./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec14_product23.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 8e3e095c3e35754b69c5b770f69d2f55696576eebdd6e61f09ab7280f663a93f --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 16:55:27,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 16:55:27,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 16:55:27,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 16:55:27,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 16:55:27,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 16:55:27,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 16:55:27,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 16:55:27,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 16:55:27,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 16:55:27,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 16:55:27,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 16:55:27,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 16:55:27,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 16:55:27,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 16:55:27,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 16:55:27,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 16:55:27,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 16:55:27,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 16:55:27,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 16:55:27,847 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 16:55:27,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 16:55:27,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 16:55:27,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 16:55:27,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 16:55:27,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 16:55:27,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 16:55:27,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 16:55:27,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 16:55:27,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 16:55:27,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 16:55:27,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 16:55:27,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 16:55:27,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 16:55:27,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 16:55:27,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 16:55:27,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 16:55:27,860 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 16:55:27,860 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 16:55:27,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 16:55:27,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 16:55:27,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 16:55:27,863 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 16:55:27,885 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 16:55:27,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 16:55:27,885 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 16:55:27,885 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 16:55:27,887 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 16:55:27,887 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 16:55:27,889 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 16:55:27,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 16:55:27,889 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 16:55:27,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 16:55:27,889 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 16:55:27,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 16:55:27,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 16:55:27,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 16:55:27,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 16:55:27,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 16:55:27,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 16:55:27,891 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 16:55:27,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 16:55:27,891 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 16:55:27,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 16:55:27,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 16:55:27,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 16:55:27,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 16:55:27,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 16:55:27,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 16:55:27,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 16:55:27,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 16:55:27,893 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 16:55:27,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 16:55:27,893 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 16:55:27,893 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 16:55:27,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 16:55:27,893 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e3e095c3e35754b69c5b770f69d2f55696576eebdd6e61f09ab7280f663a93f [2022-07-22 16:55:28,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 16:55:28,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 16:55:28,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 16:55:28,088 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 16:55:28,089 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 16:55:28,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c [2022-07-22 16:55:28,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/384e3c9df/7cd6ae2b209249a086ae68d54cb16db3/FLAGa46d590db [2022-07-22 16:55:28,522 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 16:55:28,522 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c [2022-07-22 16:55:28,535 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/384e3c9df/7cd6ae2b209249a086ae68d54cb16db3/FLAGa46d590db [2022-07-22 16:55:28,896 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/384e3c9df/7cd6ae2b209249a086ae68d54cb16db3 [2022-07-22 16:55:28,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 16:55:28,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 16:55:28,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 16:55:28,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 16:55:28,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 16:55:28,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:55:28" (1/1) ... [2022-07-22 16:55:28,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22be13e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:28, skipping insertion in model container [2022-07-22 16:55:28,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:55:28" (1/1) ... [2022-07-22 16:55:28,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 16:55:28,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 16:55:29,129 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_spec14_product23.cil.c[8585,8598] [2022-07-22 16:55:29,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 16:55:29,292 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 16:55:29,316 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_spec14_product23.cil.c[8585,8598] [2022-07-22 16:55:29,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 16:55:29,420 INFO L208 MainTranslator]: Completed translation [2022-07-22 16:55:29,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:29 WrapperNode [2022-07-22 16:55:29,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 16:55:29,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 16:55:29,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 16:55:29,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 16:55:29,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:29" (1/1) ... [2022-07-22 16:55:29,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:29" (1/1) ... [2022-07-22 16:55:29,478 INFO L137 Inliner]: procedures = 93, calls = 340, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 854 [2022-07-22 16:55:29,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 16:55:29,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 16:55:29,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 16:55:29,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 16:55:29,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:29" (1/1) ... [2022-07-22 16:55:29,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:29" (1/1) ... [2022-07-22 16:55:29,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:29" (1/1) ... [2022-07-22 16:55:29,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:29" (1/1) ... [2022-07-22 16:55:29,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:29" (1/1) ... [2022-07-22 16:55:29,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:29" (1/1) ... [2022-07-22 16:55:29,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:29" (1/1) ... [2022-07-22 16:55:29,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 16:55:29,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 16:55:29,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 16:55:29,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 16:55:29,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:29" (1/1) ... [2022-07-22 16:55:29,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 16:55:29,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:55:29,570 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 16:55:29,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 16:55:29,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 16:55:29,602 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-07-22 16:55:29,602 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-07-22 16:55:29,602 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-22 16:55:29,602 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-22 16:55:29,603 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-22 16:55:29,603 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-22 16:55:29,606 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-22 16:55:29,606 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-22 16:55:29,606 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-07-22 16:55:29,607 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-07-22 16:55:29,607 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-22 16:55:29,607 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-22 16:55:29,607 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-07-22 16:55:29,607 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-07-22 16:55:29,607 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-22 16:55:29,607 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-22 16:55:29,607 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-22 16:55:29,607 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-22 16:55:29,608 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-22 16:55:29,608 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-22 16:55:29,608 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-22 16:55:29,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-22 16:55:29,608 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-22 16:55:29,608 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-22 16:55:29,608 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-22 16:55:29,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-22 16:55:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-22 16:55:29,609 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-22 16:55:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-22 16:55:29,609 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-22 16:55:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-22 16:55:29,609 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-22 16:55:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-22 16:55:29,610 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-22 16:55:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-22 16:55:29,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-22 16:55:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-22 16:55:29,610 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-22 16:55:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 16:55:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-22 16:55:29,611 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-22 16:55:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-22 16:55:29,611 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-22 16:55:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-22 16:55:29,611 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-22 16:55:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-22 16:55:29,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-22 16:55:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-07-22 16:55:29,611 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-07-22 16:55:29,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 16:55:29,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 16:55:29,612 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-22 16:55:29,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-22 16:55:29,768 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 16:55:29,769 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 16:55:30,431 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 16:55:30,446 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 16:55:30,446 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 16:55:30,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:55:30 BoogieIcfgContainer [2022-07-22 16:55:30,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 16:55:30,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 16:55:30,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 16:55:30,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 16:55:30,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 04:55:28" (1/3) ... [2022-07-22 16:55:30,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651bee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:55:30, skipping insertion in model container [2022-07-22 16:55:30,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:29" (2/3) ... [2022-07-22 16:55:30,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651bee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:55:30, skipping insertion in model container [2022-07-22 16:55:30,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:55:30" (3/3) ... [2022-07-22 16:55:30,454 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product23.cil.c [2022-07-22 16:55:30,465 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 16:55:30,465 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 16:55:30,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 16:55:30,528 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@48171c7c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@27456259 [2022-07-22 16:55:30,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 16:55:30,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 559 states, 433 states have (on average 1.6651270207852193) internal successors, (721), 449 states have internal predecessors, (721), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 97 states have call predecessors, (99), 99 states have call successors, (99) [2022-07-22 16:55:30,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-22 16:55:30,554 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:30,555 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:55:30,555 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:30,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:30,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1816535566, now seen corresponding path program 1 times [2022-07-22 16:55:30,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:30,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081074872] [2022-07-22 16:55:30,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:30,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:30,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:30,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:30,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:30,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 16:55:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:30,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:30,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:55:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:30,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 16:55:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:31,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:31,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:31,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:55:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:31,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 16:55:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:31,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 16:55:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:31,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:31,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 16:55:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:55:31,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:31,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081074872] [2022-07-22 16:55:31,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081074872] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:31,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:31,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:55:31,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049007879] [2022-07-22 16:55:31,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:31,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:55:31,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:31,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:55:31,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:55:31,079 INFO L87 Difference]: Start difference. First operand has 559 states, 433 states have (on average 1.6651270207852193) internal successors, (721), 449 states have internal predecessors, (721), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 97 states have call predecessors, (99), 99 states have call successors, (99) 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, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:55:34,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:34,099 INFO L93 Difference]: Finished difference Result 1315 states and 2194 transitions. [2022-07-22 16:55:34,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 16:55:34,101 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, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 103 [2022-07-22 16:55:34,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:34,113 INFO L225 Difference]: With dead ends: 1315 [2022-07-22 16:55:34,114 INFO L226 Difference]: Without dead ends: 752 [2022-07-22 16:55:34,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:55:34,125 INFO L413 NwaCegarLoop]: 899 mSDtfsCounter, 1369 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 2492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:34,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1416 Valid, 1825 Invalid, 2492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 2054 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 16:55:34,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-07-22 16:55:34,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 554. [2022-07-22 16:55:34,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 429 states have (on average 1.655011655011655) internal successors, (710), 444 states have internal predecessors, (710), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-22 16:55:34,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 907 transitions. [2022-07-22 16:55:34,251 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 907 transitions. Word has length 103 [2022-07-22 16:55:34,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:34,252 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 907 transitions. [2022-07-22 16:55:34,252 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, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:55:34,252 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 907 transitions. [2022-07-22 16:55:34,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 16:55:34,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:34,257 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:55:34,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 16:55:34,257 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:34,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:34,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1386883550, now seen corresponding path program 1 times [2022-07-22 16:55:34,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:34,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798293189] [2022-07-22 16:55:34,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:34,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:34,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:34,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:34,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:55:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:34,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 16:55:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:34,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:34,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:55:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:34,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 16:55:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:34,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:34,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:34,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:55:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:34,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 16:55:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:34,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 16:55:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:34,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:34,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 16:55:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:34,419 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:55:34,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:34,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798293189] [2022-07-22 16:55:34,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798293189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:34,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:34,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:55:34,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722881356] [2022-07-22 16:55:34,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:34,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:55:34,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:34,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:55:34,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:55:34,423 INFO L87 Difference]: Start difference. First operand 554 states and 907 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:55:36,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:36,810 INFO L93 Difference]: Finished difference Result 1289 states and 2121 transitions. [2022-07-22 16:55:36,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:55:36,811 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2022-07-22 16:55:36,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:36,818 INFO L225 Difference]: With dead ends: 1289 [2022-07-22 16:55:36,818 INFO L226 Difference]: Without dead ends: 752 [2022-07-22 16:55:36,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:55:36,827 INFO L413 NwaCegarLoop]: 876 mSDtfsCounter, 1360 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 2058 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1407 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 2492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:36,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1407 Valid, 1733 Invalid, 2492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 2058 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 16:55:36,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-07-22 16:55:36,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 554. [2022-07-22 16:55:36,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 429 states have (on average 1.6526806526806528) internal successors, (709), 444 states have internal predecessors, (709), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-22 16:55:36,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 906 transitions. [2022-07-22 16:55:36,891 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 906 transitions. Word has length 104 [2022-07-22 16:55:36,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:36,891 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 906 transitions. [2022-07-22 16:55:36,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:55:36,892 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 906 transitions. [2022-07-22 16:55:36,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 16:55:36,894 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:36,894 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:55:36,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 16:55:36,894 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:36,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:36,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1009573522, now seen corresponding path program 1 times [2022-07-22 16:55:36,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:36,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390518369] [2022-07-22 16:55:36,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:36,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:36,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:36,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:36,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:55:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:36,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 16:55:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:36,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:36,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 16:55:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:36,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 16:55:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:36,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:37,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:37,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:55:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:37,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 16:55:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:37,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 16:55:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:37,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:37,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 16:55:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:37,013 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:55:37,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:37,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390518369] [2022-07-22 16:55:37,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390518369] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:37,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:37,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:55:37,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246597123] [2022-07-22 16:55:37,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:37,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:55:37,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:37,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:55:37,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:55:37,016 INFO L87 Difference]: Start difference. First operand 554 states and 906 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:55:39,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:39,550 INFO L93 Difference]: Finished difference Result 1289 states and 2120 transitions. [2022-07-22 16:55:39,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:55:39,551 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2022-07-22 16:55:39,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:39,555 INFO L225 Difference]: With dead ends: 1289 [2022-07-22 16:55:39,555 INFO L226 Difference]: Without dead ends: 752 [2022-07-22 16:55:39,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:55:39,563 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 1351 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 2055 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 2489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:39,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1398 Valid, 1748 Invalid, 2489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 2055 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 16:55:39,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-07-22 16:55:39,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 554. [2022-07-22 16:55:39,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 429 states have (on average 1.6503496503496504) internal successors, (708), 444 states have internal predecessors, (708), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-22 16:55:39,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 905 transitions. [2022-07-22 16:55:39,604 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 905 transitions. Word has length 105 [2022-07-22 16:55:39,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:39,605 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 905 transitions. [2022-07-22 16:55:39,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:55:39,606 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 905 transitions. [2022-07-22 16:55:39,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 16:55:39,611 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:39,611 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:55:39,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 16:55:39,612 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:39,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:39,612 INFO L85 PathProgramCache]: Analyzing trace with hash 2040102174, now seen corresponding path program 1 times [2022-07-22 16:55:39,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:39,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835104217] [2022-07-22 16:55:39,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:39,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:39,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:39,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:39,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 16:55:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:39,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 16:55:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:39,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:39,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 16:55:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:39,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 16:55:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:39,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:39,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:39,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:55:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:39,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 16:55:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:39,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 16:55:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:39,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:39,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 16:55:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:39,774 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:55:39,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:39,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835104217] [2022-07-22 16:55:39,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835104217] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:39,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:39,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:55:39,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786248737] [2022-07-22 16:55:39,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:39,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:55:39,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:39,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:55:39,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:55:39,777 INFO L87 Difference]: Start difference. First operand 554 states and 905 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:55:42,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:42,049 INFO L93 Difference]: Finished difference Result 1289 states and 2119 transitions. [2022-07-22 16:55:42,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:55:42,050 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2022-07-22 16:55:42,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:42,053 INFO L225 Difference]: With dead ends: 1289 [2022-07-22 16:55:42,053 INFO L226 Difference]: Without dead ends: 752 [2022-07-22 16:55:42,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:55:42,061 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 1347 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 2046 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 2482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 2046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:42,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1394 Valid, 1747 Invalid, 2482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 2046 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 16:55:42,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-07-22 16:55:42,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 554. [2022-07-22 16:55:42,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 429 states have (on average 1.648018648018648) internal successors, (707), 444 states have internal predecessors, (707), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-22 16:55:42,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 904 transitions. [2022-07-22 16:55:42,096 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 904 transitions. Word has length 106 [2022-07-22 16:55:42,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:42,097 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 904 transitions. [2022-07-22 16:55:42,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:55:42,097 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 904 transitions. [2022-07-22 16:55:42,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-22 16:55:42,099 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:42,100 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:55:42,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 16:55:42,100 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:42,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:42,100 INFO L85 PathProgramCache]: Analyzing trace with hash 2033767658, now seen corresponding path program 1 times [2022-07-22 16:55:42,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:42,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703976649] [2022-07-22 16:55:42,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:42,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:55:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 16:55:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 16:55:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 16:55:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:55:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 16:55:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 16:55:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 16:55:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,238 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:55:42,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:42,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703976649] [2022-07-22 16:55:42,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703976649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:42,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:42,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:55:42,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554384476] [2022-07-22 16:55:42,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:42,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:55:42,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:42,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:55:42,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:55:42,240 INFO L87 Difference]: Start difference. First operand 554 states and 904 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:55:44,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:44,646 INFO L93 Difference]: Finished difference Result 1289 states and 2118 transitions. [2022-07-22 16:55:44,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:55:44,647 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2022-07-22 16:55:44,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:44,650 INFO L225 Difference]: With dead ends: 1289 [2022-07-22 16:55:44,650 INFO L226 Difference]: Without dead ends: 752 [2022-07-22 16:55:44,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:55:44,653 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 1363 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 2039 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1410 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 2476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 2039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:44,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1410 Valid, 1671 Invalid, 2476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 2039 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 16:55:44,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-07-22 16:55:44,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 554. [2022-07-22 16:55:44,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 429 states have (on average 1.6456876456876457) internal successors, (706), 444 states have internal predecessors, (706), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-22 16:55:44,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 903 transitions. [2022-07-22 16:55:44,686 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 903 transitions. Word has length 107 [2022-07-22 16:55:44,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:44,686 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 903 transitions. [2022-07-22 16:55:44,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:55:44,687 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 903 transitions. [2022-07-22 16:55:44,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-22 16:55:44,689 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:44,689 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:55:44,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 16:55:44,689 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:44,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:44,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1780397082, now seen corresponding path program 1 times [2022-07-22 16:55:44,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:44,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697825963] [2022-07-22 16:55:44,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:44,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:44,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:44,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:44,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:55:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:44,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 16:55:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:44,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:44,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 16:55:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:44,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:55:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:44,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:44,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:44,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:55:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:44,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 16:55:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:44,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 16:55:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:44,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:44,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 16:55:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:44,814 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:55:44,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:44,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697825963] [2022-07-22 16:55:44,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697825963] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:44,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:44,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:55:44,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268014635] [2022-07-22 16:55:44,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:44,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:55:44,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:44,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:55:44,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:55:44,816 INFO L87 Difference]: Start difference. First operand 554 states and 903 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:55:47,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:47,174 INFO L93 Difference]: Finished difference Result 1314 states and 2162 transitions. [2022-07-22 16:55:47,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 16:55:47,175 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2022-07-22 16:55:47,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:47,179 INFO L225 Difference]: With dead ends: 1314 [2022-07-22 16:55:47,179 INFO L226 Difference]: Without dead ends: 781 [2022-07-22 16:55:47,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:55:47,182 INFO L413 NwaCegarLoop]: 848 mSDtfsCounter, 1405 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 2013 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 2518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 2013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:47,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1452 Valid, 1712 Invalid, 2518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 2013 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 16:55:47,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2022-07-22 16:55:47,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 574. [2022-07-22 16:55:47,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 448 states have (on average 1.640625) internal successors, (735), 463 states have internal predecessors, (735), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-22 16:55:47,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 932 transitions. [2022-07-22 16:55:47,224 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 932 transitions. Word has length 108 [2022-07-22 16:55:47,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:47,224 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 932 transitions. [2022-07-22 16:55:47,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:55:47,224 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 932 transitions. [2022-07-22 16:55:47,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 16:55:47,227 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:47,227 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:55:47,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 16:55:47,227 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:47,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:47,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1328279333, now seen corresponding path program 1 times [2022-07-22 16:55:47,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:47,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805494185] [2022-07-22 16:55:47,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:47,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:47,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:47,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:47,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:55:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:47,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 16:55:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:47,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:47,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 16:55:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:47,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 16:55:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:47,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:47,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:47,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:55:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:47,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 16:55:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:47,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 16:55:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:47,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:47,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 16:55:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:47,348 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:55:47,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:47,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805494185] [2022-07-22 16:55:47,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805494185] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:47,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:47,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:55:47,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235097165] [2022-07-22 16:55:47,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:47,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:55:47,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:47,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:55:47,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:55:47,350 INFO L87 Difference]: Start difference. First operand 574 states and 932 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:55:49,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:49,784 INFO L93 Difference]: Finished difference Result 1298 states and 2113 transitions. [2022-07-22 16:55:49,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 16:55:49,785 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2022-07-22 16:55:49,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:49,789 INFO L225 Difference]: With dead ends: 1298 [2022-07-22 16:55:49,789 INFO L226 Difference]: Without dead ends: 781 [2022-07-22 16:55:49,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:55:49,792 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 1370 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 2011 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1417 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 2510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 2011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:49,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1417 Valid, 1693 Invalid, 2510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 2011 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 16:55:49,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2022-07-22 16:55:49,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 574. [2022-07-22 16:55:49,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 448 states have (on average 1.6294642857142858) internal successors, (730), 463 states have internal predecessors, (730), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-22 16:55:49,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 927 transitions. [2022-07-22 16:55:49,843 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 927 transitions. Word has length 109 [2022-07-22 16:55:49,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:49,843 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 927 transitions. [2022-07-22 16:55:49,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:55:49,844 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 927 transitions. [2022-07-22 16:55:49,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-22 16:55:49,846 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:49,846 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:55:49,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 16:55:49,846 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:49,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:49,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1553712897, now seen corresponding path program 1 times [2022-07-22 16:55:49,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:49,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928971010] [2022-07-22 16:55:49,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:49,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:49,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:49,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:49,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:55:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:49,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 16:55:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:49,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:49,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 16:55:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:49,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:55:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:49,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:49,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:49,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:55:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:49,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:55:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:49,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 16:55:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:49,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:49,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 16:55:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:49,974 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:55:49,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:49,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928971010] [2022-07-22 16:55:49,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928971010] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:49,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:49,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:55:49,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423530437] [2022-07-22 16:55:49,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:49,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:55:49,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:49,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:55:49,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:55:49,976 INFO L87 Difference]: Start difference. First operand 574 states and 927 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:55:52,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:52,494 INFO L93 Difference]: Finished difference Result 1298 states and 2108 transitions. [2022-07-22 16:55:52,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 16:55:52,494 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2022-07-22 16:55:52,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:52,498 INFO L225 Difference]: With dead ends: 1298 [2022-07-22 16:55:52,498 INFO L226 Difference]: Without dead ends: 781 [2022-07-22 16:55:52,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:55:52,500 INFO L413 NwaCegarLoop]: 828 mSDtfsCounter, 1374 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 2479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:52,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 1672 Invalid, 2479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [491 Valid, 1988 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 16:55:52,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2022-07-22 16:55:52,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 574. [2022-07-22 16:55:52,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 448 states have (on average 1.6183035714285714) internal successors, (725), 463 states have internal predecessors, (725), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-22 16:55:52,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 922 transitions. [2022-07-22 16:55:52,536 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 922 transitions. Word has length 110 [2022-07-22 16:55:52,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:52,536 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 922 transitions. [2022-07-22 16:55:52,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:55:52,537 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 922 transitions. [2022-07-22 16:55:52,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 16:55:52,539 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:52,539 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:55:52,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 16:55:52,539 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:52,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:52,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1813012661, now seen corresponding path program 1 times [2022-07-22 16:55:52,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:52,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692464843] [2022-07-22 16:55:52,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:52,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:52,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:52,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:52,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:55:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:52,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:55:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:52,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:52,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 16:55:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:52,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 16:55:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:52,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:52,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:52,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:55:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:52,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 16:55:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:52,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 16:55:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:52,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:52,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 16:55:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:52,724 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:55:52,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:52,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692464843] [2022-07-22 16:55:52,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692464843] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:52,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:52,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:55:52,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441388867] [2022-07-22 16:55:52,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:52,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:55:52,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:52,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:55:52,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:55:52,727 INFO L87 Difference]: Start difference. First operand 574 states and 922 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:55:55,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:55,210 INFO L93 Difference]: Finished difference Result 1325 states and 2142 transitions. [2022-07-22 16:55:55,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 16:55:55,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2022-07-22 16:55:55,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:55,214 INFO L225 Difference]: With dead ends: 1325 [2022-07-22 16:55:55,214 INFO L226 Difference]: Without dead ends: 814 [2022-07-22 16:55:55,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:55:55,216 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 1404 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 2434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:55,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 1704 Invalid, 2434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 16:55:55,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-22 16:55:55,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 578. [2022-07-22 16:55:55,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 452 states have (on average 1.6128318584070795) internal successors, (729), 467 states have internal predecessors, (729), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-22 16:55:55,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 926 transitions. [2022-07-22 16:55:55,254 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 926 transitions. Word has length 111 [2022-07-22 16:55:55,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:55,255 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 926 transitions. [2022-07-22 16:55:55,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:55:55,255 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 926 transitions. [2022-07-22 16:55:55,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 16:55:55,257 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:55,257 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:55:55,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 16:55:55,258 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:55,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:55,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1842564586, now seen corresponding path program 1 times [2022-07-22 16:55:55,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:55,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446705303] [2022-07-22 16:55:55,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:55,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:55,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:55,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:55,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:55:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:55,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:55:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:55,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:55,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 16:55:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:55,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 16:55:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:55,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:55,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:55,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:55:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:55,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 16:55:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:55,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 16:55:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:55,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:55,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 16:55:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:55:55,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:55,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446705303] [2022-07-22 16:55:55,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446705303] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:55,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:55,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:55:55,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353187559] [2022-07-22 16:55:55,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:55,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:55:55,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:55,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:55:55,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:55:55,383 INFO L87 Difference]: Start difference. First operand 578 states and 926 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:55:57,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:57,392 INFO L93 Difference]: Finished difference Result 1308 states and 2112 transitions. [2022-07-22 16:55:57,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 16:55:57,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2022-07-22 16:55:57,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:57,396 INFO L225 Difference]: With dead ends: 1308 [2022-07-22 16:55:57,396 INFO L226 Difference]: Without dead ends: 787 [2022-07-22 16:55:57,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:55:57,408 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 1368 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 1980 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 2459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 1980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:57,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 1686 Invalid, 2459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 1980 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 16:55:57,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-07-22 16:55:57,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 578. [2022-07-22 16:55:57,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 452 states have (on average 1.6017699115044248) internal successors, (724), 467 states have internal predecessors, (724), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-22 16:55:57,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 921 transitions. [2022-07-22 16:55:57,444 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 921 transitions. Word has length 111 [2022-07-22 16:55:57,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:57,444 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 921 transitions. [2022-07-22 16:55:57,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:55:57,445 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 921 transitions. [2022-07-22 16:55:57,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 16:55:57,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:57,447 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:55:57,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 16:55:57,447 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:57,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:57,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1552622241, now seen corresponding path program 1 times [2022-07-22 16:55:57,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:57,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984000041] [2022-07-22 16:55:57,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:57,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:55:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:55:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 16:55:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 16:55:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:55:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 16:55:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 16:55:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 16:55:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,581 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:55:57,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:57,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984000041] [2022-07-22 16:55:57,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984000041] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:57,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:57,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:55:57,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691915842] [2022-07-22 16:55:57,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:57,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:55:57,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:57,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:55:57,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:55:57,583 INFO L87 Difference]: Start difference. First operand 578 states and 921 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:55:59,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:59,658 INFO L93 Difference]: Finished difference Result 1333 states and 2141 transitions. [2022-07-22 16:55:59,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 16:55:59,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-07-22 16:55:59,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:59,662 INFO L225 Difference]: With dead ends: 1333 [2022-07-22 16:55:59,662 INFO L226 Difference]: Without dead ends: 820 [2022-07-22 16:55:59,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:55:59,664 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 1408 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 2399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:59,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 1714 Invalid, 2399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 1959 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 16:55:59,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2022-07-22 16:55:59,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 584. [2022-07-22 16:55:59,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 458 states have (on average 1.5938864628820961) internal successors, (730), 473 states have internal predecessors, (730), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-22 16:55:59,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 927 transitions. [2022-07-22 16:55:59,732 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 927 transitions. Word has length 112 [2022-07-22 16:55:59,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:59,733 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 927 transitions. [2022-07-22 16:55:59,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:55:59,733 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 927 transitions. [2022-07-22 16:55:59,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 16:55:59,735 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:59,735 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:55:59,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 16:55:59,735 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:59,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:59,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1998259740, now seen corresponding path program 1 times [2022-07-22 16:55:59,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:59,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883343728] [2022-07-22 16:55:59,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:59,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:55:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:55:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 16:55:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 16:55:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:55:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 16:55:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 16:55:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 16:55:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,880 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:55:59,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:59,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883343728] [2022-07-22 16:55:59,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883343728] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:59,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:59,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:55:59,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972769174] [2022-07-22 16:55:59,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:59,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:55:59,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:59,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:55:59,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:55:59,882 INFO L87 Difference]: Start difference. First operand 584 states and 927 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:01,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:01,695 INFO L93 Difference]: Finished difference Result 1323 states and 2121 transitions. [2022-07-22 16:56:01,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 16:56:01,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-07-22 16:56:01,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:01,698 INFO L225 Difference]: With dead ends: 1323 [2022-07-22 16:56:01,698 INFO L226 Difference]: Without dead ends: 796 [2022-07-22 16:56:01,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:56:01,700 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 1371 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 1970 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1418 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 2438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 1970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:01,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1418 Valid, 1682 Invalid, 2438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 1970 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 16:56:01,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-07-22 16:56:01,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 584. [2022-07-22 16:56:01,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 458 states have (on average 1.5829694323144106) internal successors, (725), 473 states have internal predecessors, (725), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-22 16:56:01,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 922 transitions. [2022-07-22 16:56:01,740 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 922 transitions. Word has length 112 [2022-07-22 16:56:01,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:01,740 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 922 transitions. [2022-07-22 16:56:01,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:01,740 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 922 transitions. [2022-07-22 16:56:01,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 16:56:01,742 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:01,742 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:01,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 16:56:01,743 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:01,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:01,743 INFO L85 PathProgramCache]: Analyzing trace with hash -322221360, now seen corresponding path program 1 times [2022-07-22 16:56:01,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:01,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608544816] [2022-07-22 16:56:01,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:01,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:56:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 16:56:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 16:56:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:56:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 16:56:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 16:56:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 16:56:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,853 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:56:01,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:01,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608544816] [2022-07-22 16:56:01,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608544816] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:01,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:01,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:56:01,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918193817] [2022-07-22 16:56:01,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:01,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:56:01,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:01,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:56:01,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:56:01,855 INFO L87 Difference]: Start difference. First operand 584 states and 922 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:04,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:04,072 INFO L93 Difference]: Finished difference Result 1345 states and 2144 transitions. [2022-07-22 16:56:04,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 16:56:04,073 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-07-22 16:56:04,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:04,076 INFO L225 Difference]: With dead ends: 1345 [2022-07-22 16:56:04,076 INFO L226 Difference]: Without dead ends: 829 [2022-07-22 16:56:04,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:56:04,078 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 1399 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 2387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 1946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:04,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1446 Valid, 1692 Invalid, 2387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 1946 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 16:56:04,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-07-22 16:56:04,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 592. [2022-07-22 16:56:04,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 466 states have (on average 1.5729613733905579) internal successors, (733), 481 states have internal predecessors, (733), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-22 16:56:04,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 930 transitions. [2022-07-22 16:56:04,119 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 930 transitions. Word has length 113 [2022-07-22 16:56:04,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:04,119 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 930 transitions. [2022-07-22 16:56:04,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:04,119 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 930 transitions. [2022-07-22 16:56:04,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 16:56:04,121 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:04,121 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:04,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 16:56:04,122 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:04,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:04,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1738993839, now seen corresponding path program 1 times [2022-07-22 16:56:04,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:04,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188106296] [2022-07-22 16:56:04,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:04,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:56:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:04,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 16:56:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 16:56:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:56:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 16:56:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 16:56:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 16:56:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,271 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:56:04,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:04,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188106296] [2022-07-22 16:56:04,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188106296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:04,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:04,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 16:56:04,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900660736] [2022-07-22 16:56:04,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:04,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 16:56:04,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:04,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 16:56:04,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:56:04,273 INFO L87 Difference]: Start difference. First operand 592 states and 930 transitions. Second operand has 9 states, 8 states have (on average 8.5) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 16:56:06,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:06,764 INFO L93 Difference]: Finished difference Result 1354 states and 2151 transitions. [2022-07-22 16:56:06,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 16:56:06,764 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 113 [2022-07-22 16:56:06,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:06,768 INFO L225 Difference]: With dead ends: 1354 [2022-07-22 16:56:06,768 INFO L226 Difference]: Without dead ends: 837 [2022-07-22 16:56:06,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:56:06,770 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 1424 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 4292 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 4736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 4292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:06,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1471 Valid, 2696 Invalid, 4736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 4292 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 16:56:06,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2022-07-22 16:56:06,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 603. [2022-07-22 16:56:06,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 474 states have (on average 1.5675105485232068) internal successors, (743), 491 states have internal predecessors, (743), 100 states have call successors, (100), 27 states have call predecessors, (100), 28 states have return successors, (101), 97 states have call predecessors, (101), 99 states have call successors, (101) [2022-07-22 16:56:06,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 944 transitions. [2022-07-22 16:56:06,815 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 944 transitions. Word has length 113 [2022-07-22 16:56:06,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:06,815 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 944 transitions. [2022-07-22 16:56:06,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 16:56:06,815 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 944 transitions. [2022-07-22 16:56:06,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 16:56:06,817 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:06,817 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:06,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 16:56:06,818 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:06,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:06,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1755437904, now seen corresponding path program 1 times [2022-07-22 16:56:06,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:06,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254075185] [2022-07-22 16:56:06,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:06,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:56:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 16:56:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 16:56:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:56:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 16:56:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 16:56:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 16:56:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,935 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:56:06,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:06,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254075185] [2022-07-22 16:56:06,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254075185] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:06,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:06,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:56:06,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510936309] [2022-07-22 16:56:06,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:06,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:56:06,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:06,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:56:06,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:56:06,937 INFO L87 Difference]: Start difference. First operand 603 states and 944 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:08,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:08,761 INFO L93 Difference]: Finished difference Result 1404 states and 2215 transitions. [2022-07-22 16:56:08,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 16:56:08,761 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-07-22 16:56:08,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:08,764 INFO L225 Difference]: With dead ends: 1404 [2022-07-22 16:56:08,764 INFO L226 Difference]: Without dead ends: 798 [2022-07-22 16:56:08,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:56:08,766 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 1329 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 1980 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 2417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 1980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:08,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 1709 Invalid, 2417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 1980 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 16:56:08,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-07-22 16:56:08,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 584. [2022-07-22 16:56:08,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 458 states have (on average 1.5720524017467248) internal successors, (720), 473 states have internal predecessors, (720), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-22 16:56:08,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 917 transitions. [2022-07-22 16:56:08,808 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 917 transitions. Word has length 113 [2022-07-22 16:56:08,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:08,808 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 917 transitions. [2022-07-22 16:56:08,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:08,809 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 917 transitions. [2022-07-22 16:56:08,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 16:56:08,811 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:08,811 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:08,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 16:56:08,811 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:08,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:08,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1443141306, now seen corresponding path program 1 times [2022-07-22 16:56:08,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:08,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058032212] [2022-07-22 16:56:08,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:08,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 16:56:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 16:56:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 16:56:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:56:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 16:56:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 16:56:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 16:56:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,923 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:56:08,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:08,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058032212] [2022-07-22 16:56:08,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058032212] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:08,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:08,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:56:08,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592305817] [2022-07-22 16:56:08,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:08,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:56:08,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:08,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:56:08,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:56:08,927 INFO L87 Difference]: Start difference. First operand 584 states and 917 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:11,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:11,257 INFO L93 Difference]: Finished difference Result 1351 states and 2140 transitions. [2022-07-22 16:56:11,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 16:56:11,258 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-07-22 16:56:11,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:11,261 INFO L225 Difference]: With dead ends: 1351 [2022-07-22 16:56:11,261 INFO L226 Difference]: Without dead ends: 831 [2022-07-22 16:56:11,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:56:11,263 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 1374 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 2371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:11,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 1684 Invalid, 2371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 16:56:11,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2022-07-22 16:56:11,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 594. [2022-07-22 16:56:11,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 468 states have (on average 1.5598290598290598) internal successors, (730), 483 states have internal predecessors, (730), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-22 16:56:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 927 transitions. [2022-07-22 16:56:11,316 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 927 transitions. Word has length 114 [2022-07-22 16:56:11,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:11,316 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 927 transitions. [2022-07-22 16:56:11,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:11,316 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 927 transitions. [2022-07-22 16:56:11,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-22 16:56:11,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:11,318 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:11,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 16:56:11,318 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:11,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:11,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1429498275, now seen corresponding path program 1 times [2022-07-22 16:56:11,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:11,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80473788] [2022-07-22 16:56:11,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:11,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 16:56:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 16:56:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:56:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 16:56:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 16:56:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 16:56:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,434 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:56:11,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:11,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80473788] [2022-07-22 16:56:11,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80473788] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:11,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:11,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:56:11,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981754521] [2022-07-22 16:56:11,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:11,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:56:11,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:11,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:56:11,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:56:11,436 INFO L87 Difference]: Start difference. First operand 594 states and 927 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:13,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:13,921 INFO L93 Difference]: Finished difference Result 1347 states and 2128 transitions. [2022-07-22 16:56:13,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 16:56:13,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2022-07-22 16:56:13,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:13,924 INFO L225 Difference]: With dead ends: 1347 [2022-07-22 16:56:13,924 INFO L226 Difference]: Without dead ends: 801 [2022-07-22 16:56:13,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:56:13,927 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 1402 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 1914 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 2375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 1914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:13,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 1659 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 1914 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 16:56:13,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-07-22 16:56:13,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 594. [2022-07-22 16:56:13,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 468 states have (on average 1.5512820512820513) internal successors, (726), 483 states have internal predecessors, (726), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-22 16:56:13,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 923 transitions. [2022-07-22 16:56:13,985 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 923 transitions. Word has length 115 [2022-07-22 16:56:13,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:13,985 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 923 transitions. [2022-07-22 16:56:13,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:13,985 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 923 transitions. [2022-07-22 16:56:13,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-22 16:56:13,987 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:13,987 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:13,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 16:56:13,988 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:13,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:13,988 INFO L85 PathProgramCache]: Analyzing trace with hash -906894235, now seen corresponding path program 1 times [2022-07-22 16:56:13,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:13,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617665082] [2022-07-22 16:56:13,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:13,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:14,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:14,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:14,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:14,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:14,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:14,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 16:56:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:14,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 16:56:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:14,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:14,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:14,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:56:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:14,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 16:56:14,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:14,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 16:56:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:14,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:14,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 16:56:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:14,144 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 16:56:14,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:14,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617665082] [2022-07-22 16:56:14,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617665082] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:14,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235949013] [2022-07-22 16:56:14,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:14,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:14,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:14,147 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:56:14,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 16:56:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:14,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 16:56:14,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:14,495 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 16:56:14,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:14,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235949013] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:14,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:14,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-07-22 16:56:14,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820891024] [2022-07-22 16:56:14,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:14,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:56:14,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:14,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:56:14,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:56:14,497 INFO L87 Difference]: Start difference. First operand 594 states and 923 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:56:14,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:14,904 INFO L93 Difference]: Finished difference Result 1120 states and 1795 transitions. [2022-07-22 16:56:14,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:56:14,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 115 [2022-07-22 16:56:14,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:14,907 INFO L225 Difference]: With dead ends: 1120 [2022-07-22 16:56:14,907 INFO L226 Difference]: Without dead ends: 602 [2022-07-22 16:56:14,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:56:14,910 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 830 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:14,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 2146 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 16:56:14,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-07-22 16:56:14,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2022-07-22 16:56:14,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 475 states have (on average 1.5536842105263158) internal successors, (738), 490 states have internal predecessors, (738), 99 states have call successors, (99), 28 states have call predecessors, (99), 27 states have return successors, (99), 96 states have call predecessors, (99), 98 states have call successors, (99) [2022-07-22 16:56:14,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 936 transitions. [2022-07-22 16:56:14,963 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 936 transitions. Word has length 115 [2022-07-22 16:56:14,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:14,963 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 936 transitions. [2022-07-22 16:56:14,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:56:14,964 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 936 transitions. [2022-07-22 16:56:14,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-22 16:56:14,966 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:14,966 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:14,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 16:56:15,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-22 16:56:15,199 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:15,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:15,200 INFO L85 PathProgramCache]: Analyzing trace with hash 766219231, now seen corresponding path program 1 times [2022-07-22 16:56:15,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:15,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070536758] [2022-07-22 16:56:15,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:15,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:15,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 16:56:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 16:56:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:56:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 16:56:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 16:56:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 16:56:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 16:56:15,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:15,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070536758] [2022-07-22 16:56:15,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070536758] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:15,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350810658] [2022-07-22 16:56:15,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:15,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:15,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:15,346 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:56:15,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 16:56:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 16:56:15,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:15,611 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 16:56:15,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:15,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350810658] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:15,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:15,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-07-22 16:56:15,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113679568] [2022-07-22 16:56:15,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:15,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:56:15,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:15,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:56:15,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:56:15,613 INFO L87 Difference]: Start difference. First operand 602 states and 936 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:56:15,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:15,952 INFO L93 Difference]: Finished difference Result 1136 states and 1818 transitions. [2022-07-22 16:56:15,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:56:15,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2022-07-22 16:56:15,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:15,955 INFO L225 Difference]: With dead ends: 1136 [2022-07-22 16:56:15,955 INFO L226 Difference]: Without dead ends: 610 [2022-07-22 16:56:15,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:56:15,958 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 828 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:15,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 2146 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 16:56:15,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-07-22 16:56:16,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2022-07-22 16:56:16,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 482 states have (on average 1.5560165975103735) internal successors, (750), 497 states have internal predecessors, (750), 99 states have call successors, (99), 29 states have call predecessors, (99), 28 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2022-07-22 16:56:16,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 949 transitions. [2022-07-22 16:56:16,030 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 949 transitions. Word has length 118 [2022-07-22 16:56:16,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:16,030 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 949 transitions. [2022-07-22 16:56:16,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:56:16,030 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 949 transitions. [2022-07-22 16:56:16,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-22 16:56:16,032 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:16,032 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:16,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-22 16:56:16,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:16,248 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:16,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:16,248 INFO L85 PathProgramCache]: Analyzing trace with hash -35541343, now seen corresponding path program 1 times [2022-07-22 16:56:16,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:16,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43371714] [2022-07-22 16:56:16,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:16,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:16,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:16,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:16,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:16,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:16,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:16,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:56:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:16,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 16:56:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:16,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:16,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:16,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 16:56:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:16,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 16:56:16,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:16,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 16:56:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:16,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:16,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 16:56:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:16,436 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-22 16:56:16,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:16,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43371714] [2022-07-22 16:56:16,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43371714] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:16,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391375837] [2022-07-22 16:56:16,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:16,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:16,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:16,438 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:56:16,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 16:56:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:16,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 16:56:16,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:16,734 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-22 16:56:16,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:16,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391375837] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:16,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:16,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-07-22 16:56:16,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701749713] [2022-07-22 16:56:16,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:16,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:56:16,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:16,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:56:16,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:56:16,735 INFO L87 Difference]: Start difference. First operand 610 states and 949 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:56:17,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:17,131 INFO L93 Difference]: Finished difference Result 1152 states and 1841 transitions. [2022-07-22 16:56:17,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:56:17,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2022-07-22 16:56:17,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:17,134 INFO L225 Difference]: With dead ends: 1152 [2022-07-22 16:56:17,134 INFO L226 Difference]: Without dead ends: 618 [2022-07-22 16:56:17,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:56:17,136 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 807 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:17,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 2146 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 16:56:17,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2022-07-22 16:56:17,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2022-07-22 16:56:17,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 489 states have (on average 1.5582822085889572) internal successors, (762), 504 states have internal predecessors, (762), 99 states have call successors, (99), 30 states have call predecessors, (99), 29 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2022-07-22 16:56:17,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 962 transitions. [2022-07-22 16:56:17,182 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 962 transitions. Word has length 121 [2022-07-22 16:56:17,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:17,182 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 962 transitions. [2022-07-22 16:56:17,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:56:17,182 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 962 transitions. [2022-07-22 16:56:17,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-22 16:56:17,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:17,184 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:17,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 16:56:17,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:17,406 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:17,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:17,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1250286445, now seen corresponding path program 1 times [2022-07-22 16:56:17,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:17,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054594415] [2022-07-22 16:56:17,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:17,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 16:56:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:56:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 16:56:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 16:56:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 16:56:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 16:56:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,542 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-22 16:56:17,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:17,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054594415] [2022-07-22 16:56:17,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054594415] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:17,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918350420] [2022-07-22 16:56:17,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:17,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:17,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:17,544 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:56:17,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 16:56:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 1225 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 16:56:17,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-22 16:56:17,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:17,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918350420] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:17,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:17,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-07-22 16:56:17,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981126280] [2022-07-22 16:56:17,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:17,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:56:17,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:17,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:56:17,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:56:17,815 INFO L87 Difference]: Start difference. First operand 618 states and 962 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:56:18,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:18,179 INFO L93 Difference]: Finished difference Result 1168 states and 1864 transitions. [2022-07-22 16:56:18,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:56:18,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2022-07-22 16:56:18,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:18,182 INFO L225 Difference]: With dead ends: 1168 [2022-07-22 16:56:18,182 INFO L226 Difference]: Without dead ends: 626 [2022-07-22 16:56:18,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:56:18,185 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 824 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:18,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 2146 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 16:56:18,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2022-07-22 16:56:18,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2022-07-22 16:56:18,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 496 states have (on average 1.560483870967742) internal successors, (774), 511 states have internal predecessors, (774), 99 states have call successors, (99), 31 states have call predecessors, (99), 30 states have return successors, (102), 96 states have call predecessors, (102), 98 states have call successors, (102) [2022-07-22 16:56:18,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 975 transitions. [2022-07-22 16:56:18,256 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 975 transitions. Word has length 124 [2022-07-22 16:56:18,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:18,256 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 975 transitions. [2022-07-22 16:56:18,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:56:18,256 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 975 transitions. [2022-07-22 16:56:18,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-22 16:56:18,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:18,258 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:18,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 16:56:18,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:18,476 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:18,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:18,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1296975139, now seen corresponding path program 1 times [2022-07-22 16:56:18,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:18,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929525897] [2022-07-22 16:56:18,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:18,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:56:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:56:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 16:56:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 16:56:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 16:56:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,708 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 16:56:18,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:18,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929525897] [2022-07-22 16:56:18,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929525897] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:18,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342441221] [2022-07-22 16:56:18,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:18,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:18,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:18,712 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:56:18,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 16:56:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 1228 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-22 16:56:18,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 16:56:19,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:19,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342441221] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:19,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:19,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-22 16:56:19,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933690218] [2022-07-22 16:56:19,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:19,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:56:19,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:19,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:56:19,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:56:19,032 INFO L87 Difference]: Start difference. First operand 626 states and 975 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:56:19,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:19,397 INFO L93 Difference]: Finished difference Result 1732 states and 2791 transitions. [2022-07-22 16:56:19,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:56:19,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2022-07-22 16:56:19,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:19,402 INFO L225 Difference]: With dead ends: 1732 [2022-07-22 16:56:19,402 INFO L226 Difference]: Without dead ends: 1182 [2022-07-22 16:56:19,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:56:19,404 INFO L413 NwaCegarLoop]: 1033 mSDtfsCounter, 800 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 3696 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:19,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 3696 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 16:56:19,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-07-22 16:56:19,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1174. [2022-07-22 16:56:19,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 922 states have (on average 1.5845986984815619) internal successors, (1461), 953 states have internal predecessors, (1461), 192 states have call successors, (192), 59 states have call predecessors, (192), 59 states have return successors, (218), 187 states have call predecessors, (218), 190 states have call successors, (218) [2022-07-22 16:56:19,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1871 transitions. [2022-07-22 16:56:19,500 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1871 transitions. Word has length 127 [2022-07-22 16:56:19,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:19,501 INFO L495 AbstractCegarLoop]: Abstraction has 1174 states and 1871 transitions. [2022-07-22 16:56:19,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:56:19,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1871 transitions. [2022-07-22 16:56:19,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-22 16:56:19,502 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:19,502 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:19,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 16:56:19,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-22 16:56:19,704 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:19,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:19,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1015738056, now seen corresponding path program 1 times [2022-07-22 16:56:19,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:19,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815236388] [2022-07-22 16:56:19,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:19,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:19,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:19,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:19,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:19,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:19,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:19,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:19,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:56:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:19,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:19,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:19,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:56:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:19,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 16:56:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:19,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:56:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:19,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 16:56:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:19,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:19,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 16:56:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 16:56:19,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:19,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815236388] [2022-07-22 16:56:19,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815236388] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:19,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081098985] [2022-07-22 16:56:19,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:19,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:19,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:19,884 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:56:19,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 16:56:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 1245 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 16:56:20,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 16:56:20,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:20,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081098985] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:20,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:20,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-07-22 16:56:20,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562094729] [2022-07-22 16:56:20,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:20,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 16:56:20,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:20,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 16:56:20,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:56:20,135 INFO L87 Difference]: Start difference. First operand 1174 states and 1871 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 16:56:20,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:20,312 INFO L93 Difference]: Finished difference Result 2813 states and 4568 transitions. [2022-07-22 16:56:20,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 16:56:20,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 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 132 [2022-07-22 16:56:20,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:20,318 INFO L225 Difference]: With dead ends: 2813 [2022-07-22 16:56:20,318 INFO L226 Difference]: Without dead ends: 1716 [2022-07-22 16:56:20,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:56:20,322 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 816 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:20,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 2525 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:56:20,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2022-07-22 16:56:20,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1174. [2022-07-22 16:56:20,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 922 states have (on average 1.5835140997830803) internal successors, (1460), 953 states have internal predecessors, (1460), 192 states have call successors, (192), 59 states have call predecessors, (192), 59 states have return successors, (218), 187 states have call predecessors, (218), 190 states have call successors, (218) [2022-07-22 16:56:20,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1870 transitions. [2022-07-22 16:56:20,424 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1870 transitions. Word has length 132 [2022-07-22 16:56:20,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:20,424 INFO L495 AbstractCegarLoop]: Abstraction has 1174 states and 1870 transitions. [2022-07-22 16:56:20,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 16:56:20,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1870 transitions. [2022-07-22 16:56:20,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-22 16:56:20,426 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:20,426 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:20,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 16:56:20,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:20,639 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:20,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:20,640 INFO L85 PathProgramCache]: Analyzing trace with hash -314138182, now seen corresponding path program 1 times [2022-07-22 16:56:20,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:20,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211513031] [2022-07-22 16:56:20,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:20,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:56:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:56:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 16:56:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:56:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 16:56:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 16:56:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,896 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 16:56:20,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:20,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211513031] [2022-07-22 16:56:20,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211513031] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:20,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424567275] [2022-07-22 16:56:20,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:20,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:20,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:20,898 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:56:20,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 16:56:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:21,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 1244 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 16:56:21,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 16:56:21,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:21,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424567275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:21,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:21,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-22 16:56:21,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177542930] [2022-07-22 16:56:21,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:21,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:56:21,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:21,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:56:21,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:56:21,204 INFO L87 Difference]: Start difference. First operand 1174 states and 1870 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 16:56:21,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:21,375 INFO L93 Difference]: Finished difference Result 2932 states and 4755 transitions. [2022-07-22 16:56:21,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:56:21,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (15), 2 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 132 [2022-07-22 16:56:21,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:21,409 INFO L225 Difference]: With dead ends: 2932 [2022-07-22 16:56:21,409 INFO L226 Difference]: Without dead ends: 1836 [2022-07-22 16:56:21,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-07-22 16:56:21,413 INFO L413 NwaCegarLoop]: 1018 mSDtfsCounter, 393 mSDsluCounter, 2911 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 3929 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:21,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 3929 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:56:21,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2022-07-22 16:56:21,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1824. [2022-07-22 16:56:21,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1824 states, 1436 states have (on average 1.5605849582172702) internal successors, (2241), 1471 states have internal predecessors, (2241), 288 states have call successors, (288), 99 states have call predecessors, (288), 99 states have return successors, (365), 279 states have call predecessors, (365), 284 states have call successors, (365) [2022-07-22 16:56:21,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 2894 transitions. [2022-07-22 16:56:21,570 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 2894 transitions. Word has length 132 [2022-07-22 16:56:21,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:21,570 INFO L495 AbstractCegarLoop]: Abstraction has 1824 states and 2894 transitions. [2022-07-22 16:56:21,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 16:56:21,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 2894 transitions. [2022-07-22 16:56:21,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-22 16:56:21,573 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:21,573 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:21,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 16:56:21,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:21,791 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:21,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:21,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1530291908, now seen corresponding path program 1 times [2022-07-22 16:56:21,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:21,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25854359] [2022-07-22 16:56:21,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:21,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:21,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:21,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:21,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:21,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:21,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:21,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:21,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:56:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:21,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:21,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:21,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:56:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:21,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 16:56:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:56:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 16:56:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 16:56:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,010 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 16:56:22,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:22,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25854359] [2022-07-22 16:56:22,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25854359] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:22,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052946832] [2022-07-22 16:56:22,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:22,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:22,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:22,012 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:56:22,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 16:56:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 1241 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:56:22,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:22,274 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 16:56:22,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:22,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052946832] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:22,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:22,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 13 [2022-07-22 16:56:22,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649928885] [2022-07-22 16:56:22,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:22,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 16:56:22,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:22,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 16:56:22,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:56:22,276 INFO L87 Difference]: Start difference. First operand 1824 states and 2894 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 16:56:22,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:22,416 INFO L93 Difference]: Finished difference Result 3289 states and 5214 transitions. [2022-07-22 16:56:22,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 16:56:22,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (15), 2 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 132 [2022-07-22 16:56:22,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:22,423 INFO L225 Difference]: With dead ends: 3289 [2022-07-22 16:56:22,423 INFO L226 Difference]: Without dead ends: 1543 [2022-07-22 16:56:22,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:56:22,429 INFO L413 NwaCegarLoop]: 973 mSDtfsCounter, 567 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:22,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 1403 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:56:22,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2022-07-22 16:56:22,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1543. [2022-07-22 16:56:22,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1214 states have (on average 1.5370675453047775) internal successors, (1866), 1241 states have internal predecessors, (1866), 241 states have call successors, (241), 89 states have call predecessors, (241), 87 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2022-07-22 16:56:22,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2403 transitions. [2022-07-22 16:56:22,598 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2403 transitions. Word has length 132 [2022-07-22 16:56:22,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:22,599 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2403 transitions. [2022-07-22 16:56:22,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 16:56:22,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2403 transitions. [2022-07-22 16:56:22,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-22 16:56:22,601 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:22,601 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2022-07-22 16:56:22,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 16:56:22,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-22 16:56:22,819 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:22,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:22,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1361697994, now seen corresponding path program 1 times [2022-07-22 16:56:22,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:22,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477656001] [2022-07-22 16:56:22,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:22,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:22,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 16:56:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:56:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 16:56:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 16:56:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 16:56:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 16:56:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 16:56:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-22 16:56:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-22 16:56:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,044 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-22 16:56:23,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:23,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477656001] [2022-07-22 16:56:23,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477656001] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:23,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498606634] [2022-07-22 16:56:23,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:23,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:23,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:23,060 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:56:23,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 16:56:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:56:23,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-22 16:56:23,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:23,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498606634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:23,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:23,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-07-22 16:56:23,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509670576] [2022-07-22 16:56:23,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:23,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:56:23,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:23,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:56:23,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:56:23,283 INFO L87 Difference]: Start difference. First operand 1543 states and 2403 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:56:23,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:23,549 INFO L93 Difference]: Finished difference Result 3086 states and 4878 transitions. [2022-07-22 16:56:23,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:56:23,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 155 [2022-07-22 16:56:23,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:23,560 INFO L225 Difference]: With dead ends: 3086 [2022-07-22 16:56:23,560 INFO L226 Difference]: Without dead ends: 1621 [2022-07-22 16:56:23,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:56:23,565 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 213 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:23,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 2379 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:56:23,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2022-07-22 16:56:23,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1621. [2022-07-22 16:56:23,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1621 states, 1290 states have (on average 1.5596899224806202) internal successors, (2012), 1317 states have internal predecessors, (2012), 241 states have call successors, (241), 91 states have call predecessors, (241), 89 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2022-07-22 16:56:23,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 2549 transitions. [2022-07-22 16:56:23,689 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 2549 transitions. Word has length 155 [2022-07-22 16:56:23,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:23,689 INFO L495 AbstractCegarLoop]: Abstraction has 1621 states and 2549 transitions. [2022-07-22 16:56:23,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:56:23,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 2549 transitions. [2022-07-22 16:56:23,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-22 16:56:23,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:23,691 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 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] [2022-07-22 16:56:23,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 16:56:23,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-22 16:56:23,913 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:23,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:23,914 INFO L85 PathProgramCache]: Analyzing trace with hash -394765468, now seen corresponding path program 1 times [2022-07-22 16:56:23,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:23,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614179513] [2022-07-22 16:56:23,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:23,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 16:56:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:56:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 16:56:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 16:56:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 16:56:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 16:56:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 16:56:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 16:56:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 16:56:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,092 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-22 16:56:24,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:24,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614179513] [2022-07-22 16:56:24,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614179513] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:24,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867848018] [2022-07-22 16:56:24,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:24,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:24,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:24,094 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:56:24,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 16:56:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:24,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:56:24,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:24,330 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 16:56:24,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:24,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867848018] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:24,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:24,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-07-22 16:56:24,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502392463] [2022-07-22 16:56:24,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:24,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:56:24,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:24,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:56:24,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:56:24,331 INFO L87 Difference]: Start difference. First operand 1621 states and 2549 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:56:24,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:24,588 INFO L93 Difference]: Finished difference Result 3242 states and 5168 transitions. [2022-07-22 16:56:24,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:56:24,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 160 [2022-07-22 16:56:24,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:24,594 INFO L225 Difference]: With dead ends: 3242 [2022-07-22 16:56:24,594 INFO L226 Difference]: Without dead ends: 1699 [2022-07-22 16:56:24,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:56:24,598 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 211 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:24,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 2379 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:56:24,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2022-07-22 16:56:24,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1699. [2022-07-22 16:56:24,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1366 states have (on average 1.5797950219619326) internal successors, (2158), 1393 states have internal predecessors, (2158), 241 states have call successors, (241), 93 states have call predecessors, (241), 91 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2022-07-22 16:56:24,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2695 transitions. [2022-07-22 16:56:24,725 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2695 transitions. Word has length 160 [2022-07-22 16:56:24,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:24,725 INFO L495 AbstractCegarLoop]: Abstraction has 1699 states and 2695 transitions. [2022-07-22 16:56:24,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:56:24,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2695 transitions. [2022-07-22 16:56:24,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-22 16:56:24,728 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:24,728 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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] [2022-07-22 16:56:24,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 16:56:24,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-22 16:56:24,943 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:24,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:24,944 INFO L85 PathProgramCache]: Analyzing trace with hash 718699668, now seen corresponding path program 1 times [2022-07-22 16:56:24,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:24,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884861531] [2022-07-22 16:56:24,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:24,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:25,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:25,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:25,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:25,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:25,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:25,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:25,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 16:56:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:25,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:56:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:25,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 16:56:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:25,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 16:56:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:25,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 16:56:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:25,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 16:56:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:25,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-22 16:56:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:25,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-22 16:56:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:25,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:25,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-22 16:56:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:25,148 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-22 16:56:25,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:25,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884861531] [2022-07-22 16:56:25,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884861531] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:25,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42239641] [2022-07-22 16:56:25,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:25,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:25,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:25,150 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:56:25,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 16:56:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:25,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 1345 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:56:25,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:25,399 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-22 16:56:25,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:25,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42239641] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:25,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:25,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-07-22 16:56:25,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114994579] [2022-07-22 16:56:25,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:25,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:56:25,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:25,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:56:25,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:56:25,401 INFO L87 Difference]: Start difference. First operand 1699 states and 2695 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:56:25,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:25,627 INFO L93 Difference]: Finished difference Result 3398 states and 5458 transitions. [2022-07-22 16:56:25,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:56:25,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 164 [2022-07-22 16:56:25,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:25,634 INFO L225 Difference]: With dead ends: 3398 [2022-07-22 16:56:25,634 INFO L226 Difference]: Without dead ends: 1777 [2022-07-22 16:56:25,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:56:25,639 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 209 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:25,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 2379 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:56:25,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1777 states. [2022-07-22 16:56:25,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1777 to 1777. [2022-07-22 16:56:25,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1442 states have (on average 1.5977808599167822) internal successors, (2304), 1469 states have internal predecessors, (2304), 241 states have call successors, (241), 95 states have call predecessors, (241), 93 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2022-07-22 16:56:25,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2841 transitions. [2022-07-22 16:56:25,785 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2841 transitions. Word has length 164 [2022-07-22 16:56:25,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:25,786 INFO L495 AbstractCegarLoop]: Abstraction has 1777 states and 2841 transitions. [2022-07-22 16:56:25,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:56:25,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2841 transitions. [2022-07-22 16:56:25,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 16:56:25,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:25,789 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 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] [2022-07-22 16:56:25,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 16:56:26,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-22 16:56:26,002 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:26,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:26,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1639074902, now seen corresponding path program 1 times [2022-07-22 16:56:26,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:26,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562590036] [2022-07-22 16:56:26,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:26,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 16:56:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:56:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 16:56:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 16:56:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 16:56:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 16:56:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 16:56:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 16:56:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 16:56:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,185 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-22 16:56:26,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:26,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562590036] [2022-07-22 16:56:26,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562590036] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:26,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244868735] [2022-07-22 16:56:26,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:26,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:26,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:26,187 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:56:26,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 16:56:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:56:26,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:26,409 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 16:56:26,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:26,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244868735] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:26,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:26,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-07-22 16:56:26,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138865450] [2022-07-22 16:56:26,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:26,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:56:26,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:26,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:56:26,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:56:26,411 INFO L87 Difference]: Start difference. First operand 1777 states and 2841 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:56:26,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:26,638 INFO L93 Difference]: Finished difference Result 3554 states and 5748 transitions. [2022-07-22 16:56:26,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:56:26,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 167 [2022-07-22 16:56:26,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:26,644 INFO L225 Difference]: With dead ends: 3554 [2022-07-22 16:56:26,644 INFO L226 Difference]: Without dead ends: 1855 [2022-07-22 16:56:26,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:56:26,649 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 207 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:26,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 2379 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:56:26,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2022-07-22 16:56:26,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 1855. [2022-07-22 16:56:26,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1518 states have (on average 1.613965744400527) internal successors, (2450), 1545 states have internal predecessors, (2450), 241 states have call successors, (241), 97 states have call predecessors, (241), 95 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2022-07-22 16:56:26,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 2987 transitions. [2022-07-22 16:56:26,773 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 2987 transitions. Word has length 167 [2022-07-22 16:56:26,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:26,773 INFO L495 AbstractCegarLoop]: Abstraction has 1855 states and 2987 transitions. [2022-07-22 16:56:26,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:56:26,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 2987 transitions. [2022-07-22 16:56:26,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-22 16:56:26,776 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:26,776 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:26,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-07-22 16:56:26,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-22 16:56:26,983 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:26,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:26,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1560627322, now seen corresponding path program 1 times [2022-07-22 16:56:26,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:26,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188404193] [2022-07-22 16:56:26,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:26,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:27,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:27,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:27,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:27,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:27,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:27,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:27,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 16:56:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:27,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:56:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:27,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 16:56:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:27,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 16:56:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:27,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 16:56:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:27,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 16:56:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:27,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 16:56:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:27,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 16:56:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:27,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:27,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-22 16:56:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:27,195 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-22 16:56:27,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:27,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188404193] [2022-07-22 16:56:27,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188404193] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:27,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279318851] [2022-07-22 16:56:27,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:27,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:27,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:27,197 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:56:27,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 16:56:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:27,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 1350 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:56:27,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:27,419 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-22 16:56:27,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:27,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279318851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:27,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:27,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-07-22 16:56:27,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751524601] [2022-07-22 16:56:27,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:27,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:56:27,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:27,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:56:27,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:56:27,421 INFO L87 Difference]: Start difference. First operand 1855 states and 2987 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:56:27,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:27,662 INFO L93 Difference]: Finished difference Result 3710 states and 6038 transitions. [2022-07-22 16:56:27,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:56:27,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 169 [2022-07-22 16:56:27,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:27,668 INFO L225 Difference]: With dead ends: 3710 [2022-07-22 16:56:27,668 INFO L226 Difference]: Without dead ends: 1933 [2022-07-22 16:56:27,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:56:27,673 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 205 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:27,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 2379 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:56:27,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2022-07-22 16:56:27,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1933. [2022-07-22 16:56:27,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1594 states have (on average 1.6286072772898368) internal successors, (2596), 1621 states have internal predecessors, (2596), 241 states have call successors, (241), 99 states have call predecessors, (241), 97 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2022-07-22 16:56:27,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 3133 transitions. [2022-07-22 16:56:27,799 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 3133 transitions. Word has length 169 [2022-07-22 16:56:27,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:27,799 INFO L495 AbstractCegarLoop]: Abstraction has 1933 states and 3133 transitions. [2022-07-22 16:56:27,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:56:27,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 3133 transitions. [2022-07-22 16:56:27,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-22 16:56:27,802 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:27,802 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:27,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 16:56:28,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:28,020 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:28,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:28,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1589598871, now seen corresponding path program 1 times [2022-07-22 16:56:28,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:28,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330426720] [2022-07-22 16:56:28,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:28,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 16:56:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:56:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 16:56:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 16:56:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 16:56:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 16:56:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 16:56:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 16:56:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-22 16:56:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,217 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-22 16:56:28,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:28,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330426720] [2022-07-22 16:56:28,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330426720] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:28,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946022103] [2022-07-22 16:56:28,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:28,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:28,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:28,236 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:56:28,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 16:56:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:28,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 1347 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:56:28,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:28,470 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-22 16:56:28,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:28,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946022103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:28,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:28,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-07-22 16:56:28,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191169246] [2022-07-22 16:56:28,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:28,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:56:28,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:28,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:56:28,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:56:28,472 INFO L87 Difference]: Start difference. First operand 1933 states and 3133 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:56:28,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:28,639 INFO L93 Difference]: Finished difference Result 3850 states and 6314 transitions. [2022-07-22 16:56:28,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:56:28,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 169 [2022-07-22 16:56:28,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:28,648 INFO L225 Difference]: With dead ends: 3850 [2022-07-22 16:56:28,648 INFO L226 Difference]: Without dead ends: 1995 [2022-07-22 16:56:28,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:56:28,654 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 69 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:28,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 2613 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:56:28,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2022-07-22 16:56:28,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1941. [2022-07-22 16:56:28,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1602 states have (on average 1.6254681647940075) internal successors, (2604), 1629 states have internal predecessors, (2604), 241 states have call successors, (241), 99 states have call predecessors, (241), 97 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2022-07-22 16:56:28,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 3141 transitions. [2022-07-22 16:56:28,824 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 3141 transitions. Word has length 169 [2022-07-22 16:56:28,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:28,824 INFO L495 AbstractCegarLoop]: Abstraction has 1941 states and 3141 transitions. [2022-07-22 16:56:28,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:56:28,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 3141 transitions. [2022-07-22 16:56:28,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-07-22 16:56:28,828 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:28,828 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 3, 3, 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] [2022-07-22 16:56:28,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-07-22 16:56:29,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:29,045 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:29,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:29,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1011251356, now seen corresponding path program 1 times [2022-07-22 16:56:29,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:29,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061583907] [2022-07-22 16:56:29,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:29,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:29,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:29,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:29,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:29,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:29,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:29,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:29,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:56:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:29,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:56:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:29,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 16:56:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:29,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 16:56:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:29,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 16:56:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:29,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 16:56:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:29,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 16:56:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:29,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 16:56:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:29,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-22 16:56:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:29,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:29,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-22 16:56:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:29,215 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-22 16:56:29,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:29,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061583907] [2022-07-22 16:56:29,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061583907] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:29,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351392985] [2022-07-22 16:56:29,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:29,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:29,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:29,217 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:56:29,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-22 16:56:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:29,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-22 16:56:29,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:29,624 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-22 16:56:29,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:29,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351392985] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:29,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:29,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-07-22 16:56:29,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289790467] [2022-07-22 16:56:29,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:29,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 16:56:29,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:29,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 16:56:29,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:56:29,625 INFO L87 Difference]: Start difference. First operand 1941 states and 3141 transitions. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (17), 4 states have call predecessors, (17), 6 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 16:56:31,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:31,696 INFO L93 Difference]: Finished difference Result 5972 states and 9878 transitions. [2022-07-22 16:56:31,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 16:56:31,696 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (17), 4 states have call predecessors, (17), 6 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) Word has length 177 [2022-07-22 16:56:31,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:31,714 INFO L225 Difference]: With dead ends: 5972 [2022-07-22 16:56:31,714 INFO L226 Difference]: Without dead ends: 3737 [2022-07-22 16:56:31,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2022-07-22 16:56:31,723 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 1945 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 4093 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 2758 SdHoareTripleChecker+Invalid, 4609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 4093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:31,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2050 Valid, 2758 Invalid, 4609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 4093 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 16:56:31,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2022-07-22 16:56:32,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3657. [2022-07-22 16:56:32,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3657 states, 2960 states have (on average 1.6422297297297297) internal successors, (4861), 3040 states have internal predecessors, (4861), 499 states have call successors, (499), 179 states have call predecessors, (499), 197 states have return successors, (641), 495 states have call predecessors, (641), 495 states have call successors, (641) [2022-07-22 16:56:32,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3657 states to 3657 states and 6001 transitions. [2022-07-22 16:56:32,017 INFO L78 Accepts]: Start accepts. Automaton has 3657 states and 6001 transitions. Word has length 177 [2022-07-22 16:56:32,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:32,017 INFO L495 AbstractCegarLoop]: Abstraction has 3657 states and 6001 transitions. [2022-07-22 16:56:32,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (17), 4 states have call predecessors, (17), 6 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 16:56:32,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3657 states and 6001 transitions. [2022-07-22 16:56:32,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-07-22 16:56:32,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:32,024 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 3, 3, 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] [2022-07-22 16:56:32,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-07-22 16:56:32,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:32,258 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:32,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:32,259 INFO L85 PathProgramCache]: Analyzing trace with hash -359912820, now seen corresponding path program 1 times [2022-07-22 16:56:32,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:32,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798943239] [2022-07-22 16:56:32,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:32,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:56:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:56:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 16:56:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 16:56:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 16:56:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 16:56:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 16:56:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 16:56:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-22 16:56:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-22 16:56:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:32,368 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-07-22 16:56:32,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:32,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798943239] [2022-07-22 16:56:32,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798943239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:32,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:32,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:56:32,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596995753] [2022-07-22 16:56:32,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:32,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:56:32,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:32,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:56:32,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:56:32,370 INFO L87 Difference]: Start difference. First operand 3657 states and 6001 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:56:35,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:35,105 INFO L93 Difference]: Finished difference Result 8186 states and 13608 transitions. [2022-07-22 16:56:35,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 16:56:35,105 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 177 [2022-07-22 16:56:35,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:35,120 INFO L225 Difference]: With dead ends: 8186 [2022-07-22 16:56:35,120 INFO L226 Difference]: Without dead ends: 4543 [2022-07-22 16:56:35,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:56:35,128 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 791 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 2035 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:35,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 2035 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1648 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 16:56:35,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4543 states. [2022-07-22 16:56:35,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4543 to 3671. [2022-07-22 16:56:35,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3671 states, 2974 states have (on average 1.6314727639542703) internal successors, (4852), 3054 states have internal predecessors, (4852), 499 states have call successors, (499), 179 states have call predecessors, (499), 197 states have return successors, (641), 495 states have call predecessors, (641), 495 states have call successors, (641) [2022-07-22 16:56:35,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3671 states to 3671 states and 5992 transitions. [2022-07-22 16:56:35,435 INFO L78 Accepts]: Start accepts. Automaton has 3671 states and 5992 transitions. Word has length 177 [2022-07-22 16:56:35,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:35,435 INFO L495 AbstractCegarLoop]: Abstraction has 3671 states and 5992 transitions. [2022-07-22 16:56:35,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:56:35,435 INFO L276 IsEmpty]: Start isEmpty. Operand 3671 states and 5992 transitions. [2022-07-22 16:56:35,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-22 16:56:35,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:35,444 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 3, 3, 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] [2022-07-22 16:56:35,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-22 16:56:35,444 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:35,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:35,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1639945016, now seen corresponding path program 1 times [2022-07-22 16:56:35,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:35,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899115765] [2022-07-22 16:56:35,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:35,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:35,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:35,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:35,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:35,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 16:56:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:35,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:35,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 16:56:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:35,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:56:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:35,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 16:56:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:35,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 16:56:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:35,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 16:56:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:35,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 16:56:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:35,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 16:56:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:35,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 16:56:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:35,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-22 16:56:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:35,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 16:56:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:35,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:35,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-22 16:56:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:35,593 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-07-22 16:56:35,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:35,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899115765] [2022-07-22 16:56:35,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899115765] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:35,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:35,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 16:56:35,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241489817] [2022-07-22 16:56:35,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:35,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 16:56:35,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:35,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 16:56:35,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:56:35,595 INFO L87 Difference]: Start difference. First operand 3671 states and 5992 transitions. Second operand has 9 states, 8 states have (on average 14.5) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 16:56:38,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:38,405 INFO L93 Difference]: Finished difference Result 7846 states and 13112 transitions. [2022-07-22 16:56:38,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 16:56:38,405 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 14.5) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 183 [2022-07-22 16:56:38,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:38,419 INFO L225 Difference]: With dead ends: 7846 [2022-07-22 16:56:38,420 INFO L226 Difference]: Without dead ends: 4112 [2022-07-22 16:56:38,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:56:38,431 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 1402 mSDsluCounter, 2528 mSDsCounter, 0 mSdLazyCounter, 3367 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 3422 SdHoareTripleChecker+Invalid, 3733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 3367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:38,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 3422 Invalid, 3733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 3367 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 16:56:38,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4112 states. [2022-07-22 16:56:38,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4112 to 3311. [2022-07-22 16:56:38,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3311 states, 2714 states have (on average 1.6680176860722182) internal successors, (4527), 2781 states have internal predecessors, (4527), 419 states have call successors, (419), 167 states have call predecessors, (419), 177 states have return successors, (511), 410 states have call predecessors, (511), 415 states have call successors, (511) [2022-07-22 16:56:38,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3311 states to 3311 states and 5457 transitions. [2022-07-22 16:56:38,724 INFO L78 Accepts]: Start accepts. Automaton has 3311 states and 5457 transitions. Word has length 183 [2022-07-22 16:56:38,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:38,725 INFO L495 AbstractCegarLoop]: Abstraction has 3311 states and 5457 transitions. [2022-07-22 16:56:38,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 14.5) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 16:56:38,725 INFO L276 IsEmpty]: Start isEmpty. Operand 3311 states and 5457 transitions. [2022-07-22 16:56:38,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2022-07-22 16:56:38,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:38,733 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:38,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-22 16:56:38,734 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:38,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:38,734 INFO L85 PathProgramCache]: Analyzing trace with hash 58685341, now seen corresponding path program 1 times [2022-07-22 16:56:38,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:38,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029405047] [2022-07-22 16:56:38,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:38,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:38,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:38,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:38,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:38,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:56:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:56:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 16:56:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:56:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 16:56:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:56:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:56:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 16:56:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:56:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 16:56:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:56:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 16:56:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:56:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:56:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-22 16:56:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:56:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:56:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 16:56:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:56:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 16:56:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:56:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 16:56:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-07-22 16:56:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-07-22 16:56:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-07-22 16:56:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:56:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-07-22 16:56:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-07-22 16:56:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-07-22 16:56:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-07-22 16:56:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-07-22 16:56:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-07-22 16:56:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-07-22 16:56:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-07-22 16:56:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-07-22 16:56:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1099 backedges. 37 proven. 136 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2022-07-22 16:56:39,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:39,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029405047] [2022-07-22 16:56:39,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029405047] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:39,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888921228] [2022-07-22 16:56:39,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:39,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:39,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:39,225 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:56:39,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-22 16:56:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 3234 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 16:56:39,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:39,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1099 backedges. 371 proven. 50 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2022-07-22 16:56:39,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 16:56:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1099 backedges. 53 proven. 101 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2022-07-22 16:56:40,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888921228] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 16:56:40,652 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 16:56:40,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 14] total 34 [2022-07-22 16:56:40,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978084019] [2022-07-22 16:56:40,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 16:56:40,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-22 16:56:40,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:40,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-22 16:56:40,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2022-07-22 16:56:40,655 INFO L87 Difference]: Start difference. First operand 3311 states and 5457 transitions. Second operand has 34 states, 32 states have (on average 12.03125) internal successors, (385), 25 states have internal predecessors, (385), 17 states have call successors, (92), 11 states have call predecessors, (92), 14 states have return successors, (91), 22 states have call predecessors, (91), 17 states have call successors, (91)