./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product11.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_spec2_product11.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 8e809cb7921b0f8738511433928ba20d09f78a0d0fe23412d97e6052fa9e13ec --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:04:24,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:04:24,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:04:24,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:04:24,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:04:24,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:04:24,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:04:24,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:04:24,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:04:24,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:04:24,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:04:24,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:04:24,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:04:24,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:04:24,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:04:24,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:04:24,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:04:24,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:04:24,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:04:24,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:04:24,389 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:04:24,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:04:24,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:04:24,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:04:24,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:04:24,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:04:24,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:04:24,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:04:24,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:04:24,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:04:24,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:04:24,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:04:24,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:04:24,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:04:24,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:04:24,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:04:24,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:04:24,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:04:24,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:04:24,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:04:24,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:04:24,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:04:24,407 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:04:24,428 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:04:24,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:04:24,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:04:24,433 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:04:24,433 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:04:24,433 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:04:24,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:04:24,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:04:24,434 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:04:24,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:04:24,435 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:04:24,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:04:24,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:04:24,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:04:24,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:04:24,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:04:24,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:04:24,436 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:04:24,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:04:24,437 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:04:24,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:04:24,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:04:24,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:04:24,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:04:24,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:04:24,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:04:24,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:04:24,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:04:24,439 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:04:24,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:04:24,440 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:04:24,440 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:04:24,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:04:24,440 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e809cb7921b0f8738511433928ba20d09f78a0d0fe23412d97e6052fa9e13ec [2022-07-22 17:04:24,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:04:24,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:04:24,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:04:24,685 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:04:24,685 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:04:24,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product11.cil.c [2022-07-22 17:04:24,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13099e600/cf2dd6612975496a9f4d6e0850669e64/FLAG7b74675ef [2022-07-22 17:04:25,160 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:04:25,161 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product11.cil.c [2022-07-22 17:04:25,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13099e600/cf2dd6612975496a9f4d6e0850669e64/FLAG7b74675ef [2022-07-22 17:04:25,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13099e600/cf2dd6612975496a9f4d6e0850669e64 [2022-07-22 17:04:25,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:04:25,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:04:25,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:04:25,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:04:25,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:04:25,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:04:25" (1/1) ... [2022-07-22 17:04:25,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c1cfa67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:04:25, skipping insertion in model container [2022-07-22 17:04:25,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:04:25" (1/1) ... [2022-07-22 17:04:25,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:04:25,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:04:25,423 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product11.cil.c[1545,1558] [2022-07-22 17:04:25,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:04:25,717 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:04:25,736 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product11.cil.c[1545,1558] [2022-07-22 17:04:25,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:04:25,855 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:04:25,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:04:25 WrapperNode [2022-07-22 17:04:25,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:04:25,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:04:25,857 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:04:25,857 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:04:25,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:04:25" (1/1) ... [2022-07-22 17:04:25,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:04:25" (1/1) ... [2022-07-22 17:04:25,924 INFO L137 Inliner]: procedures = 93, calls = 338, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1129 [2022-07-22 17:04:25,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:04:25,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:04:25,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:04:25,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:04:25,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:04:25" (1/1) ... [2022-07-22 17:04:25,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:04:25" (1/1) ... [2022-07-22 17:04:25,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:04:25" (1/1) ... [2022-07-22 17:04:25,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:04:25" (1/1) ... [2022-07-22 17:04:25,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:04:25" (1/1) ... [2022-07-22 17:04:25,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:04:25" (1/1) ... [2022-07-22 17:04:26,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:04:25" (1/1) ... [2022-07-22 17:04:26,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:04:26,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:04:26,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:04:26,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:04:26,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:04:25" (1/1) ... [2022-07-22 17:04:26,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:04:26,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:04:26,051 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 17:04:26,065 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 17:04:26,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:04:26,087 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-22 17:04:26,087 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-22 17:04:26,087 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-22 17:04:26,088 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-22 17:04:26,088 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-07-22 17:04:26,088 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-07-22 17:04:26,088 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-22 17:04:26,088 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-22 17:04:26,088 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-22 17:04:26,088 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-22 17:04:26,088 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-22 17:04:26,089 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-22 17:04:26,089 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-22 17:04:26,089 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-22 17:04:26,089 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-22 17:04:26,089 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-22 17:04:26,089 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-22 17:04:26,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-22 17:04:26,089 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-22 17:04:26,089 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-22 17:04:26,090 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-22 17:04:26,090 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-22 17:04:26,090 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-22 17:04:26,090 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-22 17:04:26,090 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-22 17:04:26,090 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-22 17:04:26,090 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-22 17:04:26,090 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-22 17:04:26,090 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-07-22 17:04:26,091 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-07-22 17:04:26,091 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-22 17:04:26,091 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-22 17:04:26,091 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-22 17:04:26,091 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-22 17:04:26,091 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-22 17:04:26,092 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-22 17:04:26,092 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-22 17:04:26,092 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-22 17:04:26,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:04:26,092 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-22 17:04:26,092 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-22 17:04:26,092 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-22 17:04:26,092 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-22 17:04:26,092 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-22 17:04:26,093 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-22 17:04:26,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:04:26,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:04:26,093 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-22 17:04:26,093 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-22 17:04:26,261 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:04:26,262 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:04:26,955 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:04:26,971 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:04:26,972 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 17:04:26,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:04:26 BoogieIcfgContainer [2022-07-22 17:04:26,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:04:26,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:04:26,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:04:26,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:04:26,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:04:25" (1/3) ... [2022-07-22 17:04:26,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fde3386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:04:26, skipping insertion in model container [2022-07-22 17:04:26,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:04:25" (2/3) ... [2022-07-22 17:04:26,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fde3386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:04:26, skipping insertion in model container [2022-07-22 17:04:26,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:04:26" (3/3) ... [2022-07-22 17:04:26,982 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product11.cil.c [2022-07-22 17:04:26,992 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:04:26,992 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:04:27,061 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:04:27,067 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@22f3a937, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@61ef46d1 [2022-07-22 17:04:27,068 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:04:27,081 INFO L276 IsEmpty]: Start isEmpty. Operand has 554 states, 435 states have (on average 1.696551724137931) internal successors, (738), 456 states have internal predecessors, (738), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) [2022-07-22 17:04:27,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 17:04:27,105 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:04:27,106 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:04:27,106 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:04:27,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:04:27,111 INFO L85 PathProgramCache]: Analyzing trace with hash 352801324, now seen corresponding path program 1 times [2022-07-22 17:04:27,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:04:27,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423104714] [2022-07-22 17:04:27,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:04:27,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:04:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:27,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:04:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:27,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:27,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:04:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:27,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 17:04:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:27,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:27,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:27,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:27,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:04:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:27,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:04:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:27,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:27,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:27,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:04:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:27,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 17:04:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:27,882 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:04:27,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:04:27,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423104714] [2022-07-22 17:04:27,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423104714] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:04:27,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:04:27,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:04:27,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281117960] [2022-07-22 17:04:27,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:04:27,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:04:27,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:04:27,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:04:27,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:04:27,920 INFO L87 Difference]: Start difference. First operand has 554 states, 435 states have (on average 1.696551724137931) internal successors, (738), 456 states have internal predecessors, (738), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:04:32,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:04:32,450 INFO L93 Difference]: Finished difference Result 1356 states and 2317 transitions. [2022-07-22 17:04:32,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 17:04:32,452 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-07-22 17:04:32,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:04:32,467 INFO L225 Difference]: With dead ends: 1356 [2022-07-22 17:04:32,467 INFO L226 Difference]: Without dead ends: 814 [2022-07-22 17:04:32,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:04:32,474 INFO L413 NwaCegarLoop]: 965 mSDtfsCounter, 983 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 2681 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 2398 SdHoareTripleChecker+Invalid, 2951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 2681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:04:32,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 2398 Invalid, 2951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 2681 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-22 17:04:32,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-22 17:04:32,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 546. [2022-07-22 17:04:32,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 429 states have (on average 1.6923076923076923) internal successors, (726), 448 states have internal predecessors, (726), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-22 17:04:32,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 909 transitions. [2022-07-22 17:04:32,588 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 909 transitions. Word has length 102 [2022-07-22 17:04:32,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:04:32,588 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 909 transitions. [2022-07-22 17:04:32,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:04:32,589 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 909 transitions. [2022-07-22 17:04:32,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 17:04:32,592 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:04:32,593 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:04:32,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 17:04:32,593 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:04:32,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:04:32,594 INFO L85 PathProgramCache]: Analyzing trace with hash 2003886984, now seen corresponding path program 1 times [2022-07-22 17:04:32,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:04:32,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833335738] [2022-07-22 17:04:32,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:04:32,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:04:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:32,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:04:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:32,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:32,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:04:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:32,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 17:04:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:32,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:32,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:32,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:32,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:04:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:32,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:04:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:32,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:32,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:32,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:04:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:32,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 17:04:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:32,964 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:04:32,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:04:32,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833335738] [2022-07-22 17:04:32,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833335738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:04:32,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:04:32,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:04:32,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898576340] [2022-07-22 17:04:32,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:04:32,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:04:32,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:04:32,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:04:32,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:04:32,968 INFO L87 Difference]: Start difference. First operand 546 states and 909 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:04:36,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:04:36,901 INFO L93 Difference]: Finished difference Result 1342 states and 2279 transitions. [2022-07-22 17:04:36,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 17:04:36,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2022-07-22 17:04:36,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:04:36,907 INFO L225 Difference]: With dead ends: 1342 [2022-07-22 17:04:36,907 INFO L226 Difference]: Without dead ends: 814 [2022-07-22 17:04:36,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:04:36,909 INFO L413 NwaCegarLoop]: 969 mSDtfsCounter, 1396 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 2594 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 3009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 2594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:04:36,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 2330 Invalid, 3009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 2594 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-22 17:04:36,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-22 17:04:36,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 546. [2022-07-22 17:04:36,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 429 states have (on average 1.68997668997669) internal successors, (725), 448 states have internal predecessors, (725), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-22 17:04:36,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 908 transitions. [2022-07-22 17:04:36,953 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 908 transitions. Word has length 105 [2022-07-22 17:04:36,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:04:36,954 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 908 transitions. [2022-07-22 17:04:36,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:04:36,955 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 908 transitions. [2022-07-22 17:04:36,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 17:04:36,957 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:04:36,957 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:04:36,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 17:04:36,958 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:04:36,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:04:36,958 INFO L85 PathProgramCache]: Analyzing trace with hash -2013499396, now seen corresponding path program 1 times [2022-07-22 17:04:36,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:04:36,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914283764] [2022-07-22 17:04:36,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:04:36,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:04:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:37,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:04:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:37,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:37,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:04:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:37,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 17:04:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:37,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:37,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:37,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:37,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:04:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:37,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:04:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:37,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:37,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:37,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:04:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:37,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 17:04:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:37,276 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:04:37,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:04:37,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914283764] [2022-07-22 17:04:37,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914283764] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:04:37,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:04:37,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:04:37,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954820573] [2022-07-22 17:04:37,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:04:37,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:04:37,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:04:37,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:04:37,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:04:37,279 INFO L87 Difference]: Start difference. First operand 546 states and 908 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:04:40,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:04:40,788 INFO L93 Difference]: Finished difference Result 1342 states and 2278 transitions. [2022-07-22 17:04:40,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 17:04:40,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2022-07-22 17:04:40,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:04:40,793 INFO L225 Difference]: With dead ends: 1342 [2022-07-22 17:04:40,793 INFO L226 Difference]: Without dead ends: 814 [2022-07-22 17:04:40,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:04:40,796 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 1401 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 2464 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 2876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 2464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:04:40,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 2326 Invalid, 2876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 2464 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-22 17:04:40,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-22 17:04:40,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 546. [2022-07-22 17:04:40,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 429 states have (on average 1.6876456876456876) internal successors, (724), 448 states have internal predecessors, (724), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-22 17:04:40,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 907 transitions. [2022-07-22 17:04:40,884 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 907 transitions. Word has length 106 [2022-07-22 17:04:40,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:04:40,885 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 907 transitions. [2022-07-22 17:04:40,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:04:40,885 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 907 transitions. [2022-07-22 17:04:40,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-22 17:04:40,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:04:40,890 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:04:40,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 17:04:40,891 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:04:40,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:04:40,891 INFO L85 PathProgramCache]: Analyzing trace with hash -2055426172, now seen corresponding path program 1 times [2022-07-22 17:04:40,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:04:40,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244608681] [2022-07-22 17:04:40,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:04:40,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:04:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:41,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:04:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:41,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:41,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 17:04:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:41,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:04:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:41,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:41,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:41,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:41,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:04:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:41,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:04:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:41,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:41,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:41,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:04:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:41,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 17:04:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:41,314 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:04:41,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:04:41,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244608681] [2022-07-22 17:04:41,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244608681] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:04:41,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:04:41,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:04:41,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237824398] [2022-07-22 17:04:41,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:04:41,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:04:41,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:04:41,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:04:41,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:04:41,318 INFO L87 Difference]: Start difference. First operand 546 states and 907 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:04:44,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:04:44,863 INFO L93 Difference]: Finished difference Result 1342 states and 2277 transitions. [2022-07-22 17:04:44,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 17:04:44,864 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2022-07-22 17:04:44,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:04:44,867 INFO L225 Difference]: With dead ends: 1342 [2022-07-22 17:04:44,868 INFO L226 Difference]: Without dead ends: 814 [2022-07-22 17:04:44,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:04:44,878 INFO L413 NwaCegarLoop]: 967 mSDtfsCounter, 1815 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 2404 mSolverCounterSat, 564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 2968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 2404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:04:44,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1894 Valid, 2257 Invalid, 2968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [564 Valid, 2404 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-22 17:04:44,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-22 17:04:44,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 546. [2022-07-22 17:04:44,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 429 states have (on average 1.6853146853146854) internal successors, (723), 448 states have internal predecessors, (723), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-22 17:04:44,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 906 transitions. [2022-07-22 17:04:44,923 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 906 transitions. Word has length 107 [2022-07-22 17:04:44,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:04:44,923 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 906 transitions. [2022-07-22 17:04:44,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:04:44,924 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 906 transitions. [2022-07-22 17:04:44,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-22 17:04:44,926 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:04:44,926 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:04:44,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 17:04:44,926 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:04:44,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:04:44,927 INFO L85 PathProgramCache]: Analyzing trace with hash 882810488, now seen corresponding path program 1 times [2022-07-22 17:04:44,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:04:44,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476409924] [2022-07-22 17:04:44,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:04:44,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:04:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:45,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:04:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:45,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:45,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 17:04:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:45,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 17:04:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:45,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:45,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:45,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:45,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:04:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:45,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:04:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:45,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:45,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:45,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:04:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:45,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 17:04:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:45,198 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:04:45,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:04:45,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476409924] [2022-07-22 17:04:45,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476409924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:04:45,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:04:45,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:04:45,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635966436] [2022-07-22 17:04:45,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:04:45,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:04:45,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:04:45,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:04:45,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:04:45,200 INFO L87 Difference]: Start difference. First operand 546 states and 906 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:04:48,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:04:48,940 INFO L93 Difference]: Finished difference Result 1342 states and 2276 transitions. [2022-07-22 17:04:48,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 17:04:48,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2022-07-22 17:04:48,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:04:48,945 INFO L225 Difference]: With dead ends: 1342 [2022-07-22 17:04:48,945 INFO L226 Difference]: Without dead ends: 814 [2022-07-22 17:04:48,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:04:48,951 INFO L413 NwaCegarLoop]: 966 mSDtfsCounter, 971 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 2683 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 2948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 2683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:04:48,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1050 Valid, 2382 Invalid, 2948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 2683 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-22 17:04:48,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-22 17:04:48,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 546. [2022-07-22 17:04:48,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 429 states have (on average 1.682983682983683) internal successors, (722), 448 states have internal predecessors, (722), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-22 17:04:48,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 905 transitions. [2022-07-22 17:04:49,000 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 905 transitions. Word has length 108 [2022-07-22 17:04:49,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:04:49,000 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 905 transitions. [2022-07-22 17:04:49,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:04:49,001 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 905 transitions. [2022-07-22 17:04:49,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 17:04:49,003 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:04:49,003 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:04:49,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 17:04:49,003 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:04:49,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:04:49,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1716833152, now seen corresponding path program 1 times [2022-07-22 17:04:49,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:04:49,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933970648] [2022-07-22 17:04:49,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:04:49,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:04:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:49,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:04:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:49,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:49,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:04:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:49,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:04:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:49,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:49,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:49,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:49,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:49,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:04:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:49,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:04:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:49,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:49,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:49,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:04:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:49,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 17:04:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:49,323 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:04:49,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:04:49,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933970648] [2022-07-22 17:04:49,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933970648] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:04:49,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:04:49,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:04:49,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090918038] [2022-07-22 17:04:49,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:04:49,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:04:49,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:04:49,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:04:49,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:04:49,325 INFO L87 Difference]: Start difference. First operand 546 states and 905 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:04:52,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:04:52,644 INFO L93 Difference]: Finished difference Result 1302 states and 2200 transitions. [2022-07-22 17:04:52,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:04:52,644 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2022-07-22 17:04:52,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:04:52,648 INFO L225 Difference]: With dead ends: 1302 [2022-07-22 17:04:52,648 INFO L226 Difference]: Without dead ends: 814 [2022-07-22 17:04:52,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:04:52,650 INFO L413 NwaCegarLoop]: 914 mSDtfsCounter, 1853 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 2359 mSolverCounterSat, 628 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1932 SdHoareTripleChecker+Valid, 2204 SdHoareTripleChecker+Invalid, 2987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 628 IncrementalHoareTripleChecker+Valid, 2359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:04:52,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1932 Valid, 2204 Invalid, 2987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [628 Valid, 2359 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-22 17:04:52,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-22 17:04:52,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 546. [2022-07-22 17:04:52,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 429 states have (on average 1.6713286713286712) internal successors, (717), 448 states have internal predecessors, (717), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-22 17:04:52,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 900 transitions. [2022-07-22 17:04:52,694 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 900 transitions. Word has length 109 [2022-07-22 17:04:52,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:04:52,694 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 900 transitions. [2022-07-22 17:04:52,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:04:52,694 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 900 transitions. [2022-07-22 17:04:52,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-22 17:04:52,696 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:04:52,697 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:04:52,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 17:04:52,697 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:04:52,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:04:52,697 INFO L85 PathProgramCache]: Analyzing trace with hash 773653238, now seen corresponding path program 1 times [2022-07-22 17:04:52,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:04:52,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410267961] [2022-07-22 17:04:52,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:04:52,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:04:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:52,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:04:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:52,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:52,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:04:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:52,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:04:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:52,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:52,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:52,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:52,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:04:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:52,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:04:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:52,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:52,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:52,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:04:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:52,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 17:04:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:52,979 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:04:52,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:04:52,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410267961] [2022-07-22 17:04:52,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410267961] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:04:52,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:04:52,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:04:52,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854424012] [2022-07-22 17:04:52,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:04:52,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:04:52,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:04:52,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:04:52,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:04:52,981 INFO L87 Difference]: Start difference. First operand 546 states and 900 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:04:56,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:04:56,402 INFO L93 Difference]: Finished difference Result 1302 states and 2195 transitions. [2022-07-22 17:04:56,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:04:56,403 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2022-07-22 17:04:56,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:04:56,407 INFO L225 Difference]: With dead ends: 1302 [2022-07-22 17:04:56,407 INFO L226 Difference]: Without dead ends: 814 [2022-07-22 17:04:56,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:04:56,409 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 1862 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 2344 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1941 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 2970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 2344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:04:56,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1941 Valid, 2180 Invalid, 2970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 2344 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-22 17:04:56,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-22 17:04:56,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 546. [2022-07-22 17:04:56,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 429 states have (on average 1.6596736596736597) internal successors, (712), 448 states have internal predecessors, (712), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-22 17:04:56,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 895 transitions. [2022-07-22 17:04:56,455 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 895 transitions. Word has length 110 [2022-07-22 17:04:56,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:04:56,455 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 895 transitions. [2022-07-22 17:04:56,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:04:56,456 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 895 transitions. [2022-07-22 17:04:56,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 17:04:56,458 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:04:56,458 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:04:56,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 17:04:56,459 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:04:56,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:04:56,459 INFO L85 PathProgramCache]: Analyzing trace with hash -151396923, now seen corresponding path program 1 times [2022-07-22 17:04:56,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:04:56,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909869561] [2022-07-22 17:04:56,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:04:56,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:04:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:56,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:04:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:56,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:56,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:04:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:56,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:04:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:56,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:56,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:56,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:56,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:04:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:56,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:04:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:56,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:56,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:04:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:56,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:04:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:56,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 17:04:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:04:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:04:56,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:04:56,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909869561] [2022-07-22 17:04:56,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909869561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:04:56,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:04:56,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:04:56,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002144997] [2022-07-22 17:04:56,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:04:56,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:04:56,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:04:56,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:04:56,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:04:56,763 INFO L87 Difference]: Start difference. First operand 546 states and 895 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:05:00,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:05:00,212 INFO L93 Difference]: Finished difference Result 1302 states and 2190 transitions. [2022-07-22 17:05:00,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:05:00,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2022-07-22 17:05:00,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:05:00,220 INFO L225 Difference]: With dead ends: 1302 [2022-07-22 17:05:00,220 INFO L226 Difference]: Without dead ends: 814 [2022-07-22 17:05:00,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:05:00,235 INFO L413 NwaCegarLoop]: 912 mSDtfsCounter, 1855 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1934 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 2943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:05:00,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1934 Valid, 2199 Invalid, 2943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-22 17:05:00,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-22 17:05:00,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 546. [2022-07-22 17:05:00,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 429 states have (on average 1.648018648018648) internal successors, (707), 448 states have internal predecessors, (707), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-22 17:05:00,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 890 transitions. [2022-07-22 17:05:00,307 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 890 transitions. Word has length 111 [2022-07-22 17:05:00,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:05:00,308 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 890 transitions. [2022-07-22 17:05:00,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:05:00,308 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 890 transitions. [2022-07-22 17:05:00,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 17:05:00,311 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:05:00,311 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:05:00,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 17:05:00,311 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:05:00,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:05:00,312 INFO L85 PathProgramCache]: Analyzing trace with hash -514424741, now seen corresponding path program 1 times [2022-07-22 17:05:00,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:05:00,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413270363] [2022-07-22 17:05:00,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:05:00,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:05:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:00,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:05:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:00,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:00,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:05:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:00,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:05:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:00,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:00,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:00,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:00,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:05:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:00,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:05:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:00,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:00,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:00,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:05:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:00,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 17:05:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:00,649 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:05:00,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:05:00,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413270363] [2022-07-22 17:05:00,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413270363] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:05:00,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:05:00,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:05:00,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96577067] [2022-07-22 17:05:00,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:05:00,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:05:00,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:05:00,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:05:00,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:05:00,652 INFO L87 Difference]: Start difference. First operand 546 states and 890 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:05:04,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:05:04,038 INFO L93 Difference]: Finished difference Result 1302 states and 2185 transitions. [2022-07-22 17:05:04,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:05:04,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-07-22 17:05:04,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:05:04,043 INFO L225 Difference]: With dead ends: 1302 [2022-07-22 17:05:04,043 INFO L226 Difference]: Without dead ends: 814 [2022-07-22 17:05:04,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:05:04,047 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 1870 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1949 SdHoareTripleChecker+Valid, 2217 SdHoareTripleChecker+Invalid, 2900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:05:04,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1949 Valid, 2217 Invalid, 2900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [595 Valid, 2305 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-22 17:05:04,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-22 17:05:04,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 546. [2022-07-22 17:05:04,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 429 states have (on average 1.6363636363636365) internal successors, (702), 448 states have internal predecessors, (702), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-22 17:05:04,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 885 transitions. [2022-07-22 17:05:04,111 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 885 transitions. Word has length 112 [2022-07-22 17:05:04,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:05:04,111 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 885 transitions. [2022-07-22 17:05:04,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:05:04,111 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 885 transitions. [2022-07-22 17:05:04,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 17:05:04,113 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:05:04,113 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:05:04,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 17:05:04,114 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:05:04,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:05:04,114 INFO L85 PathProgramCache]: Analyzing trace with hash 124965308, now seen corresponding path program 1 times [2022-07-22 17:05:04,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:05:04,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785420142] [2022-07-22 17:05:04,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:05:04,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:05:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:04,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:05:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:04,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:04,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:05:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:04,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:05:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:04,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:04,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:04,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:04,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:05:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:04,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:05:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:04,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:04,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:04,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:05:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:04,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 17:05:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:04,445 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:05:04,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:05:04,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785420142] [2022-07-22 17:05:04,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785420142] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:05:04,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:05:04,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:05:04,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215789974] [2022-07-22 17:05:04,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:05:04,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:05:04,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:05:04,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:05:04,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:05:04,446 INFO L87 Difference]: Start difference. First operand 546 states and 885 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:05:08,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:05:08,250 INFO L93 Difference]: Finished difference Result 1317 states and 2200 transitions. [2022-07-22 17:05:08,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 17:05:08,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-07-22 17:05:08,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:05:08,255 INFO L225 Difference]: With dead ends: 1317 [2022-07-22 17:05:08,255 INFO L226 Difference]: Without dead ends: 835 [2022-07-22 17:05:08,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:05:08,258 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 1875 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:05:08,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1954 Valid, 2206 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-22 17:05:08,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-07-22 17:05:08,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 548. [2022-07-22 17:05:08,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 431 states have (on average 1.6334106728538282) internal successors, (704), 450 states have internal predecessors, (704), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-22 17:05:08,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 887 transitions. [2022-07-22 17:05:08,367 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 887 transitions. Word has length 112 [2022-07-22 17:05:08,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:05:08,368 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 887 transitions. [2022-07-22 17:05:08,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:05:08,368 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 887 transitions. [2022-07-22 17:05:08,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 17:05:08,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:05:08,370 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:05:08,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 17:05:08,370 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:05:08,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:05:08,371 INFO L85 PathProgramCache]: Analyzing trace with hash -634629110, now seen corresponding path program 1 times [2022-07-22 17:05:08,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:05:08,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401904169] [2022-07-22 17:05:08,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:05:08,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:05:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:08,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:05:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:08,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:08,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:05:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:08,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:05:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:08,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:08,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:08,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:08,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:05:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:08,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:05:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:08,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:08,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:08,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:05:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:08,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 17:05:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:08,694 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:05:08,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:05:08,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401904169] [2022-07-22 17:05:08,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401904169] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:05:08,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:05:08,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:05:08,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831298146] [2022-07-22 17:05:08,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:05:08,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:05:08,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:05:08,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:05:08,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:05:08,697 INFO L87 Difference]: Start difference. First operand 548 states and 887 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:05:11,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:05:11,791 INFO L93 Difference]: Finished difference Result 1308 states and 2186 transitions. [2022-07-22 17:05:11,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:05:11,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-07-22 17:05:11,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:05:11,796 INFO L225 Difference]: With dead ends: 1308 [2022-07-22 17:05:11,796 INFO L226 Difference]: Without dead ends: 818 [2022-07-22 17:05:11,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:05:11,798 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 1457 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 2794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:05:11,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 2234 Invalid, 2794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 2349 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-22 17:05:11,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-07-22 17:05:11,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 548. [2022-07-22 17:05:11,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 431 states have (on average 1.6218097447795823) internal successors, (699), 450 states have internal predecessors, (699), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-22 17:05:11,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 882 transitions. [2022-07-22 17:05:11,898 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 882 transitions. Word has length 113 [2022-07-22 17:05:11,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:05:11,898 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 882 transitions. [2022-07-22 17:05:11,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:05:11,899 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 882 transitions. [2022-07-22 17:05:11,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 17:05:11,901 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:05:11,901 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:05:11,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 17:05:11,901 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:05:11,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:05:11,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1378714425, now seen corresponding path program 1 times [2022-07-22 17:05:11,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:05:11,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834056940] [2022-07-22 17:05:11,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:05:11,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:05:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:11,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:05:11,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:11,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:11,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:05:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:12,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:05:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:12,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:12,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:12,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:12,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:05:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:12,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:05:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:12,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:12,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:12,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:05:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:12,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 17:05:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:12,161 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:05:12,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:05:12,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834056940] [2022-07-22 17:05:12,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834056940] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:05:12,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:05:12,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:05:12,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24902725] [2022-07-22 17:05:12,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:05:12,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:05:12,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:05:12,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:05:12,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:05:12,163 INFO L87 Difference]: Start difference. First operand 548 states and 882 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:05:15,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:05:15,518 INFO L93 Difference]: Finished difference Result 1321 states and 2197 transitions. [2022-07-22 17:05:15,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 17:05:15,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-07-22 17:05:15,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:05:15,522 INFO L225 Difference]: With dead ends: 1321 [2022-07-22 17:05:15,522 INFO L226 Difference]: Without dead ends: 839 [2022-07-22 17:05:15,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:05:15,524 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 1032 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 2518 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 2339 SdHoareTripleChecker+Invalid, 2803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 2518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:05:15,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 2339 Invalid, 2803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 2518 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 17:05:15,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2022-07-22 17:05:15,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 551. [2022-07-22 17:05:15,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 434 states have (on average 1.6175115207373272) internal successors, (702), 453 states have internal predecessors, (702), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-22 17:05:15,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 885 transitions. [2022-07-22 17:05:15,579 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 885 transitions. Word has length 113 [2022-07-22 17:05:15,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:05:15,579 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 885 transitions. [2022-07-22 17:05:15,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:05:15,580 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 885 transitions. [2022-07-22 17:05:15,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 17:05:15,582 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:05:15,582 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:05:15,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 17:05:15,582 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:05:15,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:05:15,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1817241152, now seen corresponding path program 1 times [2022-07-22 17:05:15,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:05:15,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724392695] [2022-07-22 17:05:15,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:05:15,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:05:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:15,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:05:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:15,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:15,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:05:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:15,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 17:05:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:15,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:15,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:15,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:15,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:05:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:15,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:05:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:15,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:15,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:15,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:05:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:15,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 17:05:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:15,919 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:05:15,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:05:15,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724392695] [2022-07-22 17:05:15,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724392695] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:05:15,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:05:15,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:05:15,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855308996] [2022-07-22 17:05:15,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:05:15,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:05:15,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:05:15,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:05:15,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:05:15,921 INFO L87 Difference]: Start difference. First operand 551 states and 885 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:05:20,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:05:20,243 INFO L93 Difference]: Finished difference Result 1325 states and 2203 transitions. [2022-07-22 17:05:20,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:05:20,244 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 114 [2022-07-22 17:05:20,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:05:20,249 INFO L225 Difference]: With dead ends: 1325 [2022-07-22 17:05:20,250 INFO L226 Difference]: Without dead ends: 846 [2022-07-22 17:05:20,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-22 17:05:20,256 INFO L413 NwaCegarLoop]: 945 mSDtfsCounter, 1044 mSDsluCounter, 2853 mSDsCounter, 0 mSdLazyCounter, 4970 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 3798 SdHoareTripleChecker+Invalid, 5242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 4970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:05:20,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1124 Valid, 3798 Invalid, 5242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 4970 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-22 17:05:20,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2022-07-22 17:05:20,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 562. [2022-07-22 17:05:20,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 442 states have (on average 1.6131221719457014) internal successors, (713), 463 states have internal predecessors, (713), 95 states have call successors, (95), 23 states have call predecessors, (95), 24 states have return successors, (92), 88 states have call predecessors, (92), 90 states have call successors, (92) [2022-07-22 17:05:20,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 900 transitions. [2022-07-22 17:05:20,340 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 900 transitions. Word has length 114 [2022-07-22 17:05:20,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:05:20,341 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 900 transitions. [2022-07-22 17:05:20,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:05:20,341 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 900 transitions. [2022-07-22 17:05:20,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 17:05:20,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:05:20,344 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:05:20,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 17:05:20,344 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:05:20,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:05:20,345 INFO L85 PathProgramCache]: Analyzing trace with hash 416510945, now seen corresponding path program 1 times [2022-07-22 17:05:20,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:05:20,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823432058] [2022-07-22 17:05:20,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:05:20,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:05:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:20,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:05:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:20,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:20,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:05:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:20,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 17:05:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:20,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:20,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:20,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:20,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:05:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:20,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:05:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:20,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:20,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:20,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:05:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:20,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 17:05:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:20,684 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:05:20,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:05:20,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823432058] [2022-07-22 17:05:20,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823432058] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:05:20,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:05:20,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:05:20,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201676449] [2022-07-22 17:05:20,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:05:20,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:05:20,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:05:20,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:05:20,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:05:20,687 INFO L87 Difference]: Start difference. First operand 562 states and 900 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:05:23,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:05:23,783 INFO L93 Difference]: Finished difference Result 1348 states and 2234 transitions. [2022-07-22 17:05:23,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 17:05:23,783 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-07-22 17:05:23,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:05:23,787 INFO L225 Difference]: With dead ends: 1348 [2022-07-22 17:05:23,787 INFO L226 Difference]: Without dead ends: 863 [2022-07-22 17:05:23,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:05:23,789 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 1450 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 2345 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 2285 SdHoareTripleChecker+Invalid, 2771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 2345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:05:23,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1529 Valid, 2285 Invalid, 2771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 2345 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 17:05:23,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2022-07-22 17:05:23,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 566. [2022-07-22 17:05:23,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 446 states have (on average 1.6053811659192825) internal successors, (716), 467 states have internal predecessors, (716), 95 states have call successors, (95), 23 states have call predecessors, (95), 24 states have return successors, (92), 88 states have call predecessors, (92), 90 states have call successors, (92) [2022-07-22 17:05:23,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 903 transitions. [2022-07-22 17:05:23,880 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 903 transitions. Word has length 114 [2022-07-22 17:05:23,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:05:23,880 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 903 transitions. [2022-07-22 17:05:23,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:05:23,881 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 903 transitions. [2022-07-22 17:05:23,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 17:05:23,882 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:05:23,883 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:05:23,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 17:05:23,883 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:05:23,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:05:23,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1016705599, now seen corresponding path program 1 times [2022-07-22 17:05:23,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:05:23,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123833561] [2022-07-22 17:05:23,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:05:23,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:05:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:23,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:05:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:23,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:23,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:05:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:24,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 17:05:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:24,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:24,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:24,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:24,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:05:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:24,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:05:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:24,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:24,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:24,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:05:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:24,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 17:05:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:24,180 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:05:24,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:05:24,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123833561] [2022-07-22 17:05:24,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123833561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:05:24,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:05:24,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:05:24,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807448179] [2022-07-22 17:05:24,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:05:24,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:05:24,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:05:24,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:05:24,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:05:24,182 INFO L87 Difference]: Start difference. First operand 566 states and 903 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:05:27,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:05:27,721 INFO L93 Difference]: Finished difference Result 1390 states and 2277 transitions. [2022-07-22 17:05:27,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 17:05:27,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-07-22 17:05:27,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:05:27,726 INFO L225 Difference]: With dead ends: 1390 [2022-07-22 17:05:27,726 INFO L226 Difference]: Without dead ends: 822 [2022-07-22 17:05:27,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:05:27,728 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 944 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 2551 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 2331 SdHoareTripleChecker+Invalid, 2819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 2551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:05:27,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 2331 Invalid, 2819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 2551 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-22 17:05:27,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-07-22 17:05:27,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 547. [2022-07-22 17:05:27,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 430 states have (on average 1.613953488372093) internal successors, (694), 449 states have internal predecessors, (694), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-22 17:05:27,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 877 transitions. [2022-07-22 17:05:27,793 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 877 transitions. Word has length 114 [2022-07-22 17:05:27,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:05:27,794 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 877 transitions. [2022-07-22 17:05:27,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:05:27,794 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 877 transitions. [2022-07-22 17:05:27,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-22 17:05:27,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:05:27,796 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:05:27,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 17:05:27,796 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:05:27,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:05:27,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1398579404, now seen corresponding path program 1 times [2022-07-22 17:05:27,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:05:27,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875889149] [2022-07-22 17:05:27,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:05:27,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:05:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:27,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:05:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:27,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:27,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:05:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:27,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 17:05:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:28,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:28,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:28,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:28,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:05:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:28,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:05:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:28,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:28,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:28,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:05:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:28,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 17:05:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:28,044 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:05:28,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:05:28,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875889149] [2022-07-22 17:05:28,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875889149] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:05:28,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:05:28,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:05:28,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498558872] [2022-07-22 17:05:28,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:05:28,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:05:28,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:05:28,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:05:28,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:05:28,046 INFO L87 Difference]: Start difference. First operand 547 states and 877 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:05:31,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:05:31,200 INFO L93 Difference]: Finished difference Result 1325 states and 2192 transitions. [2022-07-22 17:05:31,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 17:05:31,201 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2022-07-22 17:05:31,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:05:31,204 INFO L225 Difference]: With dead ends: 1325 [2022-07-22 17:05:31,204 INFO L226 Difference]: Without dead ends: 843 [2022-07-22 17:05:31,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:05:31,206 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 1421 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 2335 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 2763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 2335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:05:31,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 2257 Invalid, 2763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 2335 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-22 17:05:31,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-07-22 17:05:31,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 552. [2022-07-22 17:05:31,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 435 states have (on average 1.606896551724138) internal successors, (699), 454 states have internal predecessors, (699), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-22 17:05:31,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 882 transitions. [2022-07-22 17:05:31,269 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 882 transitions. Word has length 115 [2022-07-22 17:05:31,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:05:31,270 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 882 transitions. [2022-07-22 17:05:31,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:05:31,270 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 882 transitions. [2022-07-22 17:05:31,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-22 17:05:31,272 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:05:31,272 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:05:31,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 17:05:31,272 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:05:31,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:05:31,273 INFO L85 PathProgramCache]: Analyzing trace with hash 744382804, now seen corresponding path program 1 times [2022-07-22 17:05:31,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:05:31,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918897122] [2022-07-22 17:05:31,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:05:31,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:05:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:31,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:05:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:31,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:31,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:05:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:31,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:05:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:31,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:31,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:31,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:31,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:05:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:31,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:05:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:31,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:31,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:31,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:05:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:31,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 17:05:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:31,543 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:05:31,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:05:31,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918897122] [2022-07-22 17:05:31,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918897122] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:05:31,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:05:31,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:05:31,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572314612] [2022-07-22 17:05:31,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:05:31,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:05:31,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:05:31,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:05:31,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:05:31,545 INFO L87 Difference]: Start difference. First operand 552 states and 882 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:05:34,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:05:34,409 INFO L93 Difference]: Finished difference Result 1323 states and 2187 transitions. [2022-07-22 17:05:34,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:05:34,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 116 [2022-07-22 17:05:34,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:05:34,412 INFO L225 Difference]: With dead ends: 1323 [2022-07-22 17:05:34,412 INFO L226 Difference]: Without dead ends: 820 [2022-07-22 17:05:34,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:05:34,415 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 1802 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 2216 SdHoareTripleChecker+Invalid, 2823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:05:34,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 2216 Invalid, 2823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 17:05:34,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2022-07-22 17:05:34,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 552. [2022-07-22 17:05:34,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 435 states have (on average 1.5977011494252873) internal successors, (695), 454 states have internal predecessors, (695), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-22 17:05:34,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 878 transitions. [2022-07-22 17:05:34,481 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 878 transitions. Word has length 116 [2022-07-22 17:05:34,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:05:34,482 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 878 transitions. [2022-07-22 17:05:34,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:05:34,482 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 878 transitions. [2022-07-22 17:05:34,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-22 17:05:34,484 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:05:34,484 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:05:34,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 17:05:34,484 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:05:34,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:05:34,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1592009706, now seen corresponding path program 1 times [2022-07-22 17:05:34,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:05:34,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591874370] [2022-07-22 17:05:34,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:05:34,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:05:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:34,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:05:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:34,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:34,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:05:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:34,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:05:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:34,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:34,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:34,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:34,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:05:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:34,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:05:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:34,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:34,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:34,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:05:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:34,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 17:05:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:34,890 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:05:34,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:05:34,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591874370] [2022-07-22 17:05:34,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591874370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:05:34,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:05:34,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-22 17:05:34,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845366903] [2022-07-22 17:05:34,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:05:34,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 17:05:34,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:05:34,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 17:05:34,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-07-22 17:05:34,892 INFO L87 Difference]: Start difference. First operand 552 states and 878 transitions. Second operand has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-22 17:05:43,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:05:43,501 INFO L93 Difference]: Finished difference Result 1566 states and 2718 transitions. [2022-07-22 17:05:43,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 17:05:43,501 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 116 [2022-07-22 17:05:43,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:05:43,506 INFO L225 Difference]: With dead ends: 1566 [2022-07-22 17:05:43,506 INFO L226 Difference]: Without dead ends: 1092 [2022-07-22 17:05:43,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2022-07-22 17:05:43,508 INFO L413 NwaCegarLoop]: 978 mSDtfsCounter, 3574 mSDsluCounter, 3320 mSDsCounter, 0 mSdLazyCounter, 9880 mSolverCounterSat, 1820 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3574 SdHoareTripleChecker+Valid, 4298 SdHoareTripleChecker+Invalid, 11700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1820 IncrementalHoareTripleChecker+Valid, 9880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:05:43,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3574 Valid, 4298 Invalid, 11700 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1820 Valid, 9880 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-07-22 17:05:43,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2022-07-22 17:05:43,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 561. [2022-07-22 17:05:43,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 442 states have (on average 1.588235294117647) internal successors, (702), 460 states have internal predecessors, (702), 94 states have call successors, (94), 23 states have call predecessors, (94), 24 states have return successors, (108), 90 states have call predecessors, (108), 89 states have call successors, (108) [2022-07-22 17:05:43,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 904 transitions. [2022-07-22 17:05:43,659 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 904 transitions. Word has length 116 [2022-07-22 17:05:43,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:05:43,659 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 904 transitions. [2022-07-22 17:05:43,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-22 17:05:43,660 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 904 transitions. [2022-07-22 17:05:43,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-22 17:05:43,662 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:05:43,662 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:05:43,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 17:05:43,662 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:05:43,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:05:43,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1887013128, now seen corresponding path program 1 times [2022-07-22 17:05:43,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:05:43,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741129294] [2022-07-22 17:05:43,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:05:43,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:05:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:43,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:05:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:43,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:43,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:05:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:43,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:05:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:43,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:43,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:43,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:43,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:05:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:43,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 17:05:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:43,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:44,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:44,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 17:05:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:44,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 17:05:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:44,076 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 17:05:44,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:05:44,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741129294] [2022-07-22 17:05:44,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741129294] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:05:44,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582487534] [2022-07-22 17:05:44,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:05:44,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:05:44,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:05:44,103 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 17:05:44,104 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 17:05:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:44,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 1437 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 17:05:44,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:05:44,476 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 17:05:44,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:05:44,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582487534] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:05:44,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:05:44,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2022-07-22 17:05:44,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571377851] [2022-07-22 17:05:44,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:05:44,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:05:44,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:05:44,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:05:44,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-07-22 17:05:44,478 INFO L87 Difference]: Start difference. First operand 561 states and 904 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:05:44,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:05:44,842 INFO L93 Difference]: Finished difference Result 1054 states and 1764 transitions. [2022-07-22 17:05:44,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:05:44,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2022-07-22 17:05:44,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:05:44,845 INFO L225 Difference]: With dead ends: 1054 [2022-07-22 17:05:44,845 INFO L226 Difference]: Without dead ends: 571 [2022-07-22 17:05:44,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:05:44,847 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 824 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:05:44,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 2171 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 17:05:44,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-07-22 17:05:44,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 569. [2022-07-22 17:05:44,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 449 states have (on average 1.5902004454342984) internal successors, (714), 467 states have internal predecessors, (714), 94 states have call successors, (94), 24 states have call predecessors, (94), 25 states have return successors, (103), 90 states have call predecessors, (103), 89 states have call successors, (103) [2022-07-22 17:05:44,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 911 transitions. [2022-07-22 17:05:44,923 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 911 transitions. Word has length 117 [2022-07-22 17:05:44,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:05:44,924 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 911 transitions. [2022-07-22 17:05:44,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:05:44,924 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 911 transitions. [2022-07-22 17:05:44,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-22 17:05:44,926 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:05:44,926 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:05:44,960 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 17:05:45,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:05:45,145 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:05:45,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:05:45,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1198584433, now seen corresponding path program 1 times [2022-07-22 17:05:45,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:05:45,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250762483] [2022-07-22 17:05:45,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:05:45,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:05:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:45,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:05:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:45,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:45,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:05:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:45,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:05:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:45,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:45,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:45,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:45,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:05:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:45,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:05:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:45,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:45,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:45,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 17:05:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:45,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:05:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:45,500 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 17:05:45,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:05:45,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250762483] [2022-07-22 17:05:45,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250762483] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:05:45,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026616147] [2022-07-22 17:05:45,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:05:45,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:05:45,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:05:45,516 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:05:45,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 17:05:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:45,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 1441 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 17:05:45,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:05:45,851 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 17:05:45,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:05:45,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026616147] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:05:45,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:05:45,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2022-07-22 17:05:45,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135783002] [2022-07-22 17:05:45,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:05:45,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:05:45,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:05:45,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:05:45,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:05:45,855 INFO L87 Difference]: Start difference. First operand 569 states and 911 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:05:46,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:05:46,222 INFO L93 Difference]: Finished difference Result 1070 states and 1762 transitions. [2022-07-22 17:05:46,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:05:46,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2022-07-22 17:05:46,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:05:46,227 INFO L225 Difference]: With dead ends: 1070 [2022-07-22 17:05:46,227 INFO L226 Difference]: Without dead ends: 579 [2022-07-22 17:05:46,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-07-22 17:05:46,229 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 811 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:05:46,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 2171 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 17:05:46,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-07-22 17:05:46,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2022-07-22 17:05:46,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 457 states have (on average 1.5908096280087527) internal successors, (727), 476 states have internal predecessors, (727), 94 states have call successors, (94), 25 states have call predecessors, (94), 27 states have return successors, (104), 90 states have call predecessors, (104), 89 states have call successors, (104) [2022-07-22 17:05:46,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 925 transitions. [2022-07-22 17:05:46,313 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 925 transitions. Word has length 122 [2022-07-22 17:05:46,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:05:46,314 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 925 transitions. [2022-07-22 17:05:46,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:05:46,314 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 925 transitions. [2022-07-22 17:05:46,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 17:05:46,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:05:46,316 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:05:46,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 17:05:46,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-07-22 17:05:46,530 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:05:46,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:05:46,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1804262813, now seen corresponding path program 1 times [2022-07-22 17:05:46,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:05:46,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961981186] [2022-07-22 17:05:46,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:05:46,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:05:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:46,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:05:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:46,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:46,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:05:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:46,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:05:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:46,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:46,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:46,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:46,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 17:05:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:46,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:05:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:46,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:46,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:46,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 17:05:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:46,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:05:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:46,875 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 17:05:46,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:05:46,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961981186] [2022-07-22 17:05:46,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961981186] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:05:46,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468129089] [2022-07-22 17:05:46,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:05:46,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:05:46,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:05:46,892 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:05:46,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 17:05:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:47,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 17:05:47,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:05:47,202 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 17:05:47,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:05:47,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468129089] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:05:47,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:05:47,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2022-07-22 17:05:47,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580698582] [2022-07-22 17:05:47,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:05:47,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:05:47,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:05:47,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:05:47,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:05:47,205 INFO L87 Difference]: Start difference. First operand 579 states and 925 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:05:47,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:05:47,606 INFO L93 Difference]: Finished difference Result 1090 states and 1787 transitions. [2022-07-22 17:05:47,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:05:47,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2022-07-22 17:05:47,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:05:47,622 INFO L225 Difference]: With dead ends: 1090 [2022-07-22 17:05:47,622 INFO L226 Difference]: Without dead ends: 589 [2022-07-22 17:05:47,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-07-22 17:05:47,625 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 820 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:05:47,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 2171 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 17:05:47,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-07-22 17:05:47,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2022-07-22 17:05:47,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 465 states have (on average 1.5913978494623655) internal successors, (740), 485 states have internal predecessors, (740), 94 states have call successors, (94), 26 states have call predecessors, (94), 29 states have return successors, (105), 90 states have call predecessors, (105), 89 states have call successors, (105) [2022-07-22 17:05:47,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 939 transitions. [2022-07-22 17:05:47,705 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 939 transitions. Word has length 123 [2022-07-22 17:05:47,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:05:47,706 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 939 transitions. [2022-07-22 17:05:47,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:05:47,706 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 939 transitions. [2022-07-22 17:05:47,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-22 17:05:47,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:05:47,708 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:05:47,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 17:05:47,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:05:47,921 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:05:47,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:05:47,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1252982550, now seen corresponding path program 1 times [2022-07-22 17:05:47,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:05:47,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485596725] [2022-07-22 17:05:47,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:05:47,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:05:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:48,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:05:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:48,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:48,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:05:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:48,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:05:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:48,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:48,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:48,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:48,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:05:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:48,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 17:05:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:48,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:48,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:05:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:48,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 17:05:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:48,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:05:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:05:48,311 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 17:05:48,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:05:48,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485596725] [2022-07-22 17:05:48,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485596725] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:05:48,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:05:48,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-22 17:05:48,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875584916] [2022-07-22 17:05:48,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:05:48,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 17:05:48,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:05:48,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 17:05:48,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:05:48,312 INFO L87 Difference]: Start difference. First operand 589 states and 939 transitions. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-22 17:06:02,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:06:02,013 INFO L93 Difference]: Finished difference Result 2568 states and 4521 transitions. [2022-07-22 17:06:02,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-22 17:06:02,015 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) Word has length 124 [2022-07-22 17:06:02,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:06:02,024 INFO L225 Difference]: With dead ends: 2568 [2022-07-22 17:06:02,024 INFO L226 Difference]: Without dead ends: 2057 [2022-07-22 17:06:02,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=418, Invalid=1838, Unknown=0, NotChecked=0, Total=2256 [2022-07-22 17:06:02,028 INFO L413 NwaCegarLoop]: 1939 mSDtfsCounter, 6645 mSDsluCounter, 7304 mSDsCounter, 0 mSdLazyCounter, 18764 mSolverCounterSat, 3236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6651 SdHoareTripleChecker+Valid, 9243 SdHoareTripleChecker+Invalid, 22000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3236 IncrementalHoareTripleChecker+Valid, 18764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:06:02,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6651 Valid, 9243 Invalid, 22000 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3236 Valid, 18764 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2022-07-22 17:06:02,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2022-07-22 17:06:02,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 1203. [2022-07-22 17:06:02,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 923 states have (on average 1.61863488624052) internal successors, (1494), 968 states have internal predecessors, (1494), 219 states have call successors, (219), 48 states have call predecessors, (219), 60 states have return successors, (267), 217 states have call predecessors, (267), 214 states have call successors, (267) [2022-07-22 17:06:02,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1980 transitions. [2022-07-22 17:06:02,227 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1980 transitions. Word has length 124 [2022-07-22 17:06:02,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:06:02,228 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 1980 transitions. [2022-07-22 17:06:02,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-22 17:06:02,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1980 transitions. [2022-07-22 17:06:02,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-22 17:06:02,231 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:06:02,231 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:06:02,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 17:06:02,231 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:06:02,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:06:02,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1856892251, now seen corresponding path program 1 times [2022-07-22 17:06:02,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:06:02,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385825205] [2022-07-22 17:06:02,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:06:02,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:06:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:02,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:06:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:02,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:02,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:06:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:02,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:06:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:02,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:02,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:02,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:02,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:06:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:02,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 17:06:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:02,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:02,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:02,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 17:06:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:02,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:06:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:02,462 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 17:06:02,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:06:02,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385825205] [2022-07-22 17:06:02,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385825205] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:06:02,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:06:02,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:06:02,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527129076] [2022-07-22 17:06:02,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:06:02,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:06:02,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:06:02,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:06:02,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:06:02,464 INFO L87 Difference]: Start difference. First operand 1203 states and 1980 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:06:06,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:06:06,166 INFO L93 Difference]: Finished difference Result 2856 states and 4884 transitions. [2022-07-22 17:06:06,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 17:06:06,167 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 124 [2022-07-22 17:06:06,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:06:06,175 INFO L225 Difference]: With dead ends: 2856 [2022-07-22 17:06:06,175 INFO L226 Difference]: Without dead ends: 1766 [2022-07-22 17:06:06,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:06:06,179 INFO L413 NwaCegarLoop]: 937 mSDtfsCounter, 961 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 2489 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 2413 SdHoareTripleChecker+Invalid, 2750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 2489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:06:06,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 2413 Invalid, 2750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 2489 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-22 17:06:06,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2022-07-22 17:06:06,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1209. [2022-07-22 17:06:06,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 929 states have (on average 1.6146393972012918) internal successors, (1500), 974 states have internal predecessors, (1500), 219 states have call successors, (219), 48 states have call predecessors, (219), 60 states have return successors, (267), 217 states have call predecessors, (267), 214 states have call successors, (267) [2022-07-22 17:06:06,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1986 transitions. [2022-07-22 17:06:06,412 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1986 transitions. Word has length 124 [2022-07-22 17:06:06,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:06:06,412 INFO L495 AbstractCegarLoop]: Abstraction has 1209 states and 1986 transitions. [2022-07-22 17:06:06,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:06:06,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1986 transitions. [2022-07-22 17:06:06,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-22 17:06:06,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:06:06,416 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:06:06,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 17:06:06,416 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:06:06,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:06:06,417 INFO L85 PathProgramCache]: Analyzing trace with hash 2080051492, now seen corresponding path program 1 times [2022-07-22 17:06:06,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:06:06,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028482069] [2022-07-22 17:06:06,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:06:06,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:06:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:06,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:06:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:06,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:06,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:06:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:06,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:06:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:06,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:06,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:06,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:06,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:06:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:06,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:06,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:06:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:06,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:06,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:06,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:06:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:06,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:06:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:06,752 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 17:06:06,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:06:06,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028482069] [2022-07-22 17:06:06,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028482069] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:06:06,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:06:06,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 17:06:06,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698559751] [2022-07-22 17:06:06,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:06:06,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 17:06:06,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:06:06,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 17:06:06,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:06:06,755 INFO L87 Difference]: Start difference. First operand 1209 states and 1986 transitions. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-22 17:06:12,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:06:12,783 INFO L93 Difference]: Finished difference Result 3374 states and 5932 transitions. [2022-07-22 17:06:12,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 17:06:12,784 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 130 [2022-07-22 17:06:12,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:06:12,800 INFO L225 Difference]: With dead ends: 3374 [2022-07-22 17:06:12,800 INFO L226 Difference]: Without dead ends: 2258 [2022-07-22 17:06:12,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=181, Invalid=419, Unknown=0, NotChecked=0, Total=600 [2022-07-22 17:06:12,804 INFO L413 NwaCegarLoop]: 1095 mSDtfsCounter, 3024 mSDsluCounter, 2751 mSDsCounter, 0 mSdLazyCounter, 4348 mSolverCounterSat, 1514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3024 SdHoareTripleChecker+Valid, 3846 SdHoareTripleChecker+Invalid, 5862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1514 IncrementalHoareTripleChecker+Valid, 4348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:06:12,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3024 Valid, 3846 Invalid, 5862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1514 Valid, 4348 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-07-22 17:06:12,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2022-07-22 17:06:13,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 1219. [2022-07-22 17:06:13,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 937 states have (on average 1.6093916755602988) internal successors, (1508), 982 states have internal predecessors, (1508), 219 states have call successors, (219), 48 states have call predecessors, (219), 62 states have return successors, (270), 219 states have call predecessors, (270), 214 states have call successors, (270) [2022-07-22 17:06:13,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1997 transitions. [2022-07-22 17:06:13,098 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1997 transitions. Word has length 130 [2022-07-22 17:06:13,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:06:13,099 INFO L495 AbstractCegarLoop]: Abstraction has 1219 states and 1997 transitions. [2022-07-22 17:06:13,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-22 17:06:13,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1997 transitions. [2022-07-22 17:06:13,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-22 17:06:13,102 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:06:13,102 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:06:13,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 17:06:13,102 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:06:13,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:06:13,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1755606991, now seen corresponding path program 1 times [2022-07-22 17:06:13,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:06:13,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108763002] [2022-07-22 17:06:13,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:06:13,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:06:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:13,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:06:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:13,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:13,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:06:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:13,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:06:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:13,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:13,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:13,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:13,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:06:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:13,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 17:06:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:13,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:13,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:13,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 17:06:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:13,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:06:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:13,421 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 17:06:13,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:06:13,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108763002] [2022-07-22 17:06:13,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108763002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:06:13,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:06:13,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:06:13,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401585010] [2022-07-22 17:06:13,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:06:13,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:06:13,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:06:13,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:06:13,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:06:13,424 INFO L87 Difference]: Start difference. First operand 1219 states and 1997 transitions. Second operand has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:06:17,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:06:17,361 INFO L93 Difference]: Finished difference Result 1994 states and 3331 transitions. [2022-07-22 17:06:17,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:06:17,362 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 130 [2022-07-22 17:06:17,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:06:17,365 INFO L225 Difference]: With dead ends: 1994 [2022-07-22 17:06:17,366 INFO L226 Difference]: Without dead ends: 839 [2022-07-22 17:06:17,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-22 17:06:17,369 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 1367 mSDsluCounter, 2760 mSDsCounter, 0 mSdLazyCounter, 4607 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1443 SdHoareTripleChecker+Valid, 3671 SdHoareTripleChecker+Invalid, 5016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 4607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:06:17,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1443 Valid, 3671 Invalid, 5016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 4607 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 17:06:17,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2022-07-22 17:06:17,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 574. [2022-07-22 17:06:17,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 453 states have (on average 1.596026490066225) internal successors, (723), 475 states have internal predecessors, (723), 91 states have call successors, (91), 26 states have call predecessors, (91), 29 states have return successors, (102), 85 states have call predecessors, (102), 86 states have call successors, (102) [2022-07-22 17:06:17,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 916 transitions. [2022-07-22 17:06:17,488 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 916 transitions. Word has length 130 [2022-07-22 17:06:17,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:06:17,488 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 916 transitions. [2022-07-22 17:06:17,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:06:17,488 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 916 transitions. [2022-07-22 17:06:17,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-22 17:06:17,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:06:17,490 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:06:17,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 17:06:17,490 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:06:17,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:06:17,490 INFO L85 PathProgramCache]: Analyzing trace with hash -9124150, now seen corresponding path program 1 times [2022-07-22 17:06:17,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:06:17,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775694981] [2022-07-22 17:06:17,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:06:17,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:06:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:17,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:06:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:17,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:17,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:06:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:17,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:06:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:17,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:17,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:17,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:17,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:06:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:17,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:17,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:06:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:17,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:17,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:17,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 17:06:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:17,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:06:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:17,789 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 17:06:17,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:06:17,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775694981] [2022-07-22 17:06:17,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775694981] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:06:17,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:06:17,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:06:17,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560712247] [2022-07-22 17:06:17,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:06:17,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:06:17,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:06:17,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:06:17,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:06:17,792 INFO L87 Difference]: Start difference. First operand 574 states and 916 transitions. Second operand has 10 states, 10 states have (on average 9.2) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 17:06:25,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:06:25,258 INFO L93 Difference]: Finished difference Result 2101 states and 3603 transitions. [2022-07-22 17:06:25,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-22 17:06:25,258 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 133 [2022-07-22 17:06:25,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:06:25,266 INFO L225 Difference]: With dead ends: 2101 [2022-07-22 17:06:25,266 INFO L226 Difference]: Without dead ends: 1599 [2022-07-22 17:06:25,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=192, Invalid=620, Unknown=0, NotChecked=0, Total=812 [2022-07-22 17:06:25,269 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 4115 mSDsluCounter, 2887 mSDsCounter, 0 mSdLazyCounter, 5775 mSolverCounterSat, 1490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4187 SdHoareTripleChecker+Valid, 3869 SdHoareTripleChecker+Invalid, 7265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1490 IncrementalHoareTripleChecker+Valid, 5775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:06:25,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4187 Valid, 3869 Invalid, 7265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1490 Valid, 5775 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-22 17:06:25,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2022-07-22 17:06:25,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1123. [2022-07-22 17:06:25,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 884 states have (on average 1.6289592760180995) internal successors, (1440), 922 states have internal predecessors, (1440), 180 states have call successors, (180), 46 states have call predecessors, (180), 58 states have return successors, (220), 178 states have call predecessors, (220), 175 states have call successors, (220) [2022-07-22 17:06:25,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1840 transitions. [2022-07-22 17:06:25,504 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1840 transitions. Word has length 133 [2022-07-22 17:06:25,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:06:25,505 INFO L495 AbstractCegarLoop]: Abstraction has 1123 states and 1840 transitions. [2022-07-22 17:06:25,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 17:06:25,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1840 transitions. [2022-07-22 17:06:25,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-22 17:06:25,506 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:06:25,507 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:06:25,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 17:06:25,507 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:06:25,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:06:25,507 INFO L85 PathProgramCache]: Analyzing trace with hash 447050291, now seen corresponding path program 1 times [2022-07-22 17:06:25,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:06:25,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846186832] [2022-07-22 17:06:25,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:06:25,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:06:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:25,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:06:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:25,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:25,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:06:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:25,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:06:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:25,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:25,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:25,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:25,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:06:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:25,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:25,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:06:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:25,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:25,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:25,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 17:06:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:25,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:06:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:25,803 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 17:06:25,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:06:25,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846186832] [2022-07-22 17:06:25,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846186832] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:06:25,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865140072] [2022-07-22 17:06:25,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:06:25,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:06:25,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:06:25,820 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:06:25,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 17:06:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:26,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 1483 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 17:06:26,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:06:26,039 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 17:06:26,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:06:26,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865140072] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:06:26,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:06:26,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 10 [2022-07-22 17:06:26,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761692469] [2022-07-22 17:06:26,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:06:26,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:06:26,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:06:26,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:06:26,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:06:26,042 INFO L87 Difference]: Start difference. First operand 1123 states and 1840 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:06:26,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:06:26,506 INFO L93 Difference]: Finished difference Result 3107 states and 5175 transitions. [2022-07-22 17:06:26,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:06:26,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 137 [2022-07-22 17:06:26,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:06:26,514 INFO L225 Difference]: With dead ends: 3107 [2022-07-22 17:06:26,515 INFO L226 Difference]: Without dead ends: 2056 [2022-07-22 17:06:26,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 163 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:06:26,520 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 771 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:06:26,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 1696 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:06:26,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2022-07-22 17:06:26,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 2040. [2022-07-22 17:06:26,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2040 states, 1599 states have (on average 1.6222639149468419) internal successors, (2594), 1670 states have internal predecessors, (2594), 330 states have call successors, (330), 87 states have call predecessors, (330), 110 states have return successors, (411), 330 states have call predecessors, (411), 325 states have call successors, (411) [2022-07-22 17:06:26,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 3335 transitions. [2022-07-22 17:06:26,936 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 3335 transitions. Word has length 137 [2022-07-22 17:06:26,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:06:26,937 INFO L495 AbstractCegarLoop]: Abstraction has 2040 states and 3335 transitions. [2022-07-22 17:06:26,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 17:06:26,937 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 3335 transitions. [2022-07-22 17:06:26,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-22 17:06:26,939 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:06:26,939 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:06:26,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 17:06:27,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-22 17:06:27,158 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:06:27,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:06:27,158 INFO L85 PathProgramCache]: Analyzing trace with hash -2056224795, now seen corresponding path program 1 times [2022-07-22 17:06:27,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:06:27,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80883200] [2022-07-22 17:06:27,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:06:27,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:06:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:27,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:06:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:27,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:27,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:06:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:27,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:06:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:27,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:27,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:27,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:27,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:06:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:27,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:27,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:06:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:27,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:27,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:27,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:06:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:27,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 17:06:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:27,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:06:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:27,430 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 17:06:27,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:06:27,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80883200] [2022-07-22 17:06:27,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80883200] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:06:27,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:06:27,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:06:27,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838981383] [2022-07-22 17:06:27,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:06:27,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:06:27,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:06:27,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:06:27,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:06:27,432 INFO L87 Difference]: Start difference. First operand 2040 states and 3335 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:06:37,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:06:37,319 INFO L93 Difference]: Finished difference Result 5293 states and 9000 transitions. [2022-07-22 17:06:37,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 17:06:37,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 142 [2022-07-22 17:06:37,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:06:37,331 INFO L225 Difference]: With dead ends: 5293 [2022-07-22 17:06:37,332 INFO L226 Difference]: Without dead ends: 3649 [2022-07-22 17:06:37,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:06:37,337 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 3582 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 3521 mSolverCounterSat, 1330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3654 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 4851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1330 IncrementalHoareTripleChecker+Valid, 3521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:06:37,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3654 Valid, 1936 Invalid, 4851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1330 Valid, 3521 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-07-22 17:06:37,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3649 states. [2022-07-22 17:06:37,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3649 to 2780. [2022-07-22 17:06:37,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2780 states, 2181 states have (on average 1.6047684548372305) internal successors, (3500), 2270 states have internal predecessors, (3500), 436 states have call successors, (436), 133 states have call predecessors, (436), 162 states have return successors, (563), 436 states have call predecessors, (563), 431 states have call successors, (563) [2022-07-22 17:06:37,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 4499 transitions. [2022-07-22 17:06:37,903 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 4499 transitions. Word has length 142 [2022-07-22 17:06:37,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:06:37,904 INFO L495 AbstractCegarLoop]: Abstraction has 2780 states and 4499 transitions. [2022-07-22 17:06:37,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 17:06:37,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 4499 transitions. [2022-07-22 17:06:37,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 17:06:37,906 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:06:37,906 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:06:37,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 17:06:37,907 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:06:37,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:06:37,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1861221319, now seen corresponding path program 1 times [2022-07-22 17:06:37,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:06:37,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427202411] [2022-07-22 17:06:37,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:06:37,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:06:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:38,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:06:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:38,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:38,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:06:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:38,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:06:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:38,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:38,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:38,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:38,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:06:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:38,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:38,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:06:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:38,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:38,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:38,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:06:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:38,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:06:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:38,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 17:06:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:38,211 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 17:06:38,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:06:38,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427202411] [2022-07-22 17:06:38,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427202411] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:06:38,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:06:38,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:06:38,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239509743] [2022-07-22 17:06:38,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:06:38,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:06:38,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:06:38,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:06:38,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:06:38,213 INFO L87 Difference]: Start difference. First operand 2780 states and 4499 transitions. Second operand has 10 states, 9 states have (on average 11.333333333333334) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-22 17:06:43,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:06:43,322 INFO L93 Difference]: Finished difference Result 6274 states and 10618 transitions. [2022-07-22 17:06:43,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:06:43,323 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.333333333333334) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 145 [2022-07-22 17:06:43,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:06:43,345 INFO L225 Difference]: With dead ends: 6274 [2022-07-22 17:06:43,345 INFO L226 Difference]: Without dead ends: 3596 [2022-07-22 17:06:43,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:06:43,382 INFO L413 NwaCegarLoop]: 893 mSDtfsCounter, 2541 mSDsluCounter, 2697 mSDsCounter, 0 mSdLazyCounter, 3972 mSolverCounterSat, 665 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2605 SdHoareTripleChecker+Valid, 3590 SdHoareTripleChecker+Invalid, 4637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 665 IncrementalHoareTripleChecker+Valid, 3972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:06:43,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2605 Valid, 3590 Invalid, 4637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [665 Valid, 3972 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-22 17:06:43,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3596 states. [2022-07-22 17:06:44,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3596 to 2780. [2022-07-22 17:06:44,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2780 states, 2181 states have (on average 1.589179275561669) internal successors, (3466), 2270 states have internal predecessors, (3466), 436 states have call successors, (436), 133 states have call predecessors, (436), 162 states have return successors, (563), 436 states have call predecessors, (563), 431 states have call successors, (563) [2022-07-22 17:06:44,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 4465 transitions. [2022-07-22 17:06:44,032 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 4465 transitions. Word has length 145 [2022-07-22 17:06:44,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:06:44,032 INFO L495 AbstractCegarLoop]: Abstraction has 2780 states and 4465 transitions. [2022-07-22 17:06:44,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.333333333333334) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-22 17:06:44,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 4465 transitions. [2022-07-22 17:06:44,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-22 17:06:44,034 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:06:44,035 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:06:44,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-22 17:06:44,035 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:06:44,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:06:44,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1761678613, now seen corresponding path program 1 times [2022-07-22 17:06:44,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:06:44,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362158221] [2022-07-22 17:06:44,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:06:44,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:06:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:44,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:06:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:44,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:44,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:06:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:44,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:06:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:44,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:44,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:44,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:44,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:06:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:44,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:44,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:06:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:44,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:44,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:44,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:06:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:44,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 17:06:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:44,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:06:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:44,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:06:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:44,311 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 17:06:44,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:06:44,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362158221] [2022-07-22 17:06:44,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362158221] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:06:44,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:06:44,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:06:44,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328457062] [2022-07-22 17:06:44,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:06:44,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:06:44,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:06:44,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:06:44,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:06:44,313 INFO L87 Difference]: Start difference. First operand 2780 states and 4465 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 17:06:48,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:06:48,609 INFO L93 Difference]: Finished difference Result 6333 states and 10692 transitions. [2022-07-22 17:06:48,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:06:48,610 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 149 [2022-07-22 17:06:48,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:06:48,621 INFO L225 Difference]: With dead ends: 6333 [2022-07-22 17:06:48,621 INFO L226 Difference]: Without dead ends: 3624 [2022-07-22 17:06:48,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:06:48,627 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 1298 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 2397 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 2817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 2397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:06:48,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1375 Valid, 2192 Invalid, 2817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 2397 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 17:06:48,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2022-07-22 17:06:49,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 2808. [2022-07-22 17:06:49,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2808 states, 2202 states have (on average 1.5817438692098094) internal successors, (3483), 2291 states have internal predecessors, (3483), 436 states have call successors, (436), 140 states have call predecessors, (436), 169 states have return successors, (561), 436 states have call predecessors, (561), 431 states have call successors, (561) [2022-07-22 17:06:49,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2808 states to 2808 states and 4480 transitions. [2022-07-22 17:06:49,186 INFO L78 Accepts]: Start accepts. Automaton has 2808 states and 4480 transitions. Word has length 149 [2022-07-22 17:06:49,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:06:49,186 INFO L495 AbstractCegarLoop]: Abstraction has 2808 states and 4480 transitions. [2022-07-22 17:06:49,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 17:06:49,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2808 states and 4480 transitions. [2022-07-22 17:06:49,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-22 17:06:49,188 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:06:49,188 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:06:49,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-22 17:06:49,189 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:06:49,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:06:49,189 INFO L85 PathProgramCache]: Analyzing trace with hash -783319773, now seen corresponding path program 1 times [2022-07-22 17:06:49,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:06:49,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807245256] [2022-07-22 17:06:49,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:06:49,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:06:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:49,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:06:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:49,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:49,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:06:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:49,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:06:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:49,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:49,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:49,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:49,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:49,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:06:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:49,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:49,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:06:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:49,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:49,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:49,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:06:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:49,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 17:06:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:49,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:06:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:49,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 17:06:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:49,535 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-22 17:06:49,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:06:49,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807245256] [2022-07-22 17:06:49,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807245256] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:06:49,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:06:49,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 17:06:49,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626938343] [2022-07-22 17:06:49,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:06:49,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 17:06:49,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:06:49,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 17:06:49,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:06:49,537 INFO L87 Difference]: Start difference. First operand 2808 states and 4480 transitions. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 8 states have internal predecessors, (102), 5 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-22 17:06:58,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:06:58,299 INFO L93 Difference]: Finished difference Result 6614 states and 10983 transitions. [2022-07-22 17:06:58,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-22 17:06:58,299 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 8 states have internal predecessors, (102), 5 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 150 [2022-07-22 17:06:58,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:06:58,317 INFO L225 Difference]: With dead ends: 6614 [2022-07-22 17:06:58,317 INFO L226 Difference]: Without dead ends: 4196 [2022-07-22 17:06:58,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-07-22 17:06:58,324 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 4576 mSDsluCounter, 2809 mSDsCounter, 0 mSdLazyCounter, 6558 mSolverCounterSat, 1546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4639 SdHoareTripleChecker+Valid, 3693 SdHoareTripleChecker+Invalid, 8104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1546 IncrementalHoareTripleChecker+Valid, 6558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:06:58,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4639 Valid, 3693 Invalid, 8104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1546 Valid, 6558 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-07-22 17:06:58,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4196 states. [2022-07-22 17:06:59,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4196 to 3257. [2022-07-22 17:06:59,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3257 states, 2566 states have (on average 1.5565081839438815) internal successors, (3994), 2661 states have internal predecessors, (3994), 481 states have call successors, (481), 177 states have call predecessors, (481), 209 states have return successors, (638), 478 states have call predecessors, (638), 476 states have call successors, (638) [2022-07-22 17:06:59,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3257 states to 3257 states and 5113 transitions. [2022-07-22 17:06:59,032 INFO L78 Accepts]: Start accepts. Automaton has 3257 states and 5113 transitions. Word has length 150 [2022-07-22 17:06:59,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:06:59,032 INFO L495 AbstractCegarLoop]: Abstraction has 3257 states and 5113 transitions. [2022-07-22 17:06:59,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 8 states have internal predecessors, (102), 5 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-22 17:06:59,032 INFO L276 IsEmpty]: Start isEmpty. Operand 3257 states and 5113 transitions. [2022-07-22 17:06:59,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-22 17:06:59,034 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:06:59,034 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:06:59,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-22 17:06:59,035 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:06:59,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:06:59,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1466001622, now seen corresponding path program 1 times [2022-07-22 17:06:59,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:06:59,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916307062] [2022-07-22 17:06:59,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:06:59,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:06:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:59,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:06:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:59,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:59,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:06:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:59,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:06:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:59,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:59,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:59,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:59,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:06:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:59,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:59,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:06:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:59,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:59,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:06:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:59,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:06:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:59,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 17:06:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:59,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:06:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:59,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:06:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:59,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:06:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:59,465 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-22 17:06:59,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:06:59,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916307062] [2022-07-22 17:06:59,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916307062] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:06:59,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209582691] [2022-07-22 17:06:59,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:06:59,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:06:59,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:06:59,467 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:06:59,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 17:06:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:06:59,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 1539 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 17:06:59,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:06:59,896 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 17:06:59,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:06:59,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209582691] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:06:59,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:06:59,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 19 [2022-07-22 17:06:59,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680775046] [2022-07-22 17:06:59,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:06:59,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:06:59,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:06:59,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:06:59,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-07-22 17:06:59,897 INFO L87 Difference]: Start difference. First operand 3257 states and 5113 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-22 17:07:00,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:07:00,765 INFO L93 Difference]: Finished difference Result 3372 states and 5308 transitions. [2022-07-22 17:07:00,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:07:00,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 155 [2022-07-22 17:07:00,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:07:00,778 INFO L225 Difference]: With dead ends: 3372 [2022-07-22 17:07:00,779 INFO L226 Difference]: Without dead ends: 3357 [2022-07-22 17:07:00,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-07-22 17:07:00,781 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 781 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:07:00,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 1484 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 17:07:00,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2022-07-22 17:07:01,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 3266. [2022-07-22 17:07:01,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3266 states, 2575 states have (on average 1.5545631067961165) internal successors, (4003), 2670 states have internal predecessors, (4003), 481 states have call successors, (481), 177 states have call predecessors, (481), 209 states have return successors, (638), 478 states have call predecessors, (638), 476 states have call successors, (638) [2022-07-22 17:07:01,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3266 states to 3266 states and 5122 transitions. [2022-07-22 17:07:01,466 INFO L78 Accepts]: Start accepts. Automaton has 3266 states and 5122 transitions. Word has length 155 [2022-07-22 17:07:01,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:07:01,466 INFO L495 AbstractCegarLoop]: Abstraction has 3266 states and 5122 transitions. [2022-07-22 17:07:01,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-22 17:07:01,467 INFO L276 IsEmpty]: Start isEmpty. Operand 3266 states and 5122 transitions. [2022-07-22 17:07:01,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-22 17:07:01,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:07:01,469 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:07:01,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-22 17:07:01,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:07:01,686 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:07:01,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:07:01,687 INFO L85 PathProgramCache]: Analyzing trace with hash -2095115567, now seen corresponding path program 1 times [2022-07-22 17:07:01,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:07:01,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711474469] [2022-07-22 17:07:01,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:07:01,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:07:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:01,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:07:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:01,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:01,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:07:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:01,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:07:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:01,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:01,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:01,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:01,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:07:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:01,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:01,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:07:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:01,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:01,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:01,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:07:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:01,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 17:07:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:01,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:07:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:01,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:07:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:01,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:07:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:01,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 17:07:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:01,991 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 17:07:01,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:07:01,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711474469] [2022-07-22 17:07:01,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711474469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:07:01,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:07:01,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 17:07:01,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310346675] [2022-07-22 17:07:01,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:07:01,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 17:07:01,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:07:01,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 17:07:01,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:07:01,993 INFO L87 Difference]: Start difference. First operand 3266 states and 5122 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-22 17:07:06,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:07:06,014 INFO L93 Difference]: Finished difference Result 4138 states and 6867 transitions. [2022-07-22 17:07:06,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 17:07:06,014 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) Word has length 161 [2022-07-22 17:07:06,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:07:06,057 INFO L225 Difference]: With dead ends: 4138 [2022-07-22 17:07:06,057 INFO L226 Difference]: Without dead ends: 4123 [2022-07-22 17:07:06,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-07-22 17:07:06,075 INFO L413 NwaCegarLoop]: 901 mSDtfsCounter, 1770 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 2982 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1844 SdHoareTripleChecker+Valid, 2558 SdHoareTripleChecker+Invalid, 3571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 2982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:07:06,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1844 Valid, 2558 Invalid, 3571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 2982 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 17:07:06,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4123 states. [2022-07-22 17:07:06,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4123 to 3266. [2022-07-22 17:07:06,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3266 states, 2575 states have (on average 1.552621359223301) internal successors, (3998), 2670 states have internal predecessors, (3998), 481 states have call successors, (481), 177 states have call predecessors, (481), 209 states have return successors, (638), 478 states have call predecessors, (638), 476 states have call successors, (638) [2022-07-22 17:07:06,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3266 states to 3266 states and 5117 transitions. [2022-07-22 17:07:06,800 INFO L78 Accepts]: Start accepts. Automaton has 3266 states and 5117 transitions. Word has length 161 [2022-07-22 17:07:06,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:07:06,800 INFO L495 AbstractCegarLoop]: Abstraction has 3266 states and 5117 transitions. [2022-07-22 17:07:06,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-22 17:07:06,801 INFO L276 IsEmpty]: Start isEmpty. Operand 3266 states and 5117 transitions. [2022-07-22 17:07:06,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-22 17:07:06,802 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:07:06,802 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:07:06,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-22 17:07:06,803 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:07:06,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:07:06,803 INFO L85 PathProgramCache]: Analyzing trace with hash 477116086, now seen corresponding path program 1 times [2022-07-22 17:07:06,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:07:06,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585291785] [2022-07-22 17:07:06,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:07:06,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:07:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:06,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:07:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:06,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:06,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:07:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:07,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:07:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:07,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:07,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:07,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:07,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:07:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:07,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:07,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:07:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:07,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:07,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:07,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:07:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:07,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 17:07:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:07,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:07:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:07,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:07:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:07,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:07:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:07,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 17:07:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:07,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 17:07:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:07,171 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-22 17:07:07,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:07:07,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585291785] [2022-07-22 17:07:07,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585291785] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:07:07,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277821863] [2022-07-22 17:07:07,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:07:07,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:07:07,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:07:07,187 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:07:07,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 17:07:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:07,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 1592 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 17:07:07,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:07:07,463 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-22 17:07:07,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:07:07,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277821863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:07:07,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:07:07,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2022-07-22 17:07:07,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417951587] [2022-07-22 17:07:07,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:07:07,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:07:07,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:07:07,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:07:07,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:07:07,467 INFO L87 Difference]: Start difference. First operand 3266 states and 5117 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-22 17:07:08,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:07:08,436 INFO L93 Difference]: Finished difference Result 3429 states and 5376 transitions. [2022-07-22 17:07:08,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:07:08,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 172 [2022-07-22 17:07:08,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:07:08,451 INFO L225 Difference]: With dead ends: 3429 [2022-07-22 17:07:08,451 INFO L226 Difference]: Without dead ends: 3414 [2022-07-22 17:07:08,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2022-07-22 17:07:08,454 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 67 mSDsluCounter, 2563 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 3441 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:07:08,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 3441 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:07:08,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3414 states. [2022-07-22 17:07:09,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3414 to 3281. [2022-07-22 17:07:09,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3281 states, 2590 states have (on average 1.5494208494208495) internal successors, (4013), 2685 states have internal predecessors, (4013), 481 states have call successors, (481), 177 states have call predecessors, (481), 209 states have return successors, (638), 478 states have call predecessors, (638), 476 states have call successors, (638) [2022-07-22 17:07:09,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3281 states to 3281 states and 5132 transitions. [2022-07-22 17:07:09,396 INFO L78 Accepts]: Start accepts. Automaton has 3281 states and 5132 transitions. Word has length 172 [2022-07-22 17:07:09,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:07:09,396 INFO L495 AbstractCegarLoop]: Abstraction has 3281 states and 5132 transitions. [2022-07-22 17:07:09,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-22 17:07:09,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3281 states and 5132 transitions. [2022-07-22 17:07:09,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-22 17:07:09,400 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:07:09,401 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:07:09,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 17:07:09,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:07:09,607 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:07:09,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:07:09,612 INFO L85 PathProgramCache]: Analyzing trace with hash -263542900, now seen corresponding path program 1 times [2022-07-22 17:07:09,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:07:09,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411627383] [2022-07-22 17:07:09,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:07:09,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:07:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:09,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:07:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:09,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:09,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:07:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:09,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:07:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:09,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:09,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:09,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:09,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:07:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:09,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:09,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:07:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:09,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:09,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:09,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:07:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:09,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 17:07:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:09,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:07:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:09,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:07:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:09,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:07:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:09,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 17:07:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:09,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 17:07:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:09,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 17:07:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:09,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 17:07:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:09,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 17:07:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:09,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-22 17:07:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:10,001 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-07-22 17:07:10,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:07:10,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411627383] [2022-07-22 17:07:10,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411627383] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:07:10,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594004825] [2022-07-22 17:07:10,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:07:10,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:07:10,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:07:10,007 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:07:10,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 17:07:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:10,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 1697 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 17:07:10,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:07:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 100 proven. 6 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-22 17:07:10,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:07:10,854 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-22 17:07:10,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594004825] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:07:10,855 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:07:10,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 23 [2022-07-22 17:07:10,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185351852] [2022-07-22 17:07:10,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:07:10,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-22 17:07:10,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:07:10,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-22 17:07:10,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2022-07-22 17:07:10,857 INFO L87 Difference]: Start difference. First operand 3281 states and 5132 transitions. Second operand has 23 states, 23 states have (on average 10.434782608695652) internal successors, (240), 16 states have internal predecessors, (240), 8 states have call successors, (51), 8 states have call predecessors, (51), 12 states have return successors, (50), 12 states have call predecessors, (50), 8 states have call successors, (50) [2022-07-22 17:07:38,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:07:38,903 INFO L93 Difference]: Finished difference Result 17578 states and 29358 transitions. [2022-07-22 17:07:38,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-07-22 17:07:38,904 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.434782608695652) internal successors, (240), 16 states have internal predecessors, (240), 8 states have call successors, (51), 8 states have call predecessors, (51), 12 states have return successors, (50), 12 states have call predecessors, (50), 8 states have call successors, (50) Word has length 215 [2022-07-22 17:07:38,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:07:39,053 INFO L225 Difference]: With dead ends: 17578 [2022-07-22 17:07:39,053 INFO L226 Difference]: Without dead ends: 14379 [2022-07-22 17:07:39,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 479 SyntacticMatches, 4 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2823 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1252, Invalid=8060, Unknown=0, NotChecked=0, Total=9312 [2022-07-22 17:07:39,068 INFO L413 NwaCegarLoop]: 2516 mSDtfsCounter, 11434 mSDsluCounter, 12265 mSDsCounter, 0 mSdLazyCounter, 29068 mSolverCounterSat, 5642 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11445 SdHoareTripleChecker+Valid, 14781 SdHoareTripleChecker+Invalid, 34710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5642 IncrementalHoareTripleChecker+Valid, 29068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:07:39,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11445 Valid, 14781 Invalid, 34710 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5642 Valid, 29068 Invalid, 0 Unknown, 0 Unchecked, 17.9s Time] [2022-07-22 17:07:39,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14379 states. [2022-07-22 17:07:41,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14379 to 10744. [2022-07-22 17:07:41,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10744 states, 8318 states have (on average 1.5407549891800913) internal successors, (12816), 8640 states have internal predecessors, (12816), 1766 states have call successors, (1766), 508 states have call predecessors, (1766), 659 states have return successors, (2591), 1808 states have call predecessors, (2591), 1761 states have call successors, (2591) [2022-07-22 17:07:41,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10744 states to 10744 states and 17173 transitions. [2022-07-22 17:07:41,928 INFO L78 Accepts]: Start accepts. Automaton has 10744 states and 17173 transitions. Word has length 215 [2022-07-22 17:07:41,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:07:41,929 INFO L495 AbstractCegarLoop]: Abstraction has 10744 states and 17173 transitions. [2022-07-22 17:07:41,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.434782608695652) internal successors, (240), 16 states have internal predecessors, (240), 8 states have call successors, (51), 8 states have call predecessors, (51), 12 states have return successors, (50), 12 states have call predecessors, (50), 8 states have call successors, (50) [2022-07-22 17:07:41,929 INFO L276 IsEmpty]: Start isEmpty. Operand 10744 states and 17173 transitions. [2022-07-22 17:07:41,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-07-22 17:07:41,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:07:41,938 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:07:41,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-22 17:07:42,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:07:42,142 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:07:42,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:07:42,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1280539560, now seen corresponding path program 1 times [2022-07-22 17:07:42,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:07:42,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027309889] [2022-07-22 17:07:42,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:07:42,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:07:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:07:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:07:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:07:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:07:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 17:07:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:07:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 17:07:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:07:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 17:07:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 17:07:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 17:07:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 17:07:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 17:07:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 17:07:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 17:07:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:07:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:07:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:07:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 17:07:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:07:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:07:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:07:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:07:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,596 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-07-22 17:07:42,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:07:42,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027309889] [2022-07-22 17:07:42,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027309889] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:07:42,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160781839] [2022-07-22 17:07:42,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:07:42,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:07:42,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:07:42,598 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:07:42,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 17:07:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:42,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 2156 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:07:42,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:07:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-07-22 17:07:42,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:07:42,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160781839] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:07:42,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:07:42,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2022-07-22 17:07:42,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484081013] [2022-07-22 17:07:42,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:07:42,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:07:42,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:07:42,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:07:42,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:07:42,938 INFO L87 Difference]: Start difference. First operand 10744 states and 17173 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2022-07-22 17:07:48,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:07:48,605 INFO L93 Difference]: Finished difference Result 31934 states and 51604 transitions. [2022-07-22 17:07:48,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:07:48,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 288 [2022-07-22 17:07:48,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:07:48,681 INFO L225 Difference]: With dead ends: 31934 [2022-07-22 17:07:48,681 INFO L226 Difference]: Without dead ends: 21270 [2022-07-22 17:07:48,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:07:48,711 INFO L413 NwaCegarLoop]: 1003 mSDtfsCounter, 813 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:07:48,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 1761 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:07:48,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21270 states. [2022-07-22 17:07:54,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21270 to 21268. [2022-07-22 17:07:54,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21268 states, 16469 states have (on average 1.5413807760034004) internal successors, (25385), 17113 states have internal predecessors, (25385), 3485 states have call successors, (3485), 1010 states have call predecessors, (3485), 1313 states have return successors, (5464), 3570 states have call predecessors, (5464), 3480 states have call successors, (5464) [2022-07-22 17:07:54,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21268 states to 21268 states and 34334 transitions. [2022-07-22 17:07:54,230 INFO L78 Accepts]: Start accepts. Automaton has 21268 states and 34334 transitions. Word has length 288 [2022-07-22 17:07:54,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:07:54,231 INFO L495 AbstractCegarLoop]: Abstraction has 21268 states and 34334 transitions. [2022-07-22 17:07:54,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2022-07-22 17:07:54,232 INFO L276 IsEmpty]: Start isEmpty. Operand 21268 states and 34334 transitions. [2022-07-22 17:07:54,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-07-22 17:07:54,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:07:54,244 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:07:54,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 17:07:54,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-07-22 17:07:54,460 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:07:54,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:07:54,460 INFO L85 PathProgramCache]: Analyzing trace with hash 80230799, now seen corresponding path program 1 times [2022-07-22 17:07:54,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:07:54,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804803992] [2022-07-22 17:07:54,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:07:54,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:07:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:07:54,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:07:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:07:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:07:54,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 17:07:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 17:07:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 17:07:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:07:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 17:07:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 17:07:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 17:07:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 17:07:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 17:07:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 17:07:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 17:07:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:07:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:07:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:07:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:07:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 17:07:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:07:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:07:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:07:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:54,840 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-07-22 17:07:54,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:07:54,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804803992] [2022-07-22 17:07:54,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804803992] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:07:54,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979544418] [2022-07-22 17:07:54,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:07:54,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:07:54,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:07:54,850 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:07:54,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 17:07:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:07:55,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 2143 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:07:55,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:07:55,173 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-22 17:07:55,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:07:55,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979544418] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:07:55,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:07:55,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2022-07-22 17:07:55,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519348423] [2022-07-22 17:07:55,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:07:55,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:07:55,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:07:55,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:07:55,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:07:55,175 INFO L87 Difference]: Start difference. First operand 21268 states and 34334 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-22 17:08:01,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:08:01,229 INFO L93 Difference]: Finished difference Result 43524 states and 71002 transitions. [2022-07-22 17:08:01,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:08:01,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 286 [2022-07-22 17:08:01,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:08:01,339 INFO L225 Difference]: With dead ends: 43524 [2022-07-22 17:08:01,340 INFO L226 Difference]: Without dead ends: 22360 [2022-07-22 17:08:01,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-07-22 17:08:01,422 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 213 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:08:01,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 2277 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:08:01,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22360 states. [2022-07-22 17:08:07,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22360 to 22360. [2022-07-22 17:08:07,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22360 states, 17533 states have (on average 1.5644213768322592) internal successors, (27429), 18177 states have internal predecessors, (27429), 3485 states have call successors, (3485), 1038 states have call predecessors, (3485), 1341 states have return successors, (5464), 3570 states have call predecessors, (5464), 3480 states have call successors, (5464) [2022-07-22 17:08:07,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22360 states to 22360 states and 36378 transitions. [2022-07-22 17:08:07,110 INFO L78 Accepts]: Start accepts. Automaton has 22360 states and 36378 transitions. Word has length 286 [2022-07-22 17:08:07,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:08:07,111 INFO L495 AbstractCegarLoop]: Abstraction has 22360 states and 36378 transitions. [2022-07-22 17:08:07,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-22 17:08:07,111 INFO L276 IsEmpty]: Start isEmpty. Operand 22360 states and 36378 transitions. [2022-07-22 17:08:07,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-07-22 17:08:07,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:08:07,120 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:08:07,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 17:08:07,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-07-22 17:08:07,342 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:08:07,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:08:07,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1939238059, now seen corresponding path program 1 times [2022-07-22 17:08:07,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:08:07,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931178916] [2022-07-22 17:08:07,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:08:07,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:08:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:07,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:08:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:07,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:07,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:08:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:07,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:08:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:07,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:07,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:07,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:07,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:08:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:07,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:07,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:08:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:07,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:07,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:07,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:08:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:07,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 17:08:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:07,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:08:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:07,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:08:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:07,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:08:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:07,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 17:08:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:07,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 17:08:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:07,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 17:08:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:07,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 17:08:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:07,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-22 17:08:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:07,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-22 17:08:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:07,588 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 20 proven. 15 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-22 17:08:07,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:08:07,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931178916] [2022-07-22 17:08:07,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931178916] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:08:07,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375905070] [2022-07-22 17:08:07,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:08:07,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:08:07,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:08:07,591 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:08:07,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 17:08:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:07,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 1700 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:08:07,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:08:07,855 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-22 17:08:07,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:08:07,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375905070] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:08:07,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:08:07,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 17:08:07,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356900146] [2022-07-22 17:08:07,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:08:07,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:08:07,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:08:07,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:08:07,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:08:07,859 INFO L87 Difference]: Start difference. First operand 22360 states and 36378 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-22 17:08:13,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:08:13,934 INFO L93 Difference]: Finished difference Result 45484 states and 74436 transitions. [2022-07-22 17:08:13,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:08:13,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 217 [2022-07-22 17:08:13,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:08:14,018 INFO L225 Difference]: With dead ends: 45484 [2022-07-22 17:08:14,019 INFO L226 Difference]: Without dead ends: 22900 [2022-07-22 17:08:14,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:08:14,078 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 17 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2385 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:08:14,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2385 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:08:14,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22900 states. [2022-07-22 17:08:19,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22900 to 22888. [2022-07-22 17:08:19,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22888 states, 17995 states have (on average 1.5368157821617117) internal successors, (27655), 18639 states have internal predecessors, (27655), 3485 states have call successors, (3485), 1104 states have call predecessors, (3485), 1407 states have return successors, (5558), 3570 states have call predecessors, (5558), 3480 states have call successors, (5558) [2022-07-22 17:08:19,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22888 states to 22888 states and 36698 transitions. [2022-07-22 17:08:19,673 INFO L78 Accepts]: Start accepts. Automaton has 22888 states and 36698 transitions. Word has length 217 [2022-07-22 17:08:19,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:08:19,673 INFO L495 AbstractCegarLoop]: Abstraction has 22888 states and 36698 transitions. [2022-07-22 17:08:19,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-22 17:08:19,673 INFO L276 IsEmpty]: Start isEmpty. Operand 22888 states and 36698 transitions. [2022-07-22 17:08:19,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-07-22 17:08:19,682 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:08:19,682 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:08:19,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 17:08:19,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-07-22 17:08:19,890 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:08:19,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:08:19,890 INFO L85 PathProgramCache]: Analyzing trace with hash 487649840, now seen corresponding path program 1 times [2022-07-22 17:08:19,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:08:19,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055409012] [2022-07-22 17:08:19,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:08:19,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:08:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:19,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:08:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:19,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:19,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:08:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:20,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:08:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:20,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:20,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:20,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:20,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:08:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:20,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:20,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:08:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:20,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:20,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:20,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:08:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:20,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 17:08:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:20,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:08:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:20,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:08:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:20,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:08:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:20,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 17:08:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:20,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 17:08:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:20,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 17:08:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:20,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 17:08:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:20,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-22 17:08:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:20,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 17:08:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:20,177 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-22 17:08:20,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:08:20,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055409012] [2022-07-22 17:08:20,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055409012] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:08:20,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273712825] [2022-07-22 17:08:20,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:08:20,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:08:20,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:08:20,179 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:08:20,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 17:08:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:20,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 1701 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 17:08:20,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:08:20,443 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-22 17:08:20,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:08:20,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273712825] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:08:20,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:08:20,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-07-22 17:08:20,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626464829] [2022-07-22 17:08:20,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:08:20,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:08:20,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:08:20,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:08:20,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:08:20,445 INFO L87 Difference]: Start difference. First operand 22888 states and 36698 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-22 17:08:26,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:08:26,360 INFO L93 Difference]: Finished difference Result 45020 states and 72822 transitions. [2022-07-22 17:08:26,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:08:26,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 219 [2022-07-22 17:08:26,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:08:26,443 INFO L225 Difference]: With dead ends: 45020 [2022-07-22 17:08:26,443 INFO L226 Difference]: Without dead ends: 21906 [2022-07-22 17:08:26,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:08:26,496 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 16 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2384 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:08:26,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 2384 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:08:26,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21906 states. [2022-07-22 17:08:31,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21906 to 21874. [2022-07-22 17:08:32,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21874 states, 17137 states have (on average 1.5405846997724222) internal successors, (26401), 17777 states have internal predecessors, (26401), 3407 states have call successors, (3407), 1080 states have call predecessors, (3407), 1329 states have return successors, (5314), 3442 states have call predecessors, (5314), 3402 states have call successors, (5314) [2022-07-22 17:08:32,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21874 states to 21874 states and 35122 transitions. [2022-07-22 17:08:32,190 INFO L78 Accepts]: Start accepts. Automaton has 21874 states and 35122 transitions. Word has length 219 [2022-07-22 17:08:32,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:08:32,190 INFO L495 AbstractCegarLoop]: Abstraction has 21874 states and 35122 transitions. [2022-07-22 17:08:32,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-22 17:08:32,190 INFO L276 IsEmpty]: Start isEmpty. Operand 21874 states and 35122 transitions. [2022-07-22 17:08:32,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-07-22 17:08:32,199 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:08:32,199 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:08:32,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-22 17:08:32,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-07-22 17:08:32,418 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:08:32,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:08:32,418 INFO L85 PathProgramCache]: Analyzing trace with hash -429472118, now seen corresponding path program 1 times [2022-07-22 17:08:32,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:08:32,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859310380] [2022-07-22 17:08:32,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:08:32,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:08:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:32,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:08:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:32,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:32,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:08:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:32,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:08:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:32,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:32,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:32,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:32,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:08:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:32,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:32,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:08:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:32,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:32,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:32,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:08:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:32,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 17:08:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:32,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 17:08:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:32,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:08:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:32,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 17:08:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:32,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 17:08:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:32,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 17:08:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:32,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 17:08:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:32,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 17:08:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:32,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-22 17:08:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:32,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 17:08:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:32,760 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-07-22 17:08:32,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:08:32,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859310380] [2022-07-22 17:08:32,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859310380] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:08:32,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:08:32,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:08:32,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351041612] [2022-07-22 17:08:32,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:08:32,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:08:32,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:08:32,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:08:32,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:08:32,762 INFO L87 Difference]: Start difference. First operand 21874 states and 35122 transitions. Second operand has 10 states, 9 states have (on average 14.666666666666666) internal successors, (132), 6 states have internal predecessors, (132), 3 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-22 17:08:44,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:08:44,749 INFO L93 Difference]: Finished difference Result 39422 states and 65546 transitions. [2022-07-22 17:08:44,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:08:44,749 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.666666666666666) internal successors, (132), 6 states have internal predecessors, (132), 3 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 219 [2022-07-22 17:08:44,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:08:44,862 INFO L225 Difference]: With dead ends: 39422 [2022-07-22 17:08:44,863 INFO L226 Difference]: Without dead ends: 25651 [2022-07-22 17:08:44,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-22 17:08:44,902 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 1732 mSDsluCounter, 2639 mSDsCounter, 0 mSdLazyCounter, 4401 mSolverCounterSat, 562 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 3511 SdHoareTripleChecker+Invalid, 4963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 562 IncrementalHoareTripleChecker+Valid, 4401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:08:44,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1809 Valid, 3511 Invalid, 4963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [562 Valid, 4401 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-22 17:08:44,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25651 states.