./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec2_product20.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 e1240a0d3e559b8971965b03cecb352351a22be921567ab044722f9bb2872bc1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 16:51:14,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 16:51:14,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 16:51:14,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 16:51:14,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 16:51:14,909 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 16:51:14,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 16:51:14,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 16:51:14,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 16:51:14,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 16:51:14,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 16:51:14,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 16:51:14,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 16:51:14,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 16:51:14,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 16:51:14,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 16:51:14,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 16:51:14,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 16:51:14,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 16:51:14,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 16:51:14,935 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 16:51:14,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 16:51:14,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 16:51:14,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 16:51:14,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 16:51:14,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 16:51:14,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 16:51:14,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 16:51:14,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 16:51:14,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 16:51:14,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 16:51:14,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 16:51:14,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 16:51:14,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 16:51:14,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 16:51:14,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 16:51:14,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 16:51:14,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 16:51:14,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 16:51:14,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 16:51:14,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 16:51:14,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 16:51:14,952 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 16:51:14,978 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 16:51:14,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 16:51:14,978 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 16:51:14,978 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 16:51:14,979 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 16:51:14,979 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 16:51:14,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 16:51:14,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 16:51:14,980 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 16:51:14,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 16:51:14,981 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 16:51:14,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 16:51:14,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 16:51:14,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 16:51:14,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 16:51:14,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 16:51:14,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 16:51:14,982 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 16:51:14,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 16:51:14,983 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 16:51:14,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 16:51:14,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 16:51:14,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 16:51:14,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 16:51:14,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 16:51:14,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 16:51:14,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 16:51:14,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 16:51:14,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 16:51:14,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 16:51:14,984 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 16:51:14,985 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 16:51:14,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 16:51:14,985 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1240a0d3e559b8971965b03cecb352351a22be921567ab044722f9bb2872bc1 [2022-07-19 16:51:15,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 16:51:15,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 16:51:15,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 16:51:15,184 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 16:51:15,185 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 16:51:15,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c [2022-07-19 16:51:15,251 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f42a0975/18bebf62d9094d4c92f53c4a6d83e2ba/FLAG5ef6bbbfa [2022-07-19 16:51:15,706 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 16:51:15,706 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c [2022-07-19 16:51:15,716 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f42a0975/18bebf62d9094d4c92f53c4a6d83e2ba/FLAG5ef6bbbfa [2022-07-19 16:51:15,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f42a0975/18bebf62d9094d4c92f53c4a6d83e2ba [2022-07-19 16:51:15,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 16:51:15,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 16:51:15,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 16:51:15,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 16:51:15,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 16:51:15,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 04:51:15" (1/1) ... [2022-07-19 16:51:15,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6779d213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:15, skipping insertion in model container [2022-07-19 16:51:15,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 04:51:15" (1/1) ... [2022-07-19 16:51:15,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 16:51:15,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 16:51:16,050 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_product20.cil.c[38445,38458] [2022-07-19 16:51:16,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 16:51:16,159 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 16:51:16,209 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_product20.cil.c[38445,38458] [2022-07-19 16:51:16,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 16:51:16,247 INFO L208 MainTranslator]: Completed translation [2022-07-19 16:51:16,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:16 WrapperNode [2022-07-19 16:51:16,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 16:51:16,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 16:51:16,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 16:51:16,250 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 16:51:16,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:16" (1/1) ... [2022-07-19 16:51:16,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:16" (1/1) ... [2022-07-19 16:51:16,312 INFO L137 Inliner]: procedures = 96, calls = 346, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 1134 [2022-07-19 16:51:16,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 16:51:16,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 16:51:16,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 16:51:16,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 16:51:16,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:16" (1/1) ... [2022-07-19 16:51:16,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:16" (1/1) ... [2022-07-19 16:51:16,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:16" (1/1) ... [2022-07-19 16:51:16,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:16" (1/1) ... [2022-07-19 16:51:16,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:16" (1/1) ... [2022-07-19 16:51:16,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:16" (1/1) ... [2022-07-19 16:51:16,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:16" (1/1) ... [2022-07-19 16:51:16,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 16:51:16,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 16:51:16,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 16:51:16,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 16:51:16,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:16" (1/1) ... [2022-07-19 16:51:16,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 16:51:16,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:51:16,426 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 16:51:16,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 16:51:16,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 16:51:16,454 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-19 16:51:16,454 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-19 16:51:16,454 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-19 16:51:16,454 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-19 16:51:16,455 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2022-07-19 16:51:16,455 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2022-07-19 16:51:16,466 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-19 16:51:16,466 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-19 16:51:16,466 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-07-19 16:51:16,466 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-07-19 16:51:16,467 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-19 16:51:16,467 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-19 16:51:16,467 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-19 16:51:16,467 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-19 16:51:16,467 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-19 16:51:16,467 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-19 16:51:16,467 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-19 16:51:16,468 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-19 16:51:16,468 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-19 16:51:16,468 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-19 16:51:16,468 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-19 16:51:16,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-19 16:51:16,468 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-19 16:51:16,469 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-19 16:51:16,469 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-19 16:51:16,469 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-19 16:51:16,469 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-19 16:51:16,469 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-19 16:51:16,469 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-19 16:51:16,470 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-19 16:51:16,470 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-19 16:51:16,470 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-19 16:51:16,470 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-19 16:51:16,470 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-19 16:51:16,470 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-19 16:51:16,471 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-19 16:51:16,471 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-19 16:51:16,471 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-19 16:51:16,471 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-19 16:51:16,471 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-19 16:51:16,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 16:51:16,471 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-19 16:51:16,472 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-19 16:51:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-19 16:51:16,472 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-19 16:51:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-19 16:51:16,472 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-19 16:51:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 16:51:16,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 16:51:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-19 16:51:16,473 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-19 16:51:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-07-19 16:51:16,474 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-07-19 16:51:16,600 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 16:51:16,615 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 16:51:17,329 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 16:51:17,336 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 16:51:17,337 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 16:51:17,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 04:51:17 BoogieIcfgContainer [2022-07-19 16:51:17,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 16:51:17,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 16:51:17,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 16:51:17,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 16:51:17,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 04:51:15" (1/3) ... [2022-07-19 16:51:17,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3287dae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 04:51:17, skipping insertion in model container [2022-07-19 16:51:17,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:16" (2/3) ... [2022-07-19 16:51:17,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3287dae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 04:51:17, skipping insertion in model container [2022-07-19 16:51:17,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 04:51:17" (3/3) ... [2022-07-19 16:51:17,344 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product20.cil.c [2022-07-19 16:51:17,353 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 16:51:17,353 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 16:51:17,389 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 16:51:17,393 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@c7a1af0, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@78944d1f [2022-07-19 16:51:17,393 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 16:51:17,398 INFO L276 IsEmpty]: Start isEmpty. Operand has 569 states, 443 states have (on average 1.6862302483069977) internal successors, (747), 466 states have internal predecessors, (747), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 92 states have call predecessors, (99), 99 states have call successors, (99) [2022-07-19 16:51:17,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-19 16:51:17,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:17,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:17,407 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:17,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:17,411 INFO L85 PathProgramCache]: Analyzing trace with hash 69269955, now seen corresponding path program 1 times [2022-07-19 16:51:17,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:17,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988820808] [2022-07-19 16:51:17,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:17,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:17,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:17,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:17,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:51:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:17,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 16:51:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:17,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:17,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:18,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:51:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:18,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:51:18,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:18,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988820808] [2022-07-19 16:51:18,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988820808] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:18,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:18,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:51:18,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478503183] [2022-07-19 16:51:18,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:18,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:51:18,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:18,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:51:18,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:51:18,061 INFO L87 Difference]: Start difference. First operand has 569 states, 443 states have (on average 1.6862302483069977) internal successors, (747), 466 states have internal predecessors, (747), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 92 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:21,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:21,626 INFO L93 Difference]: Finished difference Result 1281 states and 2159 transitions. [2022-07-19 16:51:21,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:51:21,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-07-19 16:51:21,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:21,644 INFO L225 Difference]: With dead ends: 1281 [2022-07-19 16:51:21,644 INFO L226 Difference]: Without dead ends: 724 [2022-07-19 16:51:21,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:51:21,653 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 1128 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 2444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:21,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1213 Valid, 1700 Invalid, 2444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 2139 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-19 16:51:21,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-07-19 16:51:21,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2022-07-19 16:51:21,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6819221967963387) internal successors, (735), 458 states have internal predecessors, (735), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-07-19 16:51:21,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 928 transitions. [2022-07-19 16:51:21,772 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 928 transitions. Word has length 60 [2022-07-19 16:51:21,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:21,772 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 928 transitions. [2022-07-19 16:51:21,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:21,773 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 928 transitions. [2022-07-19 16:51:21,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-19 16:51:21,779 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:21,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:21,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 16:51:21,780 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:21,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:21,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1582622137, now seen corresponding path program 1 times [2022-07-19 16:51:21,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:21,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216108495] [2022-07-19 16:51:21,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:21,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:21,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:21,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:21,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:22,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:51:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:22,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:22,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:22,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:51:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:22,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:51:22,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:22,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216108495] [2022-07-19 16:51:22,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216108495] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:22,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:22,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:51:22,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366186396] [2022-07-19 16:51:22,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:22,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:51:22,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:22,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:51:22,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:51:22,103 INFO L87 Difference]: Start difference. First operand 561 states and 928 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:25,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:25,356 INFO L93 Difference]: Finished difference Result 1267 states and 2125 transitions. [2022-07-19 16:51:25,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:51:25,360 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-07-19 16:51:25,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:25,368 INFO L225 Difference]: With dead ends: 1267 [2022-07-19 16:51:25,368 INFO L226 Difference]: Without dead ends: 724 [2022-07-19 16:51:25,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:51:25,372 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 1124 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 2140 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 2444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 2140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:25,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1209 Valid, 1669 Invalid, 2444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 2140 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 16:51:25,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-07-19 16:51:25,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2022-07-19 16:51:25,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6796338672768878) internal successors, (734), 458 states have internal predecessors, (734), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-07-19 16:51:25,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 927 transitions. [2022-07-19 16:51:25,425 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 927 transitions. Word has length 63 [2022-07-19 16:51:25,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:25,426 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 927 transitions. [2022-07-19 16:51:25,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:25,427 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 927 transitions. [2022-07-19 16:51:25,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 16:51:25,430 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:25,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:25,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 16:51:25,430 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:25,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:25,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1632470035, now seen corresponding path program 1 times [2022-07-19 16:51:25,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:25,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581833811] [2022-07-19 16:51:25,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:25,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:25,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:25,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:25,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:51:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:25,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 16:51:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:25,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:25,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:25,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:51:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:25,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:51:25,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:25,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581833811] [2022-07-19 16:51:25,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581833811] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:25,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:25,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:51:25,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324357091] [2022-07-19 16:51:25,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:25,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:51:25,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:25,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:51:25,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:51:25,738 INFO L87 Difference]: Start difference. First operand 561 states and 927 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:28,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:28,841 INFO L93 Difference]: Finished difference Result 1267 states and 2124 transitions. [2022-07-19 16:51:28,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:51:28,841 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2022-07-19 16:51:28,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:28,845 INFO L225 Difference]: With dead ends: 1267 [2022-07-19 16:51:28,845 INFO L226 Difference]: Without dead ends: 724 [2022-07-19 16:51:28,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:51:28,848 INFO L413 NwaCegarLoop]: 862 mSDtfsCounter, 1113 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 2135 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 2430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 2135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:28,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 1704 Invalid, 2430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 2135 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-19 16:51:28,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-07-19 16:51:28,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2022-07-19 16:51:28,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.677345537757437) internal successors, (733), 458 states have internal predecessors, (733), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-07-19 16:51:28,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 926 transitions. [2022-07-19 16:51:28,893 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 926 transitions. Word has length 64 [2022-07-19 16:51:28,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:28,893 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 926 transitions. [2022-07-19 16:51:28,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:28,894 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 926 transitions. [2022-07-19 16:51:28,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 16:51:28,894 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:28,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:28,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 16:51:28,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:28,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:28,895 INFO L85 PathProgramCache]: Analyzing trace with hash -2079372939, now seen corresponding path program 1 times [2022-07-19 16:51:28,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:28,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259648233] [2022-07-19 16:51:28,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:28,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:28,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:29,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:29,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 16:51:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:29,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 16:51:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:29,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:29,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:29,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:51:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:29,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:51:29,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:29,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259648233] [2022-07-19 16:51:29,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259648233] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:29,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:29,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:51:29,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738633723] [2022-07-19 16:51:29,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:29,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:51:29,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:29,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:51:29,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:51:29,214 INFO L87 Difference]: Start difference. First operand 561 states and 926 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:32,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:32,647 INFO L93 Difference]: Finished difference Result 1267 states and 2123 transitions. [2022-07-19 16:51:32,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:51:32,648 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-19 16:51:32,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:32,651 INFO L225 Difference]: With dead ends: 1267 [2022-07-19 16:51:32,651 INFO L226 Difference]: Without dead ends: 724 [2022-07-19 16:51:32,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:51:32,654 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 668 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 2318 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 2464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 2318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:32,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1697 Invalid, 2464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 2318 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-19 16:51:32,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-07-19 16:51:32,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2022-07-19 16:51:32,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6750572082379862) internal successors, (732), 458 states have internal predecessors, (732), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-07-19 16:51:32,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 925 transitions. [2022-07-19 16:51:32,690 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 925 transitions. Word has length 65 [2022-07-19 16:51:32,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:32,691 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 925 transitions. [2022-07-19 16:51:32,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:32,692 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 925 transitions. [2022-07-19 16:51:32,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 16:51:32,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:32,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:32,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 16:51:32,694 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:32,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:32,694 INFO L85 PathProgramCache]: Analyzing trace with hash -2144548657, now seen corresponding path program 1 times [2022-07-19 16:51:32,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:32,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233100697] [2022-07-19 16:51:32,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:32,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:32,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:32,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:32,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 16:51:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:32,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 16:51:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:32,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:32,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:32,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:32,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:51:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:32,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:51:32,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:32,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233100697] [2022-07-19 16:51:32,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233100697] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:32,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:32,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:51:32,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612839450] [2022-07-19 16:51:32,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:32,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:51:32,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:32,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:51:32,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:51:32,951 INFO L87 Difference]: Start difference. First operand 561 states and 925 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:35,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:35,947 INFO L93 Difference]: Finished difference Result 1267 states and 2122 transitions. [2022-07-19 16:51:35,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:51:35,948 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-19 16:51:35,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:35,951 INFO L225 Difference]: With dead ends: 1267 [2022-07-19 16:51:35,951 INFO L226 Difference]: Without dead ends: 724 [2022-07-19 16:51:35,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:51:35,960 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 1112 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 2131 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 2131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:35,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 1672 Invalid, 2436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 2131 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-19 16:51:35,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-07-19 16:51:36,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2022-07-19 16:51:36,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6727688787185355) internal successors, (731), 458 states have internal predecessors, (731), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-07-19 16:51:36,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 924 transitions. [2022-07-19 16:51:36,014 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 924 transitions. Word has length 66 [2022-07-19 16:51:36,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:36,015 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 924 transitions. [2022-07-19 16:51:36,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:36,015 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 924 transitions. [2022-07-19 16:51:36,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 16:51:36,016 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:36,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:36,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 16:51:36,017 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:36,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:36,017 INFO L85 PathProgramCache]: Analyzing trace with hash -832189135, now seen corresponding path program 1 times [2022-07-19 16:51:36,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:36,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275082495] [2022-07-19 16:51:36,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:36,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:36,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:36,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:36,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:36,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 16:51:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:36,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:36,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:36,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:36,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:51:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:36,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:51:36,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:36,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275082495] [2022-07-19 16:51:36,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275082495] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:36,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:36,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 16:51:36,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862080431] [2022-07-19 16:51:36,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:36,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 16:51:36,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:36,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 16:51:36,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:51:36,318 INFO L87 Difference]: Start difference. First operand 561 states and 924 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:39,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:39,945 INFO L93 Difference]: Finished difference Result 1227 states and 2046 transitions. [2022-07-19 16:51:39,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:51:39,946 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-07-19 16:51:39,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:39,949 INFO L225 Difference]: With dead ends: 1227 [2022-07-19 16:51:39,949 INFO L226 Difference]: Without dead ends: 724 [2022-07-19 16:51:39,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:51:39,951 INFO L413 NwaCegarLoop]: 804 mSDtfsCounter, 758 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 3831 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 2233 SdHoareTripleChecker+Invalid, 4016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 3831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:39,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 2233 Invalid, 4016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 3831 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-19 16:51:39,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-07-19 16:51:39,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2022-07-19 16:51:39,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6613272311212814) internal successors, (726), 458 states have internal predecessors, (726), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-07-19 16:51:39,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 919 transitions. [2022-07-19 16:51:39,985 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 919 transitions. Word has length 67 [2022-07-19 16:51:39,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:39,986 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 919 transitions. [2022-07-19 16:51:39,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:39,986 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 919 transitions. [2022-07-19 16:51:39,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-19 16:51:39,987 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:39,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:39,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 16:51:39,988 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:39,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:39,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1045699021, now seen corresponding path program 1 times [2022-07-19 16:51:39,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:39,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893730365] [2022-07-19 16:51:39,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:39,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:40,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:40,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:40,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:40,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 16:51:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:40,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:40,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:40,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:51:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:40,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:51:40,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:40,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893730365] [2022-07-19 16:51:40,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893730365] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:40,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:40,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 16:51:40,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569371562] [2022-07-19 16:51:40,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:40,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 16:51:40,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:40,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 16:51:40,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:51:40,286 INFO L87 Difference]: Start difference. First operand 561 states and 919 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:43,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:43,660 INFO L93 Difference]: Finished difference Result 1227 states and 2041 transitions. [2022-07-19 16:51:43,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:51:43,661 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-07-19 16:51:43,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:43,664 INFO L225 Difference]: With dead ends: 1227 [2022-07-19 16:51:43,664 INFO L226 Difference]: Without dead ends: 724 [2022-07-19 16:51:43,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:51:43,666 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 1199 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 3622 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 3957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 3622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:43,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1284 Valid, 2200 Invalid, 3957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 3622 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-19 16:51:43,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-07-19 16:51:43,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2022-07-19 16:51:43,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6498855835240274) internal successors, (721), 458 states have internal predecessors, (721), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-07-19 16:51:43,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 914 transitions. [2022-07-19 16:51:43,711 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 914 transitions. Word has length 68 [2022-07-19 16:51:43,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:43,712 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 914 transitions. [2022-07-19 16:51:43,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:43,713 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 914 transitions. [2022-07-19 16:51:43,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-19 16:51:43,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:43,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:43,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 16:51:43,720 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:43,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:43,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1182173814, now seen corresponding path program 1 times [2022-07-19 16:51:43,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:43,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534940285] [2022-07-19 16:51:43,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:43,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:43,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:43,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:43,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:43,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 16:51:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:44,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:44,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:44,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:51:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:44,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:51:44,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:44,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534940285] [2022-07-19 16:51:44,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534940285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:44,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:44,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 16:51:44,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064120405] [2022-07-19 16:51:44,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:44,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 16:51:44,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:44,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 16:51:44,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:51:44,016 INFO L87 Difference]: Start difference. First operand 561 states and 914 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:47,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:47,582 INFO L93 Difference]: Finished difference Result 1227 states and 2036 transitions. [2022-07-19 16:51:47,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:51:47,588 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-07-19 16:51:47,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:47,591 INFO L225 Difference]: With dead ends: 1227 [2022-07-19 16:51:47,591 INFO L226 Difference]: Without dead ends: 724 [2022-07-19 16:51:47,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:51:47,593 INFO L413 NwaCegarLoop]: 804 mSDtfsCounter, 756 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 3771 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 2233 SdHoareTripleChecker+Invalid, 3946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 3771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:47,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 2233 Invalid, 3946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 3771 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-19 16:51:47,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-07-19 16:51:47,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2022-07-19 16:51:47,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6384439359267735) internal successors, (716), 458 states have internal predecessors, (716), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-07-19 16:51:47,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 909 transitions. [2022-07-19 16:51:47,637 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 909 transitions. Word has length 69 [2022-07-19 16:51:47,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:47,638 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 909 transitions. [2022-07-19 16:51:47,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:47,638 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 909 transitions. [2022-07-19 16:51:47,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-19 16:51:47,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:47,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:47,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 16:51:47,639 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:47,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:47,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1125558094, now seen corresponding path program 1 times [2022-07-19 16:51:47,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:47,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83728382] [2022-07-19 16:51:47,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:47,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:47,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:47,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:47,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:47,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:51:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:47,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:47,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:47,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:51:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:47,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:51:47,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:47,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83728382] [2022-07-19 16:51:47,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83728382] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:47,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:47,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 16:51:47,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361125469] [2022-07-19 16:51:47,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:47,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 16:51:47,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:47,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 16:51:47,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:51:47,874 INFO L87 Difference]: Start difference. First operand 561 states and 909 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:51,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:51,447 INFO L93 Difference]: Finished difference Result 1227 states and 2031 transitions. [2022-07-19 16:51:51,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:51:51,448 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-07-19 16:51:51,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:51,450 INFO L225 Difference]: With dead ends: 1227 [2022-07-19 16:51:51,450 INFO L226 Difference]: Without dead ends: 724 [2022-07-19 16:51:51,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:51:51,452 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 766 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 3741 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 2195 SdHoareTripleChecker+Invalid, 3913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 3741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:51,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 2195 Invalid, 3913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 3741 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-19 16:51:51,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-07-19 16:51:51,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2022-07-19 16:51:51,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6270022883295194) internal successors, (711), 458 states have internal predecessors, (711), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-07-19 16:51:51,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 904 transitions. [2022-07-19 16:51:51,486 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 904 transitions. Word has length 70 [2022-07-19 16:51:51,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:51,487 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 904 transitions. [2022-07-19 16:51:51,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:51,487 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 904 transitions. [2022-07-19 16:51:51,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-19 16:51:51,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:51,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:51,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 16:51:51,488 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:51,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:51,489 INFO L85 PathProgramCache]: Analyzing trace with hash -181173421, now seen corresponding path program 1 times [2022-07-19 16:51:51,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:51,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057172286] [2022-07-19 16:51:51,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:51,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:51,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:51,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:51,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:51,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:51:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:51,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:51,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:51,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:51:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:51,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:51:51,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:51,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057172286] [2022-07-19 16:51:51,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057172286] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:51,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:51,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:51:51,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998726495] [2022-07-19 16:51:51,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:51,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:51:51,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:51,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:51:51,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:51:51,764 INFO L87 Difference]: Start difference. First operand 561 states and 904 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:55,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:55,108 INFO L93 Difference]: Finished difference Result 1242 states and 2046 transitions. [2022-07-19 16:51:55,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 16:51:55,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-07-19 16:51:55,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:55,111 INFO L225 Difference]: With dead ends: 1242 [2022-07-19 16:51:55,111 INFO L226 Difference]: Without dead ends: 745 [2022-07-19 16:51:55,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:51:55,113 INFO L413 NwaCegarLoop]: 818 mSDtfsCounter, 736 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 2228 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 2384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:55,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 1634 Invalid, 2384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 2228 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-19 16:51:55,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-07-19 16:51:55,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 563. [2022-07-19 16:51:55,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 439 states have (on average 1.6241457858769932) internal successors, (713), 460 states have internal predecessors, (713), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-07-19 16:51:55,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 906 transitions. [2022-07-19 16:51:55,155 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 906 transitions. Word has length 70 [2022-07-19 16:51:55,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:55,155 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 906 transitions. [2022-07-19 16:51:55,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:55,155 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 906 transitions. [2022-07-19 16:51:55,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-19 16:51:55,156 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:55,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:55,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 16:51:55,157 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:55,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:55,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1894286405, now seen corresponding path program 1 times [2022-07-19 16:51:55,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:55,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817169485] [2022-07-19 16:51:55,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:55,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:55,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:55,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:55,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:55,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:51:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:55,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:55,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:55,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:51:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:55,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:51:55,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:55,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817169485] [2022-07-19 16:51:55,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817169485] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:55,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:55,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 16:51:55,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505516580] [2022-07-19 16:51:55,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:55,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 16:51:55,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:55,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 16:51:55,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:51:55,454 INFO L87 Difference]: Start difference. First operand 563 states and 906 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:58,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:58,980 INFO L93 Difference]: Finished difference Result 1233 states and 2032 transitions. [2022-07-19 16:51:58,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:51:58,981 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2022-07-19 16:51:58,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:58,986 INFO L225 Difference]: With dead ends: 1233 [2022-07-19 16:51:58,986 INFO L226 Difference]: Without dead ends: 728 [2022-07-19 16:51:58,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:51:58,988 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 764 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 3711 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 3880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 3711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:58,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 2171 Invalid, 3880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 3711 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-19 16:51:58,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-07-19 16:51:59,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 563. [2022-07-19 16:51:59,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 439 states have (on average 1.612756264236902) internal successors, (708), 460 states have internal predecessors, (708), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-07-19 16:51:59,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 901 transitions. [2022-07-19 16:51:59,029 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 901 transitions. Word has length 71 [2022-07-19 16:51:59,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:59,030 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 901 transitions. [2022-07-19 16:51:59,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:59,030 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 901 transitions. [2022-07-19 16:51:59,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-19 16:51:59,044 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:59,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:59,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 16:51:59,045 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:59,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:59,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1916022968, now seen corresponding path program 1 times [2022-07-19 16:51:59,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:59,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722084633] [2022-07-19 16:51:59,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:59,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:51:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:51:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:51:59,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:59,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722084633] [2022-07-19 16:51:59,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722084633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:59,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:59,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:51:59,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227823528] [2022-07-19 16:51:59,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:59,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:51:59,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:59,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:51:59,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:51:59,288 INFO L87 Difference]: Start difference. First operand 563 states and 901 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:02,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:02,279 INFO L93 Difference]: Finished difference Result 1246 states and 2043 transitions. [2022-07-19 16:52:02,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 16:52:02,279 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2022-07-19 16:52:02,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:02,282 INFO L225 Difference]: With dead ends: 1246 [2022-07-19 16:52:02,282 INFO L226 Difference]: Without dead ends: 749 [2022-07-19 16:52:02,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:52:02,284 INFO L413 NwaCegarLoop]: 820 mSDtfsCounter, 1181 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 2040 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 2342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 2040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:02,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 1643 Invalid, 2342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 2040 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 16:52:02,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-07-19 16:52:02,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 566. [2022-07-19 16:52:02,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 442 states have (on average 1.6085972850678734) internal successors, (711), 463 states have internal predecessors, (711), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-07-19 16:52:02,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 904 transitions. [2022-07-19 16:52:02,322 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 904 transitions. Word has length 71 [2022-07-19 16:52:02,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:02,322 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 904 transitions. [2022-07-19 16:52:02,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:02,322 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 904 transitions. [2022-07-19 16:52:02,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-19 16:52:02,323 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:02,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:02,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 16:52:02,323 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:02,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:02,324 INFO L85 PathProgramCache]: Analyzing trace with hash 2096423831, now seen corresponding path program 1 times [2022-07-19 16:52:02,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:02,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976515523] [2022-07-19 16:52:02,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:02,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:02,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:02,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:02,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:02,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:52:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:02,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:02,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:02,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:52:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:02,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:02,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:02,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976515523] [2022-07-19 16:52:02,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976515523] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:02,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:02,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 16:52:02,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324256000] [2022-07-19 16:52:02,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:02,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 16:52:02,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:02,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 16:52:02,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:52:02,610 INFO L87 Difference]: Start difference. First operand 566 states and 904 transitions. Second operand has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:52:07,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:07,280 INFO L93 Difference]: Finished difference Result 1250 states and 2049 transitions. [2022-07-19 16:52:07,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:52:07,286 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2022-07-19 16:52:07,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:07,290 INFO L225 Difference]: With dead ends: 1250 [2022-07-19 16:52:07,290 INFO L226 Difference]: Without dead ends: 756 [2022-07-19 16:52:07,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-07-19 16:52:07,293 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 774 mSDsluCounter, 2338 mSDsCounter, 0 mSdLazyCounter, 5990 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 6146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 5990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:07,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 3172 Invalid, 6146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 5990 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-19 16:52:07,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2022-07-19 16:52:07,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 577. [2022-07-19 16:52:07,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 450 states have (on average 1.6044444444444443) internal successors, (722), 473 states have internal predecessors, (722), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2022-07-19 16:52:07,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 919 transitions. [2022-07-19 16:52:07,368 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 919 transitions. Word has length 72 [2022-07-19 16:52:07,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:07,368 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 919 transitions. [2022-07-19 16:52:07,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:52:07,369 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 919 transitions. [2022-07-19 16:52:07,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-19 16:52:07,369 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:07,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:07,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 16:52:07,370 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:07,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:07,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1416234744, now seen corresponding path program 1 times [2022-07-19 16:52:07,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:07,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546851630] [2022-07-19 16:52:07,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:07,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:07,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:07,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:07,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:07,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:52:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:07,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:07,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:07,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:52:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:07,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:07,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:07,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546851630] [2022-07-19 16:52:07,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546851630] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:07,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:07,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:52:07,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345322734] [2022-07-19 16:52:07,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:07,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:52:07,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:07,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:52:07,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:52:07,607 INFO L87 Difference]: Start difference. First operand 577 states and 919 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:10,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:10,589 INFO L93 Difference]: Finished difference Result 1273 states and 2080 transitions. [2022-07-19 16:52:10,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 16:52:10,590 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-19 16:52:10,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:10,593 INFO L225 Difference]: With dead ends: 1273 [2022-07-19 16:52:10,593 INFO L226 Difference]: Without dead ends: 773 [2022-07-19 16:52:10,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:52:10,594 INFO L413 NwaCegarLoop]: 812 mSDtfsCounter, 1183 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 2043 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 2353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 2043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:10,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1268 Valid, 1615 Invalid, 2353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 2043 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 16:52:10,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-07-19 16:52:10,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 581. [2022-07-19 16:52:10,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 454 states have (on average 1.5969162995594715) internal successors, (725), 477 states have internal predecessors, (725), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2022-07-19 16:52:10,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 922 transitions. [2022-07-19 16:52:10,637 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 922 transitions. Word has length 72 [2022-07-19 16:52:10,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:10,637 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 922 transitions. [2022-07-19 16:52:10,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:10,638 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 922 transitions. [2022-07-19 16:52:10,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-19 16:52:10,638 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:10,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:10,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 16:52:10,639 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:10,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:10,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1505150760, now seen corresponding path program 1 times [2022-07-19 16:52:10,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:10,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49143568] [2022-07-19 16:52:10,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:10,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:10,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:10,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:10,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:10,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:52:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:10,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:10,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:10,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:52:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:10,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:10,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:10,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49143568] [2022-07-19 16:52:10,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49143568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:10,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:10,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:52:10,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037563698] [2022-07-19 16:52:10,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:10,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:52:10,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:10,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:52:10,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:52:10,866 INFO L87 Difference]: Start difference. First operand 581 states and 922 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:14,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:14,045 INFO L93 Difference]: Finished difference Result 1315 states and 2123 transitions. [2022-07-19 16:52:14,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:52:14,046 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-19 16:52:14,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:14,049 INFO L225 Difference]: With dead ends: 1315 [2022-07-19 16:52:14,049 INFO L226 Difference]: Without dead ends: 732 [2022-07-19 16:52:14,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:52:14,051 INFO L413 NwaCegarLoop]: 828 mSDtfsCounter, 660 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 2207 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 2352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 2207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:14,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 1658 Invalid, 2352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 2207 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 16:52:14,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2022-07-19 16:52:14,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 562. [2022-07-19 16:52:14,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 438 states have (on average 1.6050228310502284) internal successors, (703), 459 states have internal predecessors, (703), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-07-19 16:52:14,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 896 transitions. [2022-07-19 16:52:14,091 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 896 transitions. Word has length 72 [2022-07-19 16:52:14,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:14,092 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 896 transitions. [2022-07-19 16:52:14,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:14,092 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 896 transitions. [2022-07-19 16:52:14,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-19 16:52:14,093 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:14,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:14,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 16:52:14,093 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:14,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:14,093 INFO L85 PathProgramCache]: Analyzing trace with hash 2014302141, now seen corresponding path program 1 times [2022-07-19 16:52:14,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:14,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614879543] [2022-07-19 16:52:14,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:14,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:14,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:14,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:14,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:14,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 16:52:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:14,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:14,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:14,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:52:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:14,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:14,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:14,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614879543] [2022-07-19 16:52:14,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614879543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:14,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:14,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:52:14,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548502983] [2022-07-19 16:52:14,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:14,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:52:14,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:14,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:52:14,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:52:14,339 INFO L87 Difference]: Start difference. First operand 562 states and 896 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:17,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:17,627 INFO L93 Difference]: Finished difference Result 1250 states and 2038 transitions. [2022-07-19 16:52:17,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 16:52:17,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2022-07-19 16:52:17,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:17,631 INFO L225 Difference]: With dead ends: 1250 [2022-07-19 16:52:17,631 INFO L226 Difference]: Without dead ends: 753 [2022-07-19 16:52:17,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:52:17,632 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 709 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 2332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:17,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1633 Invalid, 2332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 16:52:17,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-07-19 16:52:17,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 567. [2022-07-19 16:52:17,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 443 states have (on average 1.5981941309255079) internal successors, (708), 464 states have internal predecessors, (708), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-07-19 16:52:17,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 901 transitions. [2022-07-19 16:52:17,674 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 901 transitions. Word has length 73 [2022-07-19 16:52:17,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:17,675 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 901 transitions. [2022-07-19 16:52:17,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:17,675 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 901 transitions. [2022-07-19 16:52:17,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-19 16:52:17,676 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:17,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:17,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 16:52:17,676 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:17,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:17,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1972759379, now seen corresponding path program 1 times [2022-07-19 16:52:17,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:17,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237937011] [2022-07-19 16:52:17,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:17,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:17,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:17,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:17,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:17,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:52:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:17,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:17,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:17,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:17,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:52:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:17,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:17,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:17,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237937011] [2022-07-19 16:52:17,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237937011] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:17,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:17,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 16:52:17,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455368647] [2022-07-19 16:52:17,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:17,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 16:52:17,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:17,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 16:52:17,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:52:17,977 INFO L87 Difference]: Start difference. First operand 567 states and 901 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-19 16:52:24,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:24,976 INFO L93 Difference]: Finished difference Result 2063 states and 3453 transitions. [2022-07-19 16:52:24,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 16:52:24,977 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 74 [2022-07-19 16:52:24,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:24,983 INFO L225 Difference]: With dead ends: 2063 [2022-07-19 16:52:24,983 INFO L226 Difference]: Without dead ends: 1574 [2022-07-19 16:52:24,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:52:24,985 INFO L413 NwaCegarLoop]: 876 mSDtfsCounter, 3519 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 5446 mSolverCounterSat, 1075 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3610 SdHoareTripleChecker+Valid, 2461 SdHoareTripleChecker+Invalid, 6521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1075 IncrementalHoareTripleChecker+Valid, 5446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:24,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3610 Valid, 2461 Invalid, 6521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1075 Valid, 5446 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-07-19 16:52:24,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2022-07-19 16:52:25,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1082. [2022-07-19 16:52:25,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 845 states have (on average 1.6331360946745561) internal successors, (1380), 875 states have internal predecessors, (1380), 192 states have call successors, (192), 43 states have call predecessors, (192), 44 states have return successors, (194), 176 states have call predecessors, (194), 187 states have call successors, (194) [2022-07-19 16:52:25,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1766 transitions. [2022-07-19 16:52:25,093 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1766 transitions. Word has length 74 [2022-07-19 16:52:25,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:25,093 INFO L495 AbstractCegarLoop]: Abstraction has 1082 states and 1766 transitions. [2022-07-19 16:52:25,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-19 16:52:25,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1766 transitions. [2022-07-19 16:52:25,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-19 16:52:25,096 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:25,097 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:25,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 16:52:25,097 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:25,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:25,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1522445330, now seen corresponding path program 1 times [2022-07-19 16:52:25,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:25,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975996816] [2022-07-19 16:52:25,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:25,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:52:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:52:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:52:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:52:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:52:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:52:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,734 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:52:25,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:25,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975996816] [2022-07-19 16:52:25,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975996816] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:25,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:25,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-19 16:52:25,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137414193] [2022-07-19 16:52:25,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:25,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-19 16:52:25,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:25,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-19 16:52:25,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2022-07-19 16:52:25,736 INFO L87 Difference]: Start difference. First operand 1082 states and 1766 transitions. Second operand has 23 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 15 states have internal predecessors, (87), 5 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 8 states have call predecessors, (14), 5 states have call successors, (14) [2022-07-19 16:52:43,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:43,466 INFO L93 Difference]: Finished difference Result 3868 states and 6697 transitions. [2022-07-19 16:52:43,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-19 16:52:43,466 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 15 states have internal predecessors, (87), 5 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 8 states have call predecessors, (14), 5 states have call successors, (14) Word has length 126 [2022-07-19 16:52:43,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:43,478 INFO L225 Difference]: With dead ends: 3868 [2022-07-19 16:52:43,478 INFO L226 Difference]: Without dead ends: 2864 [2022-07-19 16:52:43,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=517, Invalid=3023, Unknown=0, NotChecked=0, Total=3540 [2022-07-19 16:52:43,483 INFO L413 NwaCegarLoop]: 1141 mSDtfsCounter, 4547 mSDsluCounter, 4987 mSDsCounter, 0 mSdLazyCounter, 22511 mSolverCounterSat, 2617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4547 SdHoareTripleChecker+Valid, 6128 SdHoareTripleChecker+Invalid, 25128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2617 IncrementalHoareTripleChecker+Valid, 22511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:43,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4547 Valid, 6128 Invalid, 25128 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2617 Valid, 22511 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2022-07-19 16:52:43,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2864 states. [2022-07-19 16:52:43,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2864 to 1595. [2022-07-19 16:52:43,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1232 states have (on average 1.5892857142857142) internal successors, (1958), 1262 states have internal predecessors, (1958), 284 states have call successors, (284), 61 states have call predecessors, (284), 78 states have return successors, (365), 282 states have call predecessors, (365), 279 states have call successors, (365) [2022-07-19 16:52:43,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2607 transitions. [2022-07-19 16:52:43,684 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2607 transitions. Word has length 126 [2022-07-19 16:52:43,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:43,684 INFO L495 AbstractCegarLoop]: Abstraction has 1595 states and 2607 transitions. [2022-07-19 16:52:43,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 15 states have internal predecessors, (87), 5 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 8 states have call predecessors, (14), 5 states have call successors, (14) [2022-07-19 16:52:43,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2607 transitions. [2022-07-19 16:52:43,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-19 16:52:43,687 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:43,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:43,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 16:52:43,688 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:43,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:43,688 INFO L85 PathProgramCache]: Analyzing trace with hash -603531315, now seen corresponding path program 1 times [2022-07-19 16:52:43,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:43,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718205577] [2022-07-19 16:52:43,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:43,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:43,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:43,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:43,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:43,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:52:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:43,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:43,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:44,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:44,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:44,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:44,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:52:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:44,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 16:52:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:44,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:44,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:44,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 16:52:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:44,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 16:52:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:44,220 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-19 16:52:44,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:44,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718205577] [2022-07-19 16:52:44,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718205577] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:52:44,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187654209] [2022-07-19 16:52:44,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:44,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:52:44,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:52:44,222 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:52:44,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 16:52:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:44,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 1705 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 16:52:44,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:52:44,639 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 16:52:44,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:52:44,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187654209] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:44,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:52:44,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17] total 20 [2022-07-19 16:52:44,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128303958] [2022-07-19 16:52:44,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:44,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:52:44,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:44,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:52:44,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2022-07-19 16:52:44,641 INFO L87 Difference]: Start difference. First operand 1595 states and 2607 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:52:45,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:45,099 INFO L93 Difference]: Finished difference Result 3152 states and 5288 transitions. [2022-07-19 16:52:45,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:52:45,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 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 128 [2022-07-19 16:52:45,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:45,107 INFO L225 Difference]: With dead ends: 3152 [2022-07-19 16:52:45,108 INFO L226 Difference]: Without dead ends: 1635 [2022-07-19 16:52:45,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-07-19 16:52:45,115 INFO L413 NwaCegarLoop]: 859 mSDtfsCounter, 827 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 2220 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:45,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 2220 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 16:52:45,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2022-07-19 16:52:45,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 1627. [2022-07-19 16:52:45,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 1260 states have (on average 1.592063492063492) internal successors, (2006), 1290 states have internal predecessors, (2006), 284 states have call successors, (284), 65 states have call predecessors, (284), 82 states have return successors, (353), 282 states have call predecessors, (353), 279 states have call successors, (353) [2022-07-19 16:52:45,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 2643 transitions. [2022-07-19 16:52:45,295 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 2643 transitions. Word has length 128 [2022-07-19 16:52:45,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:45,296 INFO L495 AbstractCegarLoop]: Abstraction has 1627 states and 2643 transitions. [2022-07-19 16:52:45,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:52:45,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 2643 transitions. [2022-07-19 16:52:45,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-19 16:52:45,301 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:45,301 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:45,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 16:52:45,519 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 [2022-07-19 16:52:45,519 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:45,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:45,520 INFO L85 PathProgramCache]: Analyzing trace with hash 109461360, now seen corresponding path program 1 times [2022-07-19 16:52:45,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:45,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209787934] [2022-07-19 16:52:45,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:45,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:52:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:52:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:45,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 16:52:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:46,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:46,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:46,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 16:52:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:46,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 16:52:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:46,056 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-19 16:52:46,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:46,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209787934] [2022-07-19 16:52:46,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209787934] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:46,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:46,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-19 16:52:46,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760669813] [2022-07-19 16:52:46,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:46,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-19 16:52:46,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:46,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-19 16:52:46,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:52:46,058 INFO L87 Difference]: Start difference. First operand 1627 states and 2643 transitions. Second operand has 16 states, 16 states have (on average 5.625) internal successors, (90), 9 states have internal predecessors, (90), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-19 16:53:02,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:53:02,627 INFO L93 Difference]: Finished difference Result 6930 states and 12089 transitions. [2022-07-19 16:53:02,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-19 16:53:02,628 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.625) internal successors, (90), 9 states have internal predecessors, (90), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) Word has length 131 [2022-07-19 16:53:02,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:53:02,662 INFO L225 Difference]: With dead ends: 6930 [2022-07-19 16:53:02,662 INFO L226 Difference]: Without dead ends: 5381 [2022-07-19 16:53:02,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=396, Invalid=1766, Unknown=0, NotChecked=0, Total=2162 [2022-07-19 16:53:02,674 INFO L413 NwaCegarLoop]: 1933 mSDtfsCounter, 7283 mSDsluCounter, 6675 mSDsCounter, 0 mSdLazyCounter, 19211 mSolverCounterSat, 3863 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7283 SdHoareTripleChecker+Valid, 8608 SdHoareTripleChecker+Invalid, 23074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3863 IncrementalHoareTripleChecker+Valid, 19211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-07-19 16:53:02,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7283 Valid, 8608 Invalid, 23074 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3863 Valid, 19211 Invalid, 0 Unknown, 0 Unchecked, 12.6s Time] [2022-07-19 16:53:02,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5381 states. [2022-07-19 16:53:03,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5381 to 4009. [2022-07-19 16:53:03,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4009 states, 3006 states have (on average 1.5888223552894212) internal successors, (4776), 3104 states have internal predecessors, (4776), 802 states have call successors, (802), 126 states have call predecessors, (802), 200 states have return successors, (1208), 821 states have call predecessors, (1208), 797 states have call successors, (1208) [2022-07-19 16:53:03,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4009 states to 4009 states and 6786 transitions. [2022-07-19 16:53:03,161 INFO L78 Accepts]: Start accepts. Automaton has 4009 states and 6786 transitions. Word has length 131 [2022-07-19 16:53:03,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:03,161 INFO L495 AbstractCegarLoop]: Abstraction has 4009 states and 6786 transitions. [2022-07-19 16:53:03,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.625) internal successors, (90), 9 states have internal predecessors, (90), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-19 16:53:03,162 INFO L276 IsEmpty]: Start isEmpty. Operand 4009 states and 6786 transitions. [2022-07-19 16:53:03,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-19 16:53:03,169 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:03,169 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:53:03,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 16:53:03,169 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:03,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:03,170 INFO L85 PathProgramCache]: Analyzing trace with hash 447458893, now seen corresponding path program 1 times [2022-07-19 16:53:03,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:03,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087019005] [2022-07-19 16:53:03,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:03,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:03,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:03,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:03,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:03,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:53:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:03,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:03,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:03,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:03,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:03,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:03,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 16:53:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:03,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 16:53:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:03,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:03,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:03,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 16:53:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:03,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 16:53:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:03,623 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 16:53:03,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:03,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087019005] [2022-07-19 16:53:03,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087019005] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:53:03,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997506657] [2022-07-19 16:53:03,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:03,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:53:03,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:53:03,625 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:53:03,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 16:53:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:03,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 1709 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 16:53:03,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:53:03,985 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 16:53:03,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:53:03,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997506657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:53:03,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:53:03,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 16 [2022-07-19 16:53:03,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912101017] [2022-07-19 16:53:03,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:53:03,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:53:03,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:03,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:53:03,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:53:03,988 INFO L87 Difference]: Start difference. First operand 4009 states and 6786 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:53:04,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:53:04,791 INFO L93 Difference]: Finished difference Result 7988 states and 13778 transitions. [2022-07-19 16:53:04,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:53:04,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 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 132 [2022-07-19 16:53:04,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:53:04,807 INFO L225 Difference]: With dead ends: 7988 [2022-07-19 16:53:04,807 INFO L226 Difference]: Without dead ends: 4065 [2022-07-19 16:53:04,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-07-19 16:53:04,823 INFO L413 NwaCegarLoop]: 859 mSDtfsCounter, 819 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 2220 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:53:04,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 2220 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 16:53:04,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4065 states. [2022-07-19 16:53:05,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4065 to 4049. [2022-07-19 16:53:05,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4049 states, 3042 states have (on average 1.5950032873109796) internal successors, (4852), 3146 states have internal predecessors, (4852), 802 states have call successors, (802), 134 states have call predecessors, (802), 204 states have return successors, (1154), 811 states have call predecessors, (1154), 797 states have call successors, (1154) [2022-07-19 16:53:05,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4049 states to 4049 states and 6808 transitions. [2022-07-19 16:53:05,286 INFO L78 Accepts]: Start accepts. Automaton has 4049 states and 6808 transitions. Word has length 132 [2022-07-19 16:53:05,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:05,287 INFO L495 AbstractCegarLoop]: Abstraction has 4049 states and 6808 transitions. [2022-07-19 16:53:05,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:53:05,288 INFO L276 IsEmpty]: Start isEmpty. Operand 4049 states and 6808 transitions. [2022-07-19 16:53:05,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-19 16:53:05,296 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:05,296 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:53:05,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 16:53:05,511 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,SelfDestructingSolverStorable20 [2022-07-19 16:53:05,511 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:05,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:05,512 INFO L85 PathProgramCache]: Analyzing trace with hash 264395248, now seen corresponding path program 1 times [2022-07-19 16:53:05,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:05,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232792057] [2022-07-19 16:53:05,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:05,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:05,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:05,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:05,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:05,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:53:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:05,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:05,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:05,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:05,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:06,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:06,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:53:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:06,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:53:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:06,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:06,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:06,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:53:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:06,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:53:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:06,065 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 16:53:06,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:06,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232792057] [2022-07-19 16:53:06,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232792057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:53:06,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:53:06,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-19 16:53:06,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180616490] [2022-07-19 16:53:06,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:53:06,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-19 16:53:06,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:06,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-19 16:53:06,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-07-19 16:53:06,067 INFO L87 Difference]: Start difference. First operand 4049 states and 6808 transitions. Second operand has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 10 states have internal predecessors, (92), 5 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (14), 9 states have call predecessors, (14), 5 states have call successors, (14) [2022-07-19 16:53:24,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:53:24,296 INFO L93 Difference]: Finished difference Result 13257 states and 23883 transitions. [2022-07-19 16:53:24,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-19 16:53:24,298 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 10 states have internal predecessors, (92), 5 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (14), 9 states have call predecessors, (14), 5 states have call successors, (14) Word has length 135 [2022-07-19 16:53:24,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:53:24,341 INFO L225 Difference]: With dead ends: 13257 [2022-07-19 16:53:24,341 INFO L226 Difference]: Without dead ends: 9294 [2022-07-19 16:53:24,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=483, Invalid=2067, Unknown=0, NotChecked=0, Total=2550 [2022-07-19 16:53:24,364 INFO L413 NwaCegarLoop]: 1876 mSDtfsCounter, 5461 mSDsluCounter, 7005 mSDsCounter, 0 mSdLazyCounter, 19247 mSolverCounterSat, 2745 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5467 SdHoareTripleChecker+Valid, 8881 SdHoareTripleChecker+Invalid, 21992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2745 IncrementalHoareTripleChecker+Valid, 19247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-07-19 16:53:24,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5467 Valid, 8881 Invalid, 21992 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2745 Valid, 19247 Invalid, 0 Unknown, 0 Unchecked, 13.8s Time] [2022-07-19 16:53:24,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9294 states. [2022-07-19 16:53:25,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9294 to 6455. [2022-07-19 16:53:25,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6455 states, 4883 states have (on average 1.5975834527954127) internal successors, (7801), 5023 states have internal predecessors, (7801), 1249 states have call successors, (1249), 199 states have call predecessors, (1249), 322 states have return successors, (1994), 1290 states have call predecessors, (1994), 1244 states have call successors, (1994) [2022-07-19 16:53:25,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6455 states to 6455 states and 11044 transitions. [2022-07-19 16:53:25,244 INFO L78 Accepts]: Start accepts. Automaton has 6455 states and 11044 transitions. Word has length 135 [2022-07-19 16:53:25,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:25,244 INFO L495 AbstractCegarLoop]: Abstraction has 6455 states and 11044 transitions. [2022-07-19 16:53:25,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 10 states have internal predecessors, (92), 5 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (14), 9 states have call predecessors, (14), 5 states have call successors, (14) [2022-07-19 16:53:25,245 INFO L276 IsEmpty]: Start isEmpty. Operand 6455 states and 11044 transitions. [2022-07-19 16:53:25,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-19 16:53:25,252 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:25,252 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, 1, 1, 1, 1, 1] [2022-07-19 16:53:25,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 16:53:25,253 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:25,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:25,253 INFO L85 PathProgramCache]: Analyzing trace with hash -453550113, now seen corresponding path program 1 times [2022-07-19 16:53:25,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:25,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34869825] [2022-07-19 16:53:25,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:25,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:25,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:25,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:25,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:25,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:53:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:25,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:25,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:25,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:25,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:25,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:25,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:53:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:25,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:53:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:25,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:25,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:25,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:53:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:25,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:53:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:25,686 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 16:53:25,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:25,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34869825] [2022-07-19 16:53:25,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34869825] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:53:25,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:53:25,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 16:53:25,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103403087] [2022-07-19 16:53:25,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:53:25,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 16:53:25,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:25,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 16:53:25,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:53:25,689 INFO L87 Difference]: Start difference. First operand 6455 states and 11044 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-19 16:53:30,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:53:30,619 INFO L93 Difference]: Finished difference Result 12315 states and 21301 transitions. [2022-07-19 16:53:30,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 16:53:30,620 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2022-07-19 16:53:30,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:53:30,688 INFO L225 Difference]: With dead ends: 12315 [2022-07-19 16:53:30,688 INFO L226 Difference]: Without dead ends: 8077 [2022-07-19 16:53:30,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:53:30,698 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 1429 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 2673 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 2398 SdHoareTripleChecker+Invalid, 3105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 2673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:53:30,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 2398 Invalid, 3105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 2673 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-19 16:53:30,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8077 states. [2022-07-19 16:53:31,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8077 to 6461. [2022-07-19 16:53:31,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6461 states, 4889 states have (on average 1.5968500715892822) internal successors, (7807), 5029 states have internal predecessors, (7807), 1249 states have call successors, (1249), 199 states have call predecessors, (1249), 322 states have return successors, (1994), 1290 states have call predecessors, (1994), 1244 states have call successors, (1994) [2022-07-19 16:53:31,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6461 states to 6461 states and 11050 transitions. [2022-07-19 16:53:31,500 INFO L78 Accepts]: Start accepts. Automaton has 6461 states and 11050 transitions. Word has length 135 [2022-07-19 16:53:31,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:31,500 INFO L495 AbstractCegarLoop]: Abstraction has 6461 states and 11050 transitions. [2022-07-19 16:53:31,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-19 16:53:31,500 INFO L276 IsEmpty]: Start isEmpty. Operand 6461 states and 11050 transitions. [2022-07-19 16:53:31,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-19 16:53:31,508 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:31,509 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] [2022-07-19 16:53:31,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 16:53:31,509 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:31,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:31,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1254932238, now seen corresponding path program 1 times [2022-07-19 16:53:31,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:31,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169490057] [2022-07-19 16:53:31,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:31,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:53:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:53:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 16:53:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 16:53:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 16:53:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,997 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-19 16:53:31,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:31,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169490057] [2022-07-19 16:53:31,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169490057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:53:31,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:53:31,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 16:53:31,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964024973] [2022-07-19 16:53:31,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:53:31,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 16:53:31,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:31,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 16:53:31,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:53:32,000 INFO L87 Difference]: Start difference. First operand 6461 states and 11050 transitions. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-19 16:53:39,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:53:39,259 INFO L93 Difference]: Finished difference Result 16469 states and 29223 transitions. [2022-07-19 16:53:39,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 16:53:39,260 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 141 [2022-07-19 16:53:39,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:53:39,309 INFO L225 Difference]: With dead ends: 16469 [2022-07-19 16:53:39,309 INFO L226 Difference]: Without dead ends: 10122 [2022-07-19 16:53:39,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2022-07-19 16:53:39,335 INFO L413 NwaCegarLoop]: 1068 mSDtfsCounter, 4843 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 4450 mSolverCounterSat, 2275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4843 SdHoareTripleChecker+Valid, 3752 SdHoareTripleChecker+Invalid, 6725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2275 IncrementalHoareTripleChecker+Valid, 4450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-19 16:53:39,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4843 Valid, 3752 Invalid, 6725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2275 Valid, 4450 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-19 16:53:39,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10122 states. [2022-07-19 16:53:40,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10122 to 6919. [2022-07-19 16:53:40,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6919 states, 5225 states have (on average 1.5894736842105264) internal successors, (8305), 5368 states have internal predecessors, (8305), 1348 states have call successors, (1348), 199 states have call predecessors, (1348), 345 states have return successors, (2281), 1414 states have call predecessors, (2281), 1343 states have call successors, (2281) [2022-07-19 16:53:40,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6919 states to 6919 states and 11934 transitions. [2022-07-19 16:53:40,340 INFO L78 Accepts]: Start accepts. Automaton has 6919 states and 11934 transitions. Word has length 141 [2022-07-19 16:53:40,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:40,341 INFO L495 AbstractCegarLoop]: Abstraction has 6919 states and 11934 transitions. [2022-07-19 16:53:40,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-19 16:53:40,341 INFO L276 IsEmpty]: Start isEmpty. Operand 6919 states and 11934 transitions. [2022-07-19 16:53:40,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-19 16:53:40,349 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:40,349 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:53:40,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 16:53:40,349 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:40,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:40,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1498358035, now seen corresponding path program 1 times [2022-07-19 16:53:40,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:40,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639074883] [2022-07-19 16:53:40,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:40,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 16:53:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:53:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:53:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:53:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:53:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:40,779 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 16:53:40,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:40,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639074883] [2022-07-19 16:53:40,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639074883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:53:40,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:53:40,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 16:53:40,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063039890] [2022-07-19 16:53:40,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:53:40,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 16:53:40,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:40,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 16:53:40,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:53:40,781 INFO L87 Difference]: Start difference. First operand 6919 states and 11934 transitions. Second operand has 11 states, 10 states have (on average 9.9) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-19 16:53:46,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:53:46,894 INFO L93 Difference]: Finished difference Result 11123 states and 19572 transitions. [2022-07-19 16:53:46,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 16:53:46,895 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.9) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 141 [2022-07-19 16:53:46,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:53:46,918 INFO L225 Difference]: With dead ends: 11123 [2022-07-19 16:53:46,918 INFO L226 Difference]: Without dead ends: 5893 [2022-07-19 16:53:46,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-07-19 16:53:46,934 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 990 mSDsluCounter, 2822 mSDsCounter, 0 mSdLazyCounter, 5267 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 3750 SdHoareTripleChecker+Invalid, 5557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 5267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-19 16:53:46,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 3750 Invalid, 5557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 5267 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-19 16:53:46,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5893 states. [2022-07-19 16:53:47,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5893 to 1633. [2022-07-19 16:53:47,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1268 states have (on average 1.5938485804416405) internal successors, (2021), 1308 states have internal predecessors, (2021), 274 states have call successors, (274), 69 states have call predecessors, (274), 90 states have return successors, (345), 266 states have call predecessors, (345), 269 states have call successors, (345) [2022-07-19 16:53:47,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 2640 transitions. [2022-07-19 16:53:47,249 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 2640 transitions. Word has length 141 [2022-07-19 16:53:47,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:47,249 INFO L495 AbstractCegarLoop]: Abstraction has 1633 states and 2640 transitions. [2022-07-19 16:53:47,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.9) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-19 16:53:47,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 2640 transitions. [2022-07-19 16:53:47,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-19 16:53:47,251 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:47,252 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] [2022-07-19 16:53:47,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 16:53:47,252 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:47,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:47,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1931254711, now seen corresponding path program 1 times [2022-07-19 16:53:47,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:47,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333251734] [2022-07-19 16:53:47,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:47,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:47,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:47,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:47,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:47,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:53:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:47,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:47,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:47,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:47,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:47,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:47,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:53:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:47,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:47,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:53:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:47,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:47,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:47,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 16:53:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:47,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 16:53:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:47,754 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-19 16:53:47,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:47,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333251734] [2022-07-19 16:53:47,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333251734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:53:47,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:53:47,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 16:53:47,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255396715] [2022-07-19 16:53:47,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:53:47,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 16:53:47,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:47,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 16:53:47,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:53:47,757 INFO L87 Difference]: Start difference. First operand 1633 states and 2640 transitions. Second operand has 11 states, 11 states have (on average 9.0) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 16:53:58,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:53:58,340 INFO L93 Difference]: Finished difference Result 5871 states and 9897 transitions. [2022-07-19 16:53:58,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-19 16:53:58,341 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.0) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 144 [2022-07-19 16:53:58,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:53:58,355 INFO L225 Difference]: With dead ends: 5871 [2022-07-19 16:53:58,355 INFO L226 Difference]: Without dead ends: 4312 [2022-07-19 16:53:58,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=222, Invalid=708, Unknown=0, NotChecked=0, Total=930 [2022-07-19 16:53:58,360 INFO L413 NwaCegarLoop]: 957 mSDtfsCounter, 3371 mSDsluCounter, 2727 mSDsCounter, 0 mSdLazyCounter, 6200 mSolverCounterSat, 1289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3452 SdHoareTripleChecker+Valid, 3684 SdHoareTripleChecker+Invalid, 7489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1289 IncrementalHoareTripleChecker+Valid, 6200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-07-19 16:53:58,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3452 Valid, 3684 Invalid, 7489 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1289 Valid, 6200 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-07-19 16:53:58,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4312 states. [2022-07-19 16:53:58,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4312 to 3177. [2022-07-19 16:53:58,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3177 states, 2466 states have (on average 1.602189781021898) internal successors, (3951), 2541 states have internal predecessors, (3951), 530 states have call successors, (530), 131 states have call predecessors, (530), 180 states have return successors, (710), 526 states have call predecessors, (710), 525 states have call successors, (710) [2022-07-19 16:53:58,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3177 states to 3177 states and 5191 transitions. [2022-07-19 16:53:58,950 INFO L78 Accepts]: Start accepts. Automaton has 3177 states and 5191 transitions. Word has length 144 [2022-07-19 16:53:58,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:58,951 INFO L495 AbstractCegarLoop]: Abstraction has 3177 states and 5191 transitions. [2022-07-19 16:53:58,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.0) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 16:53:58,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3177 states and 5191 transitions. [2022-07-19 16:53:58,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-19 16:53:58,953 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:58,953 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, 1, 1, 1] [2022-07-19 16:53:58,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 16:53:58,953 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:58,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:58,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1137126514, now seen corresponding path program 1 times [2022-07-19 16:53:58,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:58,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126350638] [2022-07-19 16:53:58,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:58,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:59,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:59,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:59,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:59,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:53:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:59,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:59,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:59,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:59,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:59,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:59,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:53:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:59,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:59,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:53:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:59,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:59,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:59,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 16:53:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:59,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 16:53:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:59,422 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-19 16:53:59,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:59,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126350638] [2022-07-19 16:53:59,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126350638] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:53:59,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142264329] [2022-07-19 16:53:59,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:59,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:53:59,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:53:59,424 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:53:59,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 16:53:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:59,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 1751 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 16:53:59,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:53:59,664 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-19 16:53:59,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:53:59,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142264329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:53:59,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:53:59,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 11 [2022-07-19 16:53:59,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492642662] [2022-07-19 16:53:59,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:53:59,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 16:53:59,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:59,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 16:53:59,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:53:59,667 INFO L87 Difference]: Start difference. First operand 3177 states and 5191 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:54:00,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:54:00,734 INFO L93 Difference]: Finished difference Result 8775 states and 14493 transitions. [2022-07-19 16:54:00,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 16:54:00,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 148 [2022-07-19 16:54:00,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:54:00,751 INFO L225 Difference]: With dead ends: 8775 [2022-07-19 16:54:00,751 INFO L226 Difference]: Without dead ends: 5672 [2022-07-19 16:54:00,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 178 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:54:00,759 INFO L413 NwaCegarLoop]: 1029 mSDtfsCounter, 795 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1749 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 [2022-07-19 16:54:00,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 1749 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:54:00,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2022-07-19 16:54:01,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 5625. [2022-07-19 16:54:01,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5625 states, 4364 states have (on average 1.5939505041246562) internal successors, (6956), 4502 states have internal predecessors, (6956), 934 states have call successors, (934), 243 states have call predecessors, (934), 326 states have return successors, (1258), 923 states have call predecessors, (1258), 929 states have call successors, (1258) [2022-07-19 16:54:01,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5625 states to 5625 states and 9148 transitions. [2022-07-19 16:54:01,757 INFO L78 Accepts]: Start accepts. Automaton has 5625 states and 9148 transitions. Word has length 148 [2022-07-19 16:54:01,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:54:01,757 INFO L495 AbstractCegarLoop]: Abstraction has 5625 states and 9148 transitions. [2022-07-19 16:54:01,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:54:01,757 INFO L276 IsEmpty]: Start isEmpty. Operand 5625 states and 9148 transitions. [2022-07-19 16:54:01,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-19 16:54:01,760 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:54:01,760 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:54:01,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-19 16:54:01,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:54:01,964 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:54:01,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:54:01,964 INFO L85 PathProgramCache]: Analyzing trace with hash -406632560, now seen corresponding path program 1 times [2022-07-19 16:54:01,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:54:01,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206701957] [2022-07-19 16:54:01,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:01,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:54:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:02,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:02,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:02,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:02,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:54:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:02,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:54:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:02,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:02,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:02,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:02,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:02,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:02,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:54:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:02,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:02,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:54:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:02,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:02,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:02,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:54:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:02,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 16:54:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:02,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 16:54:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:02,391 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-19 16:54:02,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:54:02,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206701957] [2022-07-19 16:54:02,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206701957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:54:02,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:54:02,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 16:54:02,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294812902] [2022-07-19 16:54:02,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:54:02,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 16:54:02,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:54:02,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 16:54:02,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:54:02,394 INFO L87 Difference]: Start difference. First operand 5625 states and 9148 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-19 16:54:13,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:54:13,744 INFO L93 Difference]: Finished difference Result 14642 states and 24556 transitions. [2022-07-19 16:54:13,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 16:54:13,745 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 153 [2022-07-19 16:54:13,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:54:13,776 INFO L225 Difference]: With dead ends: 14642 [2022-07-19 16:54:13,776 INFO L226 Difference]: Without dead ends: 9872 [2022-07-19 16:54:13,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:54:13,790 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 4670 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 3539 mSolverCounterSat, 1837 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4751 SdHoareTripleChecker+Valid, 1927 SdHoareTripleChecker+Invalid, 5376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1837 IncrementalHoareTripleChecker+Valid, 3539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:54:13,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4751 Valid, 1927 Invalid, 5376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1837 Valid, 3539 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-07-19 16:54:13,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9872 states. [2022-07-19 16:54:15,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9872 to 7566. [2022-07-19 16:54:15,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7566 states, 5871 states have (on average 1.57911769715551) internal successors, (9271), 6047 states have internal predecessors, (9271), 1236 states have call successors, (1236), 351 states have call predecessors, (1236), 458 states have return successors, (1734), 1222 states have call predecessors, (1734), 1231 states have call successors, (1734) [2022-07-19 16:54:15,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7566 states to 7566 states and 12241 transitions. [2022-07-19 16:54:15,220 INFO L78 Accepts]: Start accepts. Automaton has 7566 states and 12241 transitions. Word has length 153 [2022-07-19 16:54:15,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:54:15,220 INFO L495 AbstractCegarLoop]: Abstraction has 7566 states and 12241 transitions. [2022-07-19 16:54:15,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-19 16:54:15,220 INFO L276 IsEmpty]: Start isEmpty. Operand 7566 states and 12241 transitions. [2022-07-19 16:54:15,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 16:54:15,223 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:54:15,223 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:54:15,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 16:54:15,223 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:54:15,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:54:15,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1720609510, now seen corresponding path program 1 times [2022-07-19 16:54:15,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:54:15,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326260958] [2022-07-19 16:54:15,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:15,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:54:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:15,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:15,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:15,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:54:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:15,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:54:15,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:15,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:15,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:15,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:15,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:15,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:15,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:54:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:15,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:15,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:54:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:15,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:15,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:15,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:54:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:15,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 16:54:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:15,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 16:54:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:15,746 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-19 16:54:15,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:54:15,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326260958] [2022-07-19 16:54:15,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326260958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:54:15,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:54:15,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-19 16:54:15,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064627264] [2022-07-19 16:54:15,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:54:15,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-19 16:54:15,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:54:15,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-19 16:54:15,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-07-19 16:54:15,748 INFO L87 Difference]: Start difference. First operand 7566 states and 12241 transitions. Second operand has 17 states, 16 states have (on average 6.8125) internal successors, (109), 11 states have internal predecessors, (109), 5 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-19 16:54:27,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:54:27,594 INFO L93 Difference]: Finished difference Result 20585 states and 34401 transitions. [2022-07-19 16:54:27,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-19 16:54:27,595 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.8125) internal successors, (109), 11 states have internal predecessors, (109), 5 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 156 [2022-07-19 16:54:27,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:54:27,639 INFO L225 Difference]: With dead ends: 20585 [2022-07-19 16:54:27,639 INFO L226 Difference]: Without dead ends: 12698 [2022-07-19 16:54:27,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=279, Invalid=1281, Unknown=0, NotChecked=0, Total=1560 [2022-07-19 16:54:27,662 INFO L413 NwaCegarLoop]: 1125 mSDtfsCounter, 5144 mSDsluCounter, 5190 mSDsCounter, 0 mSdLazyCounter, 10545 mSolverCounterSat, 1568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5172 SdHoareTripleChecker+Valid, 6315 SdHoareTripleChecker+Invalid, 12113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1568 IncrementalHoareTripleChecker+Valid, 10545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:54:27,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5172 Valid, 6315 Invalid, 12113 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1568 Valid, 10545 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-07-19 16:54:27,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12698 states. [2022-07-19 16:54:29,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12698 to 10136. [2022-07-19 16:54:29,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10136 states, 7899 states have (on average 1.5405747562982657) internal successors, (12169), 8105 states have internal predecessors, (12169), 1574 states have call successors, (1574), 519 states have call predecessors, (1574), 662 states have return successors, (2336), 1566 states have call predecessors, (2336), 1569 states have call successors, (2336) [2022-07-19 16:54:29,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10136 states to 10136 states and 16079 transitions. [2022-07-19 16:54:29,740 INFO L78 Accepts]: Start accepts. Automaton has 10136 states and 16079 transitions. Word has length 156 [2022-07-19 16:54:29,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:54:29,740 INFO L495 AbstractCegarLoop]: Abstraction has 10136 states and 16079 transitions. [2022-07-19 16:54:29,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.8125) internal successors, (109), 11 states have internal predecessors, (109), 5 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-19 16:54:29,740 INFO L276 IsEmpty]: Start isEmpty. Operand 10136 states and 16079 transitions. [2022-07-19 16:54:29,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-19 16:54:29,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:54:29,743 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:54:29,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 16:54:29,743 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:54:29,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:54:29,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1886737253, now seen corresponding path program 1 times [2022-07-19 16:54:29,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:54:29,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145049240] [2022-07-19 16:54:29,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:29,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:54:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:29,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:29,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:29,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:54:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:29,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:54:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:29,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:29,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:30,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:30,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:30,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:30,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:54:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:30,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:30,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:54:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:30,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:30,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:30,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:54:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:30,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:54:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:30,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 16:54:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:30,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 16:54:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:30,197 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 16:54:30,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:54:30,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145049240] [2022-07-19 16:54:30,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145049240] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:54:30,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:54:30,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 16:54:30,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50667430] [2022-07-19 16:54:30,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:54:30,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 16:54:30,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:54:30,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 16:54:30,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:54:30,199 INFO L87 Difference]: Start difference. First operand 10136 states and 16079 transitions. Second operand has 14 states, 14 states have (on average 7.928571428571429) internal successors, (111), 9 states have internal predecessors, (111), 3 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-19 16:54:41,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:54:41,244 INFO L93 Difference]: Finished difference Result 22912 states and 37841 transitions. [2022-07-19 16:54:41,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-19 16:54:41,247 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.928571428571429) internal successors, (111), 9 states have internal predecessors, (111), 3 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 160 [2022-07-19 16:54:41,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:54:41,295 INFO L225 Difference]: With dead ends: 22912 [2022-07-19 16:54:41,295 INFO L226 Difference]: Without dead ends: 12834 [2022-07-19 16:54:41,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=252, Invalid=1080, Unknown=0, NotChecked=0, Total=1332 [2022-07-19 16:54:41,328 INFO L413 NwaCegarLoop]: 1070 mSDtfsCounter, 2953 mSDsluCounter, 4109 mSDsCounter, 0 mSdLazyCounter, 8389 mSolverCounterSat, 1093 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2994 SdHoareTripleChecker+Valid, 5179 SdHoareTripleChecker+Invalid, 9482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1093 IncrementalHoareTripleChecker+Valid, 8389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-07-19 16:54:41,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2994 Valid, 5179 Invalid, 9482 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1093 Valid, 8389 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-07-19 16:54:41,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12834 states. [2022-07-19 16:54:43,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12834 to 10272. [2022-07-19 16:54:43,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10272 states, 8001 states have (on average 1.5306836645419322) internal successors, (12247), 8207 states have internal predecessors, (12247), 1574 states have call successors, (1574), 553 states have call predecessors, (1574), 696 states have return successors, (2328), 1566 states have call predecessors, (2328), 1569 states have call successors, (2328) [2022-07-19 16:54:43,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10272 states to 10272 states and 16149 transitions. [2022-07-19 16:54:43,409 INFO L78 Accepts]: Start accepts. Automaton has 10272 states and 16149 transitions. Word has length 160 [2022-07-19 16:54:43,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:54:43,409 INFO L495 AbstractCegarLoop]: Abstraction has 10272 states and 16149 transitions. [2022-07-19 16:54:43,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.928571428571429) internal successors, (111), 9 states have internal predecessors, (111), 3 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-19 16:54:43,409 INFO L276 IsEmpty]: Start isEmpty. Operand 10272 states and 16149 transitions. [2022-07-19 16:54:43,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-19 16:54:43,412 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:54:43,412 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:54:43,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-19 16:54:43,412 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:54:43,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:54:43,412 INFO L85 PathProgramCache]: Analyzing trace with hash -336768626, now seen corresponding path program 1 times [2022-07-19 16:54:43,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:54:43,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128355104] [2022-07-19 16:54:43,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:43,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:54:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:43,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:43,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:43,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:54:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:43,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:54:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:43,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:43,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:43,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:43,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:43,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:43,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:54:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:43,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:43,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:54:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:43,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:43,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:43,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:54:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:43,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:54:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:43,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 16:54:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:43,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 16:54:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:43,875 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-19 16:54:43,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:54:43,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128355104] [2022-07-19 16:54:43,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128355104] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:54:43,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:54:43,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 16:54:43,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512586783] [2022-07-19 16:54:43,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:54:43,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 16:54:43,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:54:43,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 16:54:43,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-19 16:54:43,877 INFO L87 Difference]: Start difference. First operand 10272 states and 16149 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 8 states have internal predecessors, (109), 5 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-07-19 16:54:57,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:54:57,719 INFO L93 Difference]: Finished difference Result 24262 states and 39375 transitions. [2022-07-19 16:54:57,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-19 16:54:57,720 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 8 states have internal predecessors, (109), 5 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 161 [2022-07-19 16:54:57,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:54:57,775 INFO L225 Difference]: With dead ends: 24262 [2022-07-19 16:54:57,775 INFO L226 Difference]: Without dead ends: 14829 [2022-07-19 16:54:57,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=249, Invalid=807, Unknown=0, NotChecked=0, Total=1056 [2022-07-19 16:54:57,804 INFO L413 NwaCegarLoop]: 901 mSDtfsCounter, 3927 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 7249 mSolverCounterSat, 1381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3999 SdHoareTripleChecker+Valid, 3722 SdHoareTripleChecker+Invalid, 8630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1381 IncrementalHoareTripleChecker+Valid, 7249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:54:57,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3999 Valid, 3722 Invalid, 8630 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1381 Valid, 7249 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-07-19 16:54:57,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14829 states. [2022-07-19 16:55:00,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14829 to 11962. [2022-07-19 16:55:00,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11962 states, 9365 states have (on average 1.5101975440469835) internal successors, (14143), 9597 states have internal predecessors, (14143), 1752 states have call successors, (1752), 687 states have call predecessors, (1752), 844 states have return successors, (2634), 1732 states have call predecessors, (2634), 1747 states have call successors, (2634) [2022-07-19 16:55:00,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11962 states to 11962 states and 18529 transitions. [2022-07-19 16:55:00,286 INFO L78 Accepts]: Start accepts. Automaton has 11962 states and 18529 transitions. Word has length 161 [2022-07-19 16:55:00,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:55:00,286 INFO L495 AbstractCegarLoop]: Abstraction has 11962 states and 18529 transitions. [2022-07-19 16:55:00,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 8 states have internal predecessors, (109), 5 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-07-19 16:55:00,287 INFO L276 IsEmpty]: Start isEmpty. Operand 11962 states and 18529 transitions. [2022-07-19 16:55:00,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-19 16:55:00,289 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:00,289 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, 1, 1, 1, 1, 1] [2022-07-19 16:55:00,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-19 16:55:00,290 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:00,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:00,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1678071209, now seen corresponding path program 1 times [2022-07-19 16:55:00,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:00,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627183532] [2022-07-19 16:55:00,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:00,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:00,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:55:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:00,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:00,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:55:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:00,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:55:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:00,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:00,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:00,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:55:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:00,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:00,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:00,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:55:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:00,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:00,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:55:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:00,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:00,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:00,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:55:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:00,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:55:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:00,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 16:55:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:00,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:55:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:00,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 16:55:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:00,730 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 16:55:00,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:55:00,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627183532] [2022-07-19 16:55:00,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627183532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:55:00,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:55:00,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 16:55:00,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116980305] [2022-07-19 16:55:00,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:55:00,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 16:55:00,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:55:00,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 16:55:00,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:55:00,732 INFO L87 Difference]: Start difference. First operand 11962 states and 18529 transitions. Second operand has 13 states, 13 states have (on average 8.461538461538462) internal successors, (110), 8 states have internal predecessors, (110), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18)