mSDtfsCounter, 1172 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 2023 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 2296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 2023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:16:11,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 1560 Invalid, 2296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 2023 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 17:16:11,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2022-07-22 17:16:11,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 539. [2022-07-22 17:16:11,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 427 states have (on average 1.6557377049180328) internal successors, (707), 448 states have internal predecessors, (707), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-22 17:16:11,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 880 transitions. [2022-07-22 17:16:11,075 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 880 transitions. Word has length 68 [2022-07-22 17:16:11,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:16:11,076 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 880 transitions. [2022-07-22 17:16:11,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:16:11,076 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 880 transitions. [2022-07-22 17:16:11,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 17:16:11,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:16:11,077 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:16:11,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 17:16:11,078 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:16:11,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:16:11,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1809268505, now seen corresponding path program 1 times [2022-07-22 17:16:11,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:16:11,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231110574] [2022-07-22 17:16:11,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:16:11,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:16:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:11,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:16:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:11,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:11,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:16:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:11,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:16:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:11,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:11,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:11,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 17:16:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:11,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:16:11,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:16:11,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231110574] [2022-07-22 17:16:11,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231110574] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:16:11,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:16:11,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:16:11,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439920687] [2022-07-22 17:16:11,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:16:11,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:16:11,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:16:11,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:16:11,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:16:11,310 INFO L87 Difference]: Start difference. First operand 539 states and 880 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:16:14,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:16:14,497 INFO L93 Difference]: Finished difference Result 1175 states and 1958 transitions. [2022-07-22 17:16:14,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:16:14,498 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-07-22 17:16:14,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:16:14,501 INFO L225 Difference]: With dead ends: 1175 [2022-07-22 17:16:14,501 INFO L226 Difference]: Without dead ends: 694 [2022-07-22 17:16:14,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:16:14,503 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 727 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 2323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:16:14,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 1554 Invalid, 2323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 2173 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 17:16:14,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-07-22 17:16:14,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 539. [2022-07-22 17:16:14,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 427 states have (on average 1.6440281030444965) internal successors, (702), 448 states have internal predecessors, (702), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-22 17:16:14,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 875 transitions. [2022-07-22 17:16:14,578 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 875 transitions. Word has length 68 [2022-07-22 17:16:14,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:16:14,578 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 875 transitions. [2022-07-22 17:16:14,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:16:14,578 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 875 transitions. [2022-07-22 17:16:14,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 17:16:14,579 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:16:14,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:16:14,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 17:16:14,580 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:16:14,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:16:14,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1924060336, now seen corresponding path program 1 times [2022-07-22 17:16:14,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:16:14,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323988033] [2022-07-22 17:16:14,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:16:14,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:16:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:14,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:16:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:14,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:14,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:16:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:14,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:16:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:14,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:14,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:14,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 17:16:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:14,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:16:14,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:16:14,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323988033] [2022-07-22 17:16:14,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323988033] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:16:14,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:16:14,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:16:14,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387457401] [2022-07-22 17:16:14,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:16:14,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:16:14,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:16:14,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:16:14,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:16:14,859 INFO L87 Difference]: Start difference. First operand 539 states and 875 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:16:18,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:16:18,077 INFO L93 Difference]: Finished difference Result 1188 states and 1969 transitions. [2022-07-22 17:16:18,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:16:18,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-07-22 17:16:18,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:16:18,080 INFO L225 Difference]: With dead ends: 1188 [2022-07-22 17:16:18,080 INFO L226 Difference]: Without dead ends: 715 [2022-07-22 17:16:18,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:16:18,082 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 729 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 2160 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 2300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 2160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:16:18,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 1559 Invalid, 2300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 2160 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-22 17:16:18,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-07-22 17:16:18,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 542. [2022-07-22 17:16:18,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 430 states have (on average 1.6395348837209303) internal successors, (705), 451 states have internal predecessors, (705), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-22 17:16:18,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 878 transitions. [2022-07-22 17:16:18,144 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 878 transitions. Word has length 69 [2022-07-22 17:16:18,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:16:18,145 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 878 transitions. [2022-07-22 17:16:18,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:16:18,145 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 878 transitions. [2022-07-22 17:16:18,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 17:16:18,146 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:16:18,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:16:18,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 17:16:18,146 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:16:18,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:16:18,147 INFO L85 PathProgramCache]: Analyzing trace with hash -622918541, now seen corresponding path program 1 times [2022-07-22 17:16:18,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:16:18,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303568373] [2022-07-22 17:16:18,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:16:18,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:16:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:18,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:16:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:18,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:18,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:16:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:18,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:16:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:18,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:18,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:18,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 17:16:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:18,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:16:18,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:16:18,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303568373] [2022-07-22 17:16:18,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303568373] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:16:18,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:16:18,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:16:18,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36692061] [2022-07-22 17:16:18,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:16:18,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:16:18,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:16:18,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:16:18,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:16:18,390 INFO L87 Difference]: Start difference. First operand 542 states and 878 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:16:20,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:16:20,864 INFO L93 Difference]: Finished difference Result 1184 states and 1962 transitions. [2022-07-22 17:16:20,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:16:20,864 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-07-22 17:16:20,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:16:20,867 INFO L225 Difference]: With dead ends: 1184 [2022-07-22 17:16:20,867 INFO L226 Difference]: Without dead ends: 700 [2022-07-22 17:16:20,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:16:20,869 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 1160 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:16:20,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 1545 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 17:16:20,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-07-22 17:16:20,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 542. [2022-07-22 17:16:20,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 430 states have (on average 1.627906976744186) internal successors, (700), 451 states have internal predecessors, (700), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-22 17:16:20,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 873 transitions. [2022-07-22 17:16:20,902 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 873 transitions. Word has length 69 [2022-07-22 17:16:20,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:16:20,902 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 873 transitions. [2022-07-22 17:16:20,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:16:20,903 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 873 transitions. [2022-07-22 17:16:20,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-22 17:16:20,904 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:16:20,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:16:20,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 17:16:20,905 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:16:20,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:16:20,905 INFO L85 PathProgramCache]: Analyzing trace with hash -41250547, now seen corresponding path program 1 times [2022-07-22 17:16:20,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:16:20,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781976905] [2022-07-22 17:16:20,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:16:20,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:16:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:20,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:16:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:21,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:21,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:16:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:21,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 17:16:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:21,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:21,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:21,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 17:16:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:21,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:16:21,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:16:21,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781976905] [2022-07-22 17:16:21,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781976905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:16:21,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:16:21,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:16:21,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142175808] [2022-07-22 17:16:21,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:16:21,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:16:21,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:16:21,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:16:21,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:16:21,168 INFO L87 Difference]: Start difference. First operand 542 states and 873 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:16:24,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:16:24,175 INFO L93 Difference]: Finished difference Result 1194 states and 1968 transitions. [2022-07-22 17:16:24,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:16:24,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-07-22 17:16:24,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:16:24,179 INFO L225 Difference]: With dead ends: 1194 [2022-07-22 17:16:24,179 INFO L226 Difference]: Without dead ends: 721 [2022-07-22 17:16:24,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:16:24,181 INFO L413 NwaCegarLoop]: 781 mSDtfsCounter, 720 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1562 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:16:24,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 1562 Invalid, 2280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 2139 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 17:16:24,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2022-07-22 17:16:24,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 546. [2022-07-22 17:16:24,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 434 states have (on average 1.6221198156682028) internal successors, (704), 455 states have internal predecessors, (704), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-22 17:16:24,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 877 transitions. [2022-07-22 17:16:24,214 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 877 transitions. Word has length 70 [2022-07-22 17:16:24,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:16:24,214 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 877 transitions. [2022-07-22 17:16:24,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:16:24,215 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 877 transitions. [2022-07-22 17:16:24,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-22 17:16:24,215 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:16:24,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:16:24,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 17:16:24,216 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:16:24,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:16:24,216 INFO L85 PathProgramCache]: Analyzing trace with hash 705825132, now seen corresponding path program 1 times [2022-07-22 17:16:24,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:16:24,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013287597] [2022-07-22 17:16:24,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:16:24,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:16:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:24,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:16:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:24,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:24,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:16:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:24,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 17:16:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:24,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:24,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:24,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 17:16:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:24,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:16:24,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:16:24,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013287597] [2022-07-22 17:16:24,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013287597] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:16:24,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:16:24,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 17:16:24,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896572057] [2022-07-22 17:16:24,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:16:24,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 17:16:24,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:16:24,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 17:16:24,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:16:24,523 INFO L87 Difference]: Start difference. First operand 546 states and 877 transitions. Second operand has 12 states, 11 states have (on average 5.0) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 17:16:29,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:16:29,205 INFO L93 Difference]: Finished difference Result 1212 states and 2000 transitions. [2022-07-22 17:16:29,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 17:16:29,205 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2022-07-22 17:16:29,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:16:29,210 INFO L225 Difference]: With dead ends: 1212 [2022-07-22 17:16:29,210 INFO L226 Difference]: Without dead ends: 742 [2022-07-22 17:16:29,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2022-07-22 17:16:29,213 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 788 mSDsluCounter, 2591 mSDsCounter, 0 mSdLazyCounter, 6568 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 3393 SdHoareTripleChecker+Invalid, 6714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 6568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:16:29,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 3393 Invalid, 6714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 6568 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-22 17:16:29,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-07-22 17:16:29,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 561. [2022-07-22 17:16:29,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 445 states have (on average 1.6112359550561797) internal successors, (717), 468 states have internal predecessors, (717), 90 states have call successors, (90), 23 states have call predecessors, (90), 25 states have return successors, (89), 83 states have call predecessors, (89), 85 states have call successors, (89) [2022-07-22 17:16:29,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 896 transitions. [2022-07-22 17:16:29,253 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 896 transitions. Word has length 70 [2022-07-22 17:16:29,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:16:29,253 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 896 transitions. [2022-07-22 17:16:29,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 17:16:29,254 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 896 transitions. [2022-07-22 17:16:29,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-22 17:16:29,255 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:16:29,255 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:16:29,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 17:16:29,255 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:16:29,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:16:29,256 INFO L85 PathProgramCache]: Analyzing trace with hash 2083828554, now seen corresponding path program 1 times [2022-07-22 17:16:29,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:16:29,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254904957] [2022-07-22 17:16:29,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:16:29,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:16:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:29,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:16:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:29,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:29,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:16:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:29,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 17:16:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:29,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:29,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:29,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 17:16:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:29,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:16:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:29,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 17:16:29,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:16:29,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254904957] [2022-07-22 17:16:29,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254904957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:16:29,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:16:29,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:16:29,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122770161] [2022-07-22 17:16:29,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:16:29,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:16:29,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:16:29,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:16:29,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:16:29,487 INFO L87 Difference]: Start difference. First operand 561 states and 896 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 17:16:31,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:16:31,989 INFO L93 Difference]: Finished difference Result 1267 states and 2057 transitions. [2022-07-22 17:16:31,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:16:31,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2022-07-22 17:16:31,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:16:31,993 INFO L225 Difference]: With dead ends: 1267 [2022-07-22 17:16:31,993 INFO L226 Difference]: Without dead ends: 704 [2022-07-22 17:16:31,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:16:31,995 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 1080 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:16:31,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 1582 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 17:16:31,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-07-22 17:16:32,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 542. [2022-07-22 17:16:32,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.6200466200466201) internal successors, (695), 450 states have internal predecessors, (695), 89 states have call successors, (89), 23 states have call predecessors, (89), 23 states have return successors, (86), 82 states have call predecessors, (86), 84 states have call successors, (86) [2022-07-22 17:16:32,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 870 transitions. [2022-07-22 17:16:32,030 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 870 transitions. Word has length 76 [2022-07-22 17:16:32,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:16:32,030 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 870 transitions. [2022-07-22 17:16:32,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 17:16:32,030 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 870 transitions. [2022-07-22 17:16:32,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-22 17:16:32,032 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:16:32,032 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:16:32,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 17:16:32,032 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:16:32,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:16:32,032 INFO L85 PathProgramCache]: Analyzing trace with hash 715869938, now seen corresponding path program 1 times [2022-07-22 17:16:32,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:16:32,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327353991] [2022-07-22 17:16:32,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:16:32,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:16:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:32,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:16:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:32,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:32,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:16:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:32,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 17:16:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:32,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:32,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:32,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 17:16:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:32,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:16:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:32,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 17:16:32,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:16:32,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327353991] [2022-07-22 17:16:32,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327353991] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:16:32,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:16:32,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 17:16:32,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193682339] [2022-07-22 17:16:32,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:16:32,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 17:16:32,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:16:32,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 17:16:32,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:16:32,323 INFO L87 Difference]: Start difference. First operand 542 states and 870 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 17:16:38,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:16:38,910 INFO L93 Difference]: Finished difference Result 1504 states and 2483 transitions. [2022-07-22 17:16:38,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-22 17:16:38,911 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 77 [2022-07-22 17:16:38,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:16:38,917 INFO L225 Difference]: With dead ends: 1504 [2022-07-22 17:16:38,917 INFO L226 Difference]: Without dead ends: 1027 [2022-07-22 17:16:38,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2022-07-22 17:16:38,919 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 2267 mSDsluCounter, 2350 mSDsCounter, 0 mSdLazyCounter, 7709 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2330 SdHoareTripleChecker+Valid, 3219 SdHoareTripleChecker+Invalid, 8286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 7709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:16:38,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2330 Valid, 3219 Invalid, 8286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [577 Valid, 7709 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-22 17:16:38,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-07-22 17:16:38,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 765. [2022-07-22 17:16:38,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 611 states have (on average 1.6219312602291325) internal successors, (991), 632 states have internal predecessors, (991), 119 states have call successors, (119), 33 states have call predecessors, (119), 34 states have return successors, (122), 113 states have call predecessors, (122), 114 states have call successors, (122) [2022-07-22 17:16:38,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1232 transitions. [2022-07-22 17:16:38,981 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1232 transitions. Word has length 77 [2022-07-22 17:16:38,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:16:38,981 INFO L495 AbstractCegarLoop]: Abstraction has 765 states and 1232 transitions. [2022-07-22 17:16:38,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 17:16:38,981 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1232 transitions. [2022-07-22 17:16:38,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-22 17:16:38,982 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:16:38,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:16:38,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 17:16:38,983 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:16:38,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:16:38,983 INFO L85 PathProgramCache]: Analyzing trace with hash -240927220, now seen corresponding path program 1 times [2022-07-22 17:16:38,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:16:38,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248200432] [2022-07-22 17:16:38,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:16:38,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:16:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:39,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:16:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:39,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:39,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:16:39,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:39,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:16:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:39,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:39,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:39,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 17:16:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:39,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:16:39,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:16:39,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248200432] [2022-07-22 17:16:39,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248200432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:16:39,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:16:39,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:16:39,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683972282] [2022-07-22 17:16:39,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:16:39,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:16:39,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:16:39,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:16:39,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:16:39,228 INFO L87 Difference]: Start difference. First operand 765 states and 1232 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:16:42,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:16:42,460 INFO L93 Difference]: Finished difference Result 1668 states and 2736 transitions. [2022-07-22 17:16:42,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 17:16:42,460 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 77 [2022-07-22 17:16:42,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:16:42,464 INFO L225 Difference]: With dead ends: 1668 [2022-07-22 17:16:42,464 INFO L226 Difference]: Without dead ends: 952 [2022-07-22 17:16:42,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:16:42,467 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 693 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 2108 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 2243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 2108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:16:42,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1563 Invalid, 2243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 2108 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-22 17:16:42,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2022-07-22 17:16:42,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 765. [2022-07-22 17:16:42,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 611 states have (on average 1.6153846153846154) internal successors, (987), 632 states have internal predecessors, (987), 119 states have call successors, (119), 33 states have call predecessors, (119), 34 states have return successors, (122), 113 states have call predecessors, (122), 114 states have call successors, (122) [2022-07-22 17:16:42,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1228 transitions. [2022-07-22 17:16:42,530 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1228 transitions. Word has length 77 [2022-07-22 17:16:42,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:16:42,531 INFO L495 AbstractCegarLoop]: Abstraction has 765 states and 1228 transitions. [2022-07-22 17:16:42,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:16:42,531 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1228 transitions. [2022-07-22 17:16:42,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-22 17:16:42,532 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:16:42,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:16:42,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 17:16:42,533 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:16:42,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:16:42,533 INFO L85 PathProgramCache]: Analyzing trace with hash 112161162, now seen corresponding path program 1 times [2022-07-22 17:16:42,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:16:42,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059434799] [2022-07-22 17:16:42,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:16:42,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:16:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:42,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:16:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:42,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:42,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:16:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:42,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:16:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:42,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:42,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:42,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 17:16:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:42,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:16:42,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:16:42,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059434799] [2022-07-22 17:16:42,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059434799] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:16:42,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:16:42,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 17:16:42,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872673064] [2022-07-22 17:16:42,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:16:42,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 17:16:42,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:16:42,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 17:16:42,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:16:42,872 INFO L87 Difference]: Start difference. First operand 765 states and 1228 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 17:16:49,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:16:49,995 INFO L93 Difference]: Finished difference Result 2671 states and 4478 transitions. [2022-07-22 17:16:49,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 17:16:49,995 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 77 [2022-07-22 17:16:49,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:16:50,003 INFO L225 Difference]: With dead ends: 2671 [2022-07-22 17:16:50,003 INFO L226 Difference]: Without dead ends: 1985 [2022-07-22 17:16:50,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:16:50,006 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 2568 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 4411 mSolverCounterSat, 713 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2645 SdHoareTripleChecker+Valid, 2122 SdHoareTripleChecker+Invalid, 5124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 713 IncrementalHoareTripleChecker+Valid, 4411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:16:50,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2645 Valid, 2122 Invalid, 5124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [713 Valid, 4411 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-07-22 17:16:50,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2022-07-22 17:16:50,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1455. [2022-07-22 17:16:50,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1166 states have (on average 1.6423670668953687) internal successors, (1915), 1196 states have internal predecessors, (1915), 223 states have call successors, (223), 59 states have call predecessors, (223), 65 states have return successors, (243), 212 states have call predecessors, (243), 218 states have call successors, (243) [2022-07-22 17:16:50,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 2381 transitions. [2022-07-22 17:16:50,175 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 2381 transitions. Word has length 77 [2022-07-22 17:16:50,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:16:50,175 INFO L495 AbstractCegarLoop]: Abstraction has 1455 states and 2381 transitions. [2022-07-22 17:16:50,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 17:16:50,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 2381 transitions. [2022-07-22 17:16:50,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-22 17:16:50,179 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:16:50,179 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:16:50,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 17:16:50,180 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:16:50,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:16:50,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1484179961, now seen corresponding path program 1 times [2022-07-22 17:16:50,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:16:50,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017203000] [2022-07-22 17:16:50,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:16:50,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:16:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:50,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:16:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:50,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:50,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:16:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:50,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:16:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:50,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:50,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:50,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:16:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:50,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:50,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 17:16:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:50,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 17:16:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:50,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:16:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:50,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:16:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:50,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 17:16:50,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:16:50,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017203000] [2022-07-22 17:16:50,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017203000] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:16:50,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:16:50,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 17:16:50,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110165643] [2022-07-22 17:16:50,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:16:50,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 17:16:50,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:16:50,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 17:16:50,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:16:50,665 INFO L87 Difference]: Start difference. First operand 1455 states and 2381 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-22 17:16:55,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:16:55,753 INFO L93 Difference]: Finished difference Result 3658 states and 6195 transitions. [2022-07-22 17:16:55,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 17:16:55,754 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 107 [2022-07-22 17:16:55,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:16:55,763 INFO L225 Difference]: With dead ends: 3658 [2022-07-22 17:16:55,764 INFO L226 Difference]: Without dead ends: 2282 [2022-07-22 17:16:55,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=147, Invalid=273, Unknown=0, NotChecked=0, Total=420 [2022-07-22 17:16:55,768 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 2817 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 2911 mSolverCounterSat, 1369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2817 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 4280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1369 IncrementalHoareTripleChecker+Valid, 2911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:16:55,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2817 Valid, 2078 Invalid, 4280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1369 Valid, 2911 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-22 17:16:55,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2022-07-22 17:16:55,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 1463. [2022-07-22 17:16:55,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1463 states, 1172 states have (on average 1.6390784982935154) internal successors, (1921), 1202 states have internal predecessors, (1921), 223 states have call successors, (223), 59 states have call predecessors, (223), 67 states have return successors, (245), 212 states have call predecessors, (245), 218 states have call successors, (245) [2022-07-22 17:16:55,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 2389 transitions. [2022-07-22 17:16:55,927 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 2389 transitions. Word has length 107 [2022-07-22 17:16:55,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:16:55,927 INFO L495 AbstractCegarLoop]: Abstraction has 1463 states and 2389 transitions. [2022-07-22 17:16:55,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-22 17:16:55,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 2389 transitions. [2022-07-22 17:16:55,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-22 17:16:55,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:16:55,930 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:16:55,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 17:16:55,931 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:16:55,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:16:55,931 INFO L85 PathProgramCache]: Analyzing trace with hash 210734150, now seen corresponding path program 1 times [2022-07-22 17:16:55,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:16:55,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594268534] [2022-07-22 17:16:55,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:16:55,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:16:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:56,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:16:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:56,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:56,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:56,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:16:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:56,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:16:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:56,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:56,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:56,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:16:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:56,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:16:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:56,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:16:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:56,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:16:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:56,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 17:16:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:56,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 17:16:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:16:56,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 17:16:56,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:16:56,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594268534] [2022-07-22 17:16:56,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594268534] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:16:56,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:16:56,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:16:56,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111342351] [2022-07-22 17:16:56,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:16:56,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:16:56,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:16:56,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:16:56,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:16:56,323 INFO L87 Difference]: Start difference. First operand 1463 states and 2389 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:17:04,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:17:04,015 INFO L93 Difference]: Finished difference Result 5189 states and 8877 transitions. [2022-07-22 17:17:04,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-22 17:17:04,016 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 110 [2022-07-22 17:17:04,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:17:04,030 INFO L225 Difference]: With dead ends: 5189 [2022-07-22 17:17:04,031 INFO L226 Difference]: Without dead ends: 3805 [2022-07-22 17:17:04,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2022-07-22 17:17:04,036 INFO L413 NwaCegarLoop]: 899 mSDtfsCounter, 4108 mSDsluCounter, 2007 mSDsCounter, 0 mSdLazyCounter, 4749 mSolverCounterSat, 1427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4173 SdHoareTripleChecker+Valid, 2906 SdHoareTripleChecker+Invalid, 6176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1427 IncrementalHoareTripleChecker+Valid, 4749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:17:04,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4173 Valid, 2906 Invalid, 6176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1427 Valid, 4749 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-07-22 17:17:04,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3805 states. [2022-07-22 17:17:04,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3805 to 2916. [2022-07-22 17:17:04,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2345 states have (on average 1.6456289978678038) internal successors, (3859), 2393 states have internal predecessors, (3859), 428 states have call successors, (428), 109 states have call predecessors, (428), 142 states have return successors, (546), 435 states have call predecessors, (546), 423 states have call successors, (546) [2022-07-22 17:17:04,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4833 transitions. [2022-07-22 17:17:04,356 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4833 transitions. Word has length 110 [2022-07-22 17:17:04,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:17:04,357 INFO L495 AbstractCegarLoop]: Abstraction has 2916 states and 4833 transitions. [2022-07-22 17:17:04,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:17:04,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4833 transitions. [2022-07-22 17:17:04,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 17:17:04,360 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:17:04,360 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:17:04,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 17:17:04,360 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:17:04,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:17:04,361 INFO L85 PathProgramCache]: Analyzing trace with hash 207824670, now seen corresponding path program 1 times [2022-07-22 17:17:04,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:17:04,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966931945] [2022-07-22 17:17:04,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:17:04,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:17:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:04,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:17:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:04,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:17:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:04,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:17:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:04,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:17:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:04,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:17:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:04,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:17:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:04,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:17:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:04,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:17:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:04,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:17:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:04,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 17:17:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:04,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:17:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:04,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 17:17:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:04,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 17:17:04,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:17:04,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966931945] [2022-07-22 17:17:04,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966931945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:17:04,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:17:04,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 17:17:04,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518573981] [2022-07-22 17:17:04,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:17:04,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 17:17:04,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:17:04,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 17:17:04,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:17:04,807 INFO L87 Difference]: Start difference. First operand 2916 states and 4833 transitions. Second operand has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 7 states have internal predecessors, (87), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-22 17:17:23,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:17:23,928 INFO L93 Difference]: Finished difference Result 11305 states and 20157 transitions. [2022-07-22 17:17:23,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-07-22 17:17:23,928 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 7 states have internal predecessors, (87), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 114 [2022-07-22 17:17:23,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:17:23,997 INFO L225 Difference]: With dead ends: 11305 [2022-07-22 17:17:23,997 INFO L226 Difference]: Without dead ends: 8459 [2022-07-22 17:17:24,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=734, Invalid=2128, Unknown=0, NotChecked=0, Total=2862 [2022-07-22 17:17:24,014 INFO L413 NwaCegarLoop]: 1004 mSDtfsCounter, 8608 mSDsluCounter, 2720 mSDsCounter, 0 mSdLazyCounter, 9661 mSolverCounterSat, 3506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8687 SdHoareTripleChecker+Valid, 3724 SdHoareTripleChecker+Invalid, 13167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3506 IncrementalHoareTripleChecker+Valid, 9661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:17:24,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8687 Valid, 3724 Invalid, 13167 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3506 Valid, 9661 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2022-07-22 17:17:24,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8459 states. [2022-07-22 17:17:24,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8459 to 6574. [2022-07-22 17:17:24,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6574 states, 5263 states have (on average 1.6009880296408892) internal successors, (8426), 5384 states have internal predecessors, (8426), 959 states have call successors, (959), 283 states have call predecessors, (959), 351 states have return successors, (1402), 961 states have call predecessors, (1402), 954 states have call successors, (1402) [2022-07-22 17:17:24,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6574 states to 6574 states and 10787 transitions. [2022-07-22 17:17:24,901 INFO L78 Accepts]: Start accepts. Automaton has 6574 states and 10787 transitions. Word has length 114 [2022-07-22 17:17:24,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:17:24,902 INFO L495 AbstractCegarLoop]: Abstraction has 6574 states and 10787 transitions. [2022-07-22 17:17:24,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 7 states have internal predecessors, (87), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-22 17:17:24,902 INFO L276 IsEmpty]: Start isEmpty. Operand 6574 states and 10787 transitions. [2022-07-22 17:17:24,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-22 17:17:24,905 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:17:24,905 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:17:24,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 17:17:24,906 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:17:24,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:17:24,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2088298506, now seen corresponding path program 1 times [2022-07-22 17:17:24,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:17:24,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374065335] [2022-07-22 17:17:24,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:17:24,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:17:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:25,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:17:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:25,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:17:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:25,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:17:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:25,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:17:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:25,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:17:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:25,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:17:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:25,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:17:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:25,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:17:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:25,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:17:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:25,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:17:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:25,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:17:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:25,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 17:17:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:25,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 17:17:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:25,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 17:17:25,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:17:25,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374065335] [2022-07-22 17:17:25,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374065335] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:17:25,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323659640] [2022-07-22 17:17:25,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:17:25,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:17:25,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:17:25,504 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) [2022-07-22 17:17:25,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 17:17:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:25,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 1688 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 17:17:25,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:17:25,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:17:25,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:17:25,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323659640] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:17:25,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:17:25,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2022-07-22 17:17:25,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274627451] [2022-07-22 17:17:25,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:17:25,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:17:25,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:17:25,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:17:25,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-07-22 17:17:25,956 INFO L87 Difference]: Start difference. First operand 6574 states and 10787 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-22 17:17:28,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:17:28,961 INFO L93 Difference]: Finished difference Result 17990 states and 30397 transitions. [2022-07-22 17:17:28,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:17:28,962 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 122 [2022-07-22 17:17:28,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:17:29,012 INFO L225 Difference]: With dead ends: 17990 [2022-07-22 17:17:29,012 INFO L226 Difference]: Without dead ends: 11494 [2022-07-22 17:17:29,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-07-22 17:17:29,037 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 2188 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 2487 mSolverCounterSat, 501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 2988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 2487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:17:29,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2314 Valid, 2741 Invalid, 2988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 2487 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 17:17:29,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11494 states. [2022-07-22 17:17:30,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11494 to 10860. [2022-07-22 17:17:30,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10860 states, 8465 states have (on average 1.5912581216774955) internal successors, (13470), 8746 states have internal predecessors, (13470), 1826 states have call successors, (1826), 437 states have call predecessors, (1826), 568 states have return successors, (2810), 1871 states have call predecessors, (2810), 1821 states have call successors, (2810) [2022-07-22 17:17:30,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10860 states to 10860 states and 18106 transitions. [2022-07-22 17:17:30,635 INFO L78 Accepts]: Start accepts. Automaton has 10860 states and 18106 transitions. Word has length 122 [2022-07-22 17:17:30,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:17:30,636 INFO L495 AbstractCegarLoop]: Abstraction has 10860 states and 18106 transitions. [2022-07-22 17:17:30,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-22 17:17:30,636 INFO L276 IsEmpty]: Start isEmpty. Operand 10860 states and 18106 transitions. [2022-07-22 17:17:30,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-22 17:17:30,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:17:30,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:17:30,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 17:17:30,858 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,SelfDestructingSolverStorable21 [2022-07-22 17:17:30,859 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:17:30,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:17:30,859 INFO L85 PathProgramCache]: Analyzing trace with hash 514982175, now seen corresponding path program 1 times [2022-07-22 17:17:30,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:17:30,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808512210] [2022-07-22 17:17:30,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:17:30,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:17:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:30,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:17:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:30,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:17:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:30,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:17:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:31,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:17:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:31,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:17:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:31,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:17:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:31,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:17:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:31,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:17:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:31,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:17:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:31,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:17:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:31,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:17:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:31,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 17:17:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:31,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:17:31,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:17:31,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808512210] [2022-07-22 17:17:31,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808512210] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:17:31,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:17:31,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 17:17:31,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80087702] [2022-07-22 17:17:31,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:17:31,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 17:17:31,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:17:31,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 17:17:31,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:17:31,354 INFO L87 Difference]: Start difference. First operand 10860 states and 18106 transitions. Second operand has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-22 17:17:41,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:17:41,586 INFO L93 Difference]: Finished difference Result 26794 states and 46681 transitions. [2022-07-22 17:17:41,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 17:17:41,586 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 121 [2022-07-22 17:17:41,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:17:41,649 INFO L225 Difference]: With dead ends: 26794 [2022-07-22 17:17:41,649 INFO L226 Difference]: Without dead ends: 14323 [2022-07-22 17:17:41,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=222, Invalid=770, Unknown=0, NotChecked=0, Total=992 [2022-07-22 17:17:41,683 INFO L413 NwaCegarLoop]: 1074 mSDtfsCounter, 2508 mSDsluCounter, 3623 mSDsCounter, 0 mSdLazyCounter, 7985 mSolverCounterSat, 748 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2530 SdHoareTripleChecker+Valid, 4697 SdHoareTripleChecker+Invalid, 8733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 748 IncrementalHoareTripleChecker+Valid, 7985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:17:41,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2530 Valid, 4697 Invalid, 8733 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [748 Valid, 7985 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-07-22 17:17:41,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14323 states. [2022-07-22 17:17:43,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14323 to 10860. [2022-07-22 17:17:43,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10860 states, 8465 states have (on average 1.567158889545186) internal successors, (13266), 8746 states have internal predecessors, (13266), 1826 states have call successors, (1826), 437 states have call predecessors, (1826), 568 states have return successors, (2810), 1871 states have call predecessors, (2810), 1821 states have call successors, (2810) [2022-07-22 17:17:43,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10860 states to 10860 states and 17902 transitions. [2022-07-22 17:17:43,243 INFO L78 Accepts]: Start accepts. Automaton has 10860 states and 17902 transitions. Word has length 121 [2022-07-22 17:17:43,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:17:43,243 INFO L495 AbstractCegarLoop]: Abstraction has 10860 states and 17902 transitions. [2022-07-22 17:17:43,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-22 17:17:43,244 INFO L276 IsEmpty]: Start isEmpty. Operand 10860 states and 17902 transitions. [2022-07-22 17:17:43,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 17:17:43,247 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:17:43,247 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:17:43,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 17:17:43,247 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:17:43,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:17:43,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1897428458, now seen corresponding path program 1 times [2022-07-22 17:17:43,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:17:43,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035671732] [2022-07-22 17:17:43,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:17:43,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:17:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:43,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:17:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:43,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:17:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:43,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:17:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:43,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:17:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:43,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:17:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:43,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:17:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:43,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:17:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:43,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:17:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:43,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:17:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:43,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:17:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:43,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 17:17:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:43,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:17:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:43,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 17:17:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 17:17:43,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:17:43,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035671732] [2022-07-22 17:17:43,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035671732] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:17:43,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:17:43,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 17:17:43,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802497877] [2022-07-22 17:17:43,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:17:43,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 17:17:43,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:17:43,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 17:17:43,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:17:43,693 INFO L87 Difference]: Start difference. First operand 10860 states and 17902 transitions. Second operand has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-22 17:17:55,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:17:55,026 INFO L93 Difference]: Finished difference Result 25816 states and 45079 transitions. [2022-07-22 17:17:55,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-22 17:17:55,027 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 123 [2022-07-22 17:17:55,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:17:55,101 INFO L225 Difference]: With dead ends: 25816 [2022-07-22 17:17:55,101 INFO L226 Difference]: Without dead ends: 15037 [2022-07-22 17:17:55,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=247, Invalid=875, Unknown=0, NotChecked=0, Total=1122 [2022-07-22 17:17:55,143 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 5201 mSDsluCounter, 2776 mSDsCounter, 0 mSdLazyCounter, 6492 mSolverCounterSat, 1762 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5261 SdHoareTripleChecker+Valid, 3668 SdHoareTripleChecker+Invalid, 8254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1762 IncrementalHoareTripleChecker+Valid, 6492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:17:55,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5261 Valid, 3668 Invalid, 8254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1762 Valid, 6492 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-07-22 17:17:55,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15037 states. [2022-07-22 17:17:56,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15037 to 11088. [2022-07-22 17:17:56,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11088 states, 8579 states have (on average 1.5596223336053152) internal successors, (13380), 8938 states have internal predecessors, (13380), 1862 states have call successors, (1862), 437 states have call predecessors, (1862), 646 states have return successors, (3146), 1907 states have call predecessors, (3146), 1857 states have call successors, (3146) [2022-07-22 17:17:57,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11088 states to 11088 states and 18388 transitions. [2022-07-22 17:17:57,010 INFO L78 Accepts]: Start accepts. Automaton has 11088 states and 18388 transitions. Word has length 123 [2022-07-22 17:17:57,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:17:57,010 INFO L495 AbstractCegarLoop]: Abstraction has 11088 states and 18388 transitions. [2022-07-22 17:17:57,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-22 17:17:57,010 INFO L276 IsEmpty]: Start isEmpty. Operand 11088 states and 18388 transitions. [2022-07-22 17:17:57,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-22 17:17:57,014 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:17:57,015 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:17:57,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 17:17:57,015 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:17:57,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:17:57,015 INFO L85 PathProgramCache]: Analyzing trace with hash -2061516223, now seen corresponding path program 1 times [2022-07-22 17:17:57,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:17:57,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238095106] [2022-07-22 17:17:57,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:17:57,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:17:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:57,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:17:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:57,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:17:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:57,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:17:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:57,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:17:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:57,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:17:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:57,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:17:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:57,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:17:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:57,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:17:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:57,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:17:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:57,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:17:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:57,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:17:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:57,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:17:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:57,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:17:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:17:57,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 17:17:57,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:17:57,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238095106] [2022-07-22 17:17:57,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238095106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:17:57,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:17:57,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 17:17:57,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264853842] [2022-07-22 17:17:57,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:17:57,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 17:17:57,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:17:57,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 17:17:57,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:17:57,533 INFO L87 Difference]: Start difference. First operand 11088 states and 18388 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-22 17:18:08,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:18:08,947 INFO L93 Difference]: Finished difference Result 27680 states and 48012 transitions. [2022-07-22 17:18:08,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-22 17:18:08,948 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 126 [2022-07-22 17:18:08,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:18:09,031 INFO L225 Difference]: With dead ends: 27680 [2022-07-22 17:18:09,032 INFO L226 Difference]: Without dead ends: 16669 [2022-07-22 17:18:09,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2022-07-22 17:18:09,080 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 4396 mSDsluCounter, 2214 mSDsCounter, 0 mSdLazyCounter, 5919 mSolverCounterSat, 1428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4452 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 7347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1428 IncrementalHoareTripleChecker+Valid, 5919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:18:09,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4452 Valid, 3091 Invalid, 7347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1428 Valid, 5919 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-07-22 17:18:09,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16669 states. [2022-07-22 17:18:11,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16669 to 12864. [2022-07-22 17:18:11,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12864 states, 10001 states have (on average 1.5412458754124587) internal successors, (15414), 10402 states have internal predecessors, (15414), 2078 states have call successors, (2078), 551 states have call predecessors, (2078), 784 states have return successors, (3566), 2105 states have call predecessors, (3566), 2073 states have call successors, (3566) [2022-07-22 17:18:11,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12864 states to 12864 states and 21058 transitions. [2022-07-22 17:18:11,240 INFO L78 Accepts]: Start accepts. Automaton has 12864 states and 21058 transitions. Word has length 126 [2022-07-22 17:18:11,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:18:11,240 INFO L495 AbstractCegarLoop]: Abstraction has 12864 states and 21058 transitions. [2022-07-22 17:18:11,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-22 17:18:11,240 INFO L276 IsEmpty]: Start isEmpty. Operand 12864 states and 21058 transitions. [2022-07-22 17:18:11,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-22 17:18:11,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:18:11,244 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:18:11,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 17:18:11,245 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:18:11,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:18:11,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1519227023, now seen corresponding path program 1 times [2022-07-22 17:18:11,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:18:11,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359911599] [2022-07-22 17:18:11,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:18:11,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:18:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:11,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:18:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:11,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:18:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:11,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:18:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:11,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:18:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:11,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:18:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:11,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:18:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:11,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:18:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:11,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:18:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:11,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:18:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:11,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:18:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:11,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 17:18:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:11,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:18:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:11,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 17:18:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:11,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:18:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:11,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 17:18:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:11,678 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 17:18:11,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:18:11,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359911599] [2022-07-22 17:18:11,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359911599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:18:11,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:18:11,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:18:11,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40678263] [2022-07-22 17:18:11,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:18:11,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:18:11,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:18:11,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:18:11,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:18:11,680 INFO L87 Difference]: Start difference. First operand 12864 states and 21058 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-22 17:18:22,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:18:22,547 INFO L93 Difference]: Finished difference Result 41366 states and 73071 transitions. [2022-07-22 17:18:22,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 17:18:22,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 133 [2022-07-22 17:18:22,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:18:22,708 INFO L225 Difference]: With dead ends: 41366 [2022-07-22 17:18:22,708 INFO L226 Difference]: Without dead ends: 28580 [2022-07-22 17:18:22,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:18:22,761 INFO L413 NwaCegarLoop]: 994 mSDtfsCounter, 3170 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 1023 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3245 SdHoareTripleChecker+Valid, 1795 SdHoareTripleChecker+Invalid, 3255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1023 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:18:22,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3245 Valid, 1795 Invalid, 3255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1023 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-07-22 17:18:22,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28580 states. [2022-07-22 17:18:26,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28580 to 22288. [2022-07-22 17:18:26,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22288 states, 17251 states have (on average 1.5401426004289607) internal successors, (26569), 17977 states have internal predecessors, (26569), 3680 states have call successors, (3680), 935 states have call predecessors, (3680), 1356 states have return successors, (6905), 3765 states have call predecessors, (6905), 3675 states have call successors, (6905) [2022-07-22 17:18:26,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22288 states to 22288 states and 37154 transitions. [2022-07-22 17:18:26,774 INFO L78 Accepts]: Start accepts. Automaton has 22288 states and 37154 transitions. Word has length 133 [2022-07-22 17:18:26,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:18:26,776 INFO L495 AbstractCegarLoop]: Abstraction has 22288 states and 37154 transitions. [2022-07-22 17:18:26,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-22 17:18:26,776 INFO L276 IsEmpty]: Start isEmpty. Operand 22288 states and 37154 transitions. [2022-07-22 17:18:26,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 17:18:26,780 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:18:26,780 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:18:26,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 17:18:26,781 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:18:26,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:18:26,781 INFO L85 PathProgramCache]: Analyzing trace with hash 148477100, now seen corresponding path program 1 times [2022-07-22 17:18:26,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:18:26,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635461203] [2022-07-22 17:18:26,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:18:26,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:18:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:26,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:18:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:26,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:18:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:26,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:18:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:27,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:18:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:27,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:18:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:27,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:18:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:27,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:18:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:27,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:18:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:27,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:18:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:27,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:18:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:27,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 17:18:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:27,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:18:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:27,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 17:18:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:27,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:18:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:27,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 17:18:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:27,198 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 17:18:27,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:18:27,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635461203] [2022-07-22 17:18:27,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635461203] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:18:27,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:18:27,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:18:27,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235760273] [2022-07-22 17:18:27,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:18:27,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:18:27,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:18:27,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:18:27,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:18:27,200 INFO L87 Difference]: Start difference. First operand 22288 states and 37154 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-22 17:18:46,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:18:46,475 INFO L93 Difference]: Finished difference Result 75136 states and 139328 transitions. [2022-07-22 17:18:46,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 17:18:46,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 134 [2022-07-22 17:18:46,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:18:46,850 INFO L225 Difference]: With dead ends: 75136 [2022-07-22 17:18:46,851 INFO L226 Difference]: Without dead ends: 52926 [2022-07-22 17:18:46,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:18:46,959 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 2438 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 2800 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2514 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 3631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 2800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:18:46,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2514 Valid, 1970 Invalid, 3631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 2800 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-07-22 17:18:46,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52926 states. [2022-07-22 17:18:55,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52926 to 41140. [2022-07-22 17:18:55,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41140 states, 31755 states have (on average 1.5383719099354431) internal successors, (48851), 33131 states have internal predecessors, (48851), 6884 states have call successors, (6884), 1703 states have call predecessors, (6884), 2500 states have return successors, (14606), 7085 states have call predecessors, (14606), 6879 states have call successors, (14606) [2022-07-22 17:18:55,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41140 states to 41140 states and 70341 transitions. [2022-07-22 17:18:55,621 INFO L78 Accepts]: Start accepts. Automaton has 41140 states and 70341 transitions. Word has length 134 [2022-07-22 17:18:55,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:18:55,621 INFO L495 AbstractCegarLoop]: Abstraction has 41140 states and 70341 transitions. [2022-07-22 17:18:55,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-22 17:18:55,622 INFO L276 IsEmpty]: Start isEmpty. Operand 41140 states and 70341 transitions. [2022-07-22 17:18:55,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-22 17:18:55,627 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:18:55,627 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:18:55,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 17:18:55,628 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:18:55,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:18:55,628 INFO L85 PathProgramCache]: Analyzing trace with hash 307701267, now seen corresponding path program 1 times [2022-07-22 17:18:55,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:18:55,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358006344] [2022-07-22 17:18:55,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:18:55,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:18:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:55,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:18:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:55,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:18:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:55,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:18:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:55,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:18:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:55,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:18:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:55,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:18:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:56,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:18:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:56,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:18:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:56,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:18:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:56,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:18:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:56,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 17:18:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:56,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:18:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:56,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 17:18:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:56,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:18:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:56,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 17:18:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:18:56,025 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 17:18:56,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:18:56,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358006344] [2022-07-22 17:18:56,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358006344] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:18:56,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:18:56,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:18:56,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443521614] [2022-07-22 17:18:56,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:18:56,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:18:56,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:18:56,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:18:56,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:18:56,027 INFO L87 Difference]: Start difference. First operand 41140 states and 70341 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-22 17:19:25,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:19:25,289 INFO L93 Difference]: Finished difference Result 142680 states and 286206 transitions. [2022-07-22 17:19:25,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 17:19:25,291 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 135 [2022-07-22 17:19:25,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:19:26,627 INFO L225 Difference]: With dead ends: 142680 [2022-07-22 17:19:26,627 INFO L226 Difference]: Without dead ends: 101618 [2022-07-22 17:19:26,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:19:26,944 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 4040 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 1878 mSolverCounterSat, 1271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4116 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 3149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1271 IncrementalHoareTripleChecker+Valid, 1878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:19:26,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4116 Valid, 1691 Invalid, 3149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1271 Valid, 1878 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-07-22 17:19:27,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101618 states. [2022-07-22 17:19:42,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101618 to 78848. [2022-07-22 17:19:43,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78848 states, 60767 states have (on average 1.5360804383958397) internal successors, (93343), 63443 states have internal predecessors, (93343), 13292 states have call successors, (13292), 3239 states have call predecessors, (13292), 4788 states have return successors, (33466), 13725 states have call predecessors, (33466), 13287 states have call successors, (33466) [2022-07-22 17:19:43,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78848 states to 78848 states and 140101 transitions. [2022-07-22 17:19:43,979 INFO L78 Accepts]: Start accepts. Automaton has 78848 states and 140101 transitions. Word has length 135 [2022-07-22 17:19:43,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:19:43,980 INFO L495 AbstractCegarLoop]: Abstraction has 78848 states and 140101 transitions. [2022-07-22 17:19:43,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-22 17:19:43,980 INFO L276 IsEmpty]: Start isEmpty. Operand 78848 states and 140101 transitions. [2022-07-22 17:19:43,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-22 17:19:43,987 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:19:43,987 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 17:19:43,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 17:19:43,987 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:19:43,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:19:43,987 INFO L85 PathProgramCache]: Analyzing trace with hash 948687054, now seen corresponding path program 1 times [2022-07-22 17:19:43,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:19:43,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335885377] [2022-07-22 17:19:43,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:19:43,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:19:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:19:44,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:19:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:19:44,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:19:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:19:44,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:19:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:19:44,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:19:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:19:44,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:19:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:19:44,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:19:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:19:44,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:19:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:19:44,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:19:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:19:44,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:19:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:19:44,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:19:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:19:44,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 17:19:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:19:44,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:19:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:19:44,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 17:19:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:19:44,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:19:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:19:44,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 17:19:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:19:44,387 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 17:19:44,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:19:44,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335885377] [2022-07-22 17:19:44,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335885377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:19:44,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:19:44,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:19:44,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906662023] [2022-07-22 17:19:44,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:19:44,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:19:44,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:19:44,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:19:44,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:19:44,389 INFO L87 Difference]: Start difference. First operand 78848 states and 140101 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15)