./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec14_product03.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_product03.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8ed4163e8f042a84d9cdccd4fee3ee0ba89fdce83cd991779acec4a51d9a650c --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 16:55:11,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 16:55:11,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 16:55:11,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 16:55:11,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 16:55:11,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 16:55:11,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 16:55:11,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 16:55:11,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 16:55:11,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 16:55:11,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 16:55:11,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 16:55:11,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 16:55:11,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 16:55:11,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 16:55:11,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 16:55:11,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 16:55:11,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 16:55:11,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 16:55:11,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 16:55:11,828 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 16:55:11,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 16:55:11,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 16:55:11,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 16:55:11,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 16:55:11,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 16:55:11,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 16:55:11,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 16:55:11,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 16:55:11,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 16:55:11,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 16:55:11,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 16:55:11,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 16:55:11,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 16:55:11,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 16:55:11,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 16:55:11,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 16:55:11,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 16:55:11,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 16:55:11,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 16:55:11,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 16:55:11,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 16:55:11,846 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 16:55:11,874 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 16:55:11,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 16:55:11,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 16:55:11,875 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 16:55:11,876 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 16:55:11,876 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 16:55:11,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 16:55:11,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 16:55:11,877 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 16:55:11,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 16:55:11,877 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 16:55:11,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 16:55:11,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 16:55:11,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 16:55:11,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 16:55:11,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 16:55:11,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 16:55:11,878 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 16:55:11,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 16:55:11,878 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 16:55:11,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 16:55:11,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 16:55:11,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 16:55:11,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 16:55:11,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 16:55:11,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 16:55:11,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 16:55:11,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 16:55:11,880 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 16:55:11,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 16:55:11,880 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 16:55:11,880 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 16:55:11,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 16:55:11,881 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ed4163e8f042a84d9cdccd4fee3ee0ba89fdce83cd991779acec4a51d9a650c [2022-07-22 16:55:12,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 16:55:12,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 16:55:12,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 16:55:12,091 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 16:55:12,091 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 16:55:12,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec14_product03.cil.c [2022-07-22 16:55:12,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/778e694eb/7e4c115c063e4e92afd547ece6dd53fe/FLAGaeaca8dc8 [2022-07-22 16:55:12,606 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 16:55:12,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec14_product03.cil.c [2022-07-22 16:55:12,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/778e694eb/7e4c115c063e4e92afd547ece6dd53fe/FLAGaeaca8dc8 [2022-07-22 16:55:12,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/778e694eb/7e4c115c063e4e92afd547ece6dd53fe [2022-07-22 16:55:12,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 16:55:12,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 16:55:12,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 16:55:12,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 16:55:12,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 16:55:12,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:55:12" (1/1) ... [2022-07-22 16:55:12,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16f88a00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:12, skipping insertion in model container [2022-07-22 16:55:12,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:55:12" (1/1) ... [2022-07-22 16:55:12,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 16:55:12,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 16:55:13,397 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_product03.cil.c[68958,68971] [2022-07-22 16:55:13,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 16:55:13,408 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 16:55:13,464 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_product03.cil.c[68958,68971] [2022-07-22 16:55:13,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 16:55:13,484 INFO L208 MainTranslator]: Completed translation [2022-07-22 16:55:13,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:13 WrapperNode [2022-07-22 16:55:13,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 16:55:13,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 16:55:13,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 16:55:13,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 16:55:13,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:13" (1/1) ... [2022-07-22 16:55:13,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:13" (1/1) ... [2022-07-22 16:55:13,548 INFO L137 Inliner]: procedures = 89, calls = 329, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 1003 [2022-07-22 16:55:13,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 16:55:13,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 16:55:13,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 16:55:13,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 16:55:13,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:13" (1/1) ... [2022-07-22 16:55:13,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:13" (1/1) ... [2022-07-22 16:55:13,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:13" (1/1) ... [2022-07-22 16:55:13,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:13" (1/1) ... [2022-07-22 16:55:13,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:13" (1/1) ... [2022-07-22 16:55:13,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:13" (1/1) ... [2022-07-22 16:55:13,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:13" (1/1) ... [2022-07-22 16:55:13,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 16:55:13,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 16:55:13,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 16:55:13,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 16:55:13,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:13" (1/1) ... [2022-07-22 16:55:13,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 16:55:13,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:55:13,688 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 16:55:13,709 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 16:55:13,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 16:55:13,747 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-22 16:55:13,748 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-22 16:55:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-22 16:55:13,748 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-22 16:55:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-07-22 16:55:13,748 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-07-22 16:55:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-22 16:55:13,748 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-22 16:55:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-07-22 16:55:13,748 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-07-22 16:55:13,749 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-22 16:55:13,749 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-22 16:55:13,749 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-22 16:55:13,749 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-22 16:55:13,749 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-22 16:55:13,749 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-22 16:55:13,749 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-22 16:55:13,749 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-22 16:55:13,749 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-22 16:55:13,750 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-22 16:55:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-22 16:55:13,750 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-22 16:55:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-22 16:55:13,750 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-22 16:55:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-22 16:55:13,750 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-22 16:55:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-22 16:55:13,751 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-22 16:55:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-22 16:55:13,751 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-22 16:55:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-22 16:55:13,751 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-22 16:55:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-22 16:55:13,751 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-22 16:55:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2022-07-22 16:55:13,751 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2022-07-22 16:55:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 16:55:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-22 16:55:13,752 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-22 16:55:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-22 16:55:13,752 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-22 16:55:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-22 16:55:13,752 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-22 16:55:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 16:55:13,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 16:55:13,753 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-22 16:55:13,753 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-22 16:55:13,867 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 16:55:13,883 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 16:55:14,456 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 16:55:14,469 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 16:55:14,469 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 16:55:14,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:55:14 BoogieIcfgContainer [2022-07-22 16:55:14,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 16:55:14,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 16:55:14,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 16:55:14,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 16:55:14,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 04:55:12" (1/3) ... [2022-07-22 16:55:14,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df78534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:55:14, skipping insertion in model container [2022-07-22 16:55:14,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:55:13" (2/3) ... [2022-07-22 16:55:14,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df78534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:55:14, skipping insertion in model container [2022-07-22 16:55:14,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:55:14" (3/3) ... [2022-07-22 16:55:14,481 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product03.cil.c [2022-07-22 16:55:14,490 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 16:55:14,491 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 16:55:14,552 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 16:55:14,558 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@15897188, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@47346898 [2022-07-22 16:55:14,558 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 16:55:14,569 INFO L276 IsEmpty]: Start isEmpty. Operand has 517 states, 402 states have (on average 1.681592039800995) internal successors, (676), 418 states have internal predecessors, (676), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-07-22 16:55:14,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 16:55:14,601 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:14,601 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:55:14,602 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:14,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:14,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1965651267, now seen corresponding path program 1 times [2022-07-22 16:55:14,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:14,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202292170] [2022-07-22 16:55:14,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:14,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:14,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:14,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:15,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:15,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 16:55:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:15,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:15,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:55:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:15,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 16:55:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:15,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:15,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:15,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 16:55:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:15,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 16:55:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:15,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:15,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 16:55:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:15,076 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 16:55:15,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:15,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202292170] [2022-07-22 16:55:15,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202292170] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:15,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:15,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:55:15,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393966851] [2022-07-22 16:55:15,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:15,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:55:15,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:15,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:55:15,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:55:15,100 INFO L87 Difference]: Start difference. First operand has 517 states, 402 states have (on average 1.681592039800995) internal successors, (676), 418 states have internal predecessors, (676), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:55:17,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:17,806 INFO L93 Difference]: Finished difference Result 1231 states and 2072 transitions. [2022-07-22 16:55:17,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 16:55:17,810 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 101 [2022-07-22 16:55:17,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:17,822 INFO L225 Difference]: With dead ends: 1231 [2022-07-22 16:55:17,822 INFO L226 Difference]: Without dead ends: 710 [2022-07-22 16:55:17,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:55:17,830 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 1280 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 2335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:17,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1327 Valid, 1767 Invalid, 2335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 16:55:17,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-07-22 16:55:17,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 512. [2022-07-22 16:55:17,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 398 states have (on average 1.670854271356784) internal successors, (665), 413 states have internal predecessors, (665), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2022-07-22 16:55:17,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 846 transitions. [2022-07-22 16:55:17,918 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 846 transitions. Word has length 101 [2022-07-22 16:55:17,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:17,919 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 846 transitions. [2022-07-22 16:55:17,919 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:55:17,919 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 846 transitions. [2022-07-22 16:55:17,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 16:55:17,923 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:17,924 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 16:55:17,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 16:55:17,924 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:17,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:17,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1219828463, now seen corresponding path program 1 times [2022-07-22 16:55:17,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:17,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261431157] [2022-07-22 16:55:17,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:17,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:18,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:18,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:18,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:55:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:18,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 16:55:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:18,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:18,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:55:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:18,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 16:55:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:18,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:18,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:18,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 16:55:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:18,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:55:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:18,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:18,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 16:55:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:18,118 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 16:55:18,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:18,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261431157] [2022-07-22 16:55:18,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261431157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:18,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:18,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:55:18,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018042123] [2022-07-22 16:55:18,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:18,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:55:18,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:18,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:55:18,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:55:18,123 INFO L87 Difference]: Start difference. First operand 512 states and 846 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:55:20,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:20,567 INFO L93 Difference]: Finished difference Result 1205 states and 1999 transitions. [2022-07-22 16:55:20,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:55:20,567 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 102 [2022-07-22 16:55:20,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:20,571 INFO L225 Difference]: With dead ends: 1205 [2022-07-22 16:55:20,571 INFO L226 Difference]: Without dead ends: 710 [2022-07-22 16:55:20,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 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 16:55:20,574 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 1287 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 1923 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 2326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 1923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:20,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1334 Valid, 1608 Invalid, 2326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 1923 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 16:55:20,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-07-22 16:55:20,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 512. [2022-07-22 16:55:20,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 398 states have (on average 1.6683417085427135) internal successors, (664), 413 states have internal predecessors, (664), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2022-07-22 16:55:20,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 845 transitions. [2022-07-22 16:55:20,610 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 845 transitions. Word has length 102 [2022-07-22 16:55:20,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:20,611 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 845 transitions. [2022-07-22 16:55:20,611 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:55:20,611 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 845 transitions. [2022-07-22 16:55:20,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-22 16:55:20,614 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:20,614 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 16:55:20,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 16:55:20,614 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:20,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:20,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1726293121, now seen corresponding path program 1 times [2022-07-22 16:55:20,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:20,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974967636] [2022-07-22 16:55:20,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:20,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:20,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:20,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:20,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:55:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:20,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 16:55:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:20,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:20,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 16:55:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:20,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 16:55:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:20,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:20,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:20,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 16:55:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:20,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 16:55:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:20,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:20,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 16:55:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:20,756 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 16:55:20,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:20,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974967636] [2022-07-22 16:55:20,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974967636] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:20,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:20,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:55:20,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645523336] [2022-07-22 16:55:20,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:20,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:55:20,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:20,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:55:20,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:55:20,759 INFO L87 Difference]: Start difference. First operand 512 states and 845 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:55:23,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:23,158 INFO L93 Difference]: Finished difference Result 1205 states and 1998 transitions. [2022-07-22 16:55:23,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:55:23,159 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 103 [2022-07-22 16:55:23,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:23,162 INFO L225 Difference]: With dead ends: 1205 [2022-07-22 16:55:23,162 INFO L226 Difference]: Without dead ends: 710 [2022-07-22 16:55:23,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 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 16:55:23,165 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 1269 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 1925 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 2327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 1925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:23,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1316 Valid, 1662 Invalid, 2327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 1925 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 16:55:23,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-07-22 16:55:23,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 512. [2022-07-22 16:55:23,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 398 states have (on average 1.6658291457286432) internal successors, (663), 413 states have internal predecessors, (663), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2022-07-22 16:55:23,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 844 transitions. [2022-07-22 16:55:23,198 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 844 transitions. Word has length 103 [2022-07-22 16:55:23,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:23,198 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 844 transitions. [2022-07-22 16:55:23,199 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:55:23,199 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 844 transitions. [2022-07-22 16:55:23,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 16:55:23,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:23,201 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 16:55:23,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 16:55:23,201 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:23,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:23,202 INFO L85 PathProgramCache]: Analyzing trace with hash -787669171, now seen corresponding path program 1 times [2022-07-22 16:55:23,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:23,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412513165] [2022-07-22 16:55:23,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:23,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:23,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:23,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:23,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 16:55:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:23,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 16:55:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:23,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:23,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 16:55:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:23,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 16:55:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:23,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:23,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:23,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 16:55:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:23,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 16:55:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:23,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:23,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 16:55:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:23,316 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 16:55:23,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:23,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412513165] [2022-07-22 16:55:23,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412513165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:23,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:23,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:55:23,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931701568] [2022-07-22 16:55:23,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:23,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:55:23,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:23,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:55:23,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:55:23,320 INFO L87 Difference]: Start difference. First operand 512 states and 844 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:55:25,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:25,068 INFO L93 Difference]: Finished difference Result 1205 states and 1997 transitions. [2022-07-22 16:55:25,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:55:25,069 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2022-07-22 16:55:25,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:25,084 INFO L225 Difference]: With dead ends: 1205 [2022-07-22 16:55:25,084 INFO L226 Difference]: Without dead ends: 710 [2022-07-22 16:55:25,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 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 16:55:25,107 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 1265 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 1916 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 2320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 1916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:25,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 1659 Invalid, 2320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 1916 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 16:55:25,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-07-22 16:55:25,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 512. [2022-07-22 16:55:25,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 398 states have (on average 1.6633165829145728) internal successors, (662), 413 states have internal predecessors, (662), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2022-07-22 16:55:25,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 843 transitions. [2022-07-22 16:55:25,147 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 843 transitions. Word has length 104 [2022-07-22 16:55:25,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:25,148 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 843 transitions. [2022-07-22 16:55:25,148 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:55:25,149 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 843 transitions. [2022-07-22 16:55:25,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 16:55:25,152 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:25,153 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 16:55:25,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 16:55:25,153 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:25,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:25,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1999028667, now seen corresponding path program 1 times [2022-07-22 16:55:25,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:25,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290658612] [2022-07-22 16:55:25,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:25,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:25,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:25,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:25,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:55:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:25,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 16:55:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:25,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:25,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 16:55:25,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:25,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 16:55:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:25,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:25,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:25,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 16:55:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:25,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 16:55:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:25,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:25,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:25,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 16:55:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:25,313 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 16:55:25,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:25,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290658612] [2022-07-22 16:55:25,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290658612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:25,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:25,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:55:25,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053018963] [2022-07-22 16:55:25,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:25,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:55:25,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:25,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:55:25,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:55:25,316 INFO L87 Difference]: Start difference. First operand 512 states and 843 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:55:27,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:27,361 INFO L93 Difference]: Finished difference Result 1205 states and 1996 transitions. [2022-07-22 16:55:27,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:55:27,362 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2022-07-22 16:55:27,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:27,365 INFO L225 Difference]: With dead ends: 1205 [2022-07-22 16:55:27,365 INFO L226 Difference]: Without dead ends: 710 [2022-07-22 16:55:27,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 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 16:55:27,367 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 1256 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 1910 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 2315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 1910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:27,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1303 Valid, 1674 Invalid, 2315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 1910 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 16:55:27,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-07-22 16:55:27,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 512. [2022-07-22 16:55:27,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 398 states have (on average 1.6608040201005025) internal successors, (661), 413 states have internal predecessors, (661), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2022-07-22 16:55:27,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 842 transitions. [2022-07-22 16:55:27,402 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 842 transitions. Word has length 105 [2022-07-22 16:55:27,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:27,402 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 842 transitions. [2022-07-22 16:55:27,402 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:55:27,402 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 842 transitions. [2022-07-22 16:55:27,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 16:55:27,404 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:27,404 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 16:55:27,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 16:55:27,404 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:27,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:27,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1946474889, now seen corresponding path program 1 times [2022-07-22 16:55:27,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:27,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739519292] [2022-07-22 16:55:27,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:27,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:27,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:27,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:27,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:55:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:27,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 16:55:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:27,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:27,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 16:55:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:27,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:55:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:27,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:27,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:27,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 16:55:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:27,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 16:55:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:27,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:27,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 16:55:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:27,593 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 16:55:27,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:27,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739519292] [2022-07-22 16:55:27,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739519292] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:27,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:27,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 16:55:27,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124080946] [2022-07-22 16:55:27,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:27,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 16:55:27,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:27,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 16:55:27,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:55:27,595 INFO L87 Difference]: Start difference. First operand 512 states and 842 transitions. Second operand has 9 states, 8 states have (on average 8.125) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:55:30,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:30,306 INFO L93 Difference]: Finished difference Result 1227 states and 2032 transitions. [2022-07-22 16:55:30,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 16:55:30,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 106 [2022-07-22 16:55:30,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:30,310 INFO L225 Difference]: With dead ends: 1227 [2022-07-22 16:55:30,310 INFO L226 Difference]: Without dead ends: 736 [2022-07-22 16:55:30,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:55:30,313 INFO L413 NwaCegarLoop]: 828 mSDtfsCounter, 1381 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 4094 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 2718 SdHoareTripleChecker+Invalid, 4506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 4094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:30,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 2718 Invalid, 4506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 4094 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 16:55:30,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-07-22 16:55:30,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 525. [2022-07-22 16:55:30,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 408 states have (on average 1.6568627450980393) internal successors, (676), 425 states have internal predecessors, (676), 92 states have call successors, (92), 23 states have call predecessors, (92), 24 states have return successors, (94), 89 states have call predecessors, (94), 91 states have call successors, (94) [2022-07-22 16:55:30,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 862 transitions. [2022-07-22 16:55:30,348 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 862 transitions. Word has length 106 [2022-07-22 16:55:30,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:30,349 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 862 transitions. [2022-07-22 16:55:30,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:55:30,349 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 862 transitions. [2022-07-22 16:55:30,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 16:55:30,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:30,352 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 16:55:30,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 16:55:30,353 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:30,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:30,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1409960792, now seen corresponding path program 1 times [2022-07-22 16:55:30,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:30,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519328924] [2022-07-22 16:55:30,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:30,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:30,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:30,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:30,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:55:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:30,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 16:55:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:30,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:30,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 16:55:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:30,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:55:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:30,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:30,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:30,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 16:55:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:30,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 16:55:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:30,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:30,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 16:55:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:30,474 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 16:55:30,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:30,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519328924] [2022-07-22 16:55:30,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519328924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:30,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:30,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:55:30,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856349121] [2022-07-22 16:55:30,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:30,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:55:30,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:30,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:55:30,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:55:30,476 INFO L87 Difference]: Start difference. First operand 525 states and 862 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:55:32,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:32,784 INFO L93 Difference]: Finished difference Result 1270 states and 2105 transitions. [2022-07-22 16:55:32,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 16:55:32,784 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 106 [2022-07-22 16:55:32,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:32,787 INFO L225 Difference]: With dead ends: 1270 [2022-07-22 16:55:32,787 INFO L226 Difference]: Without dead ends: 770 [2022-07-22 16:55:32,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:55:32,790 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 1312 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 1880 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1359 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 2354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 474 IncrementalHoareTripleChecker+Valid, 1880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:32,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1359 Valid, 1673 Invalid, 2354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [474 Valid, 1880 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 16:55:32,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2022-07-22 16:55:32,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 545. [2022-07-22 16:55:32,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 427 states have (on average 1.6510538641686183) internal successors, (705), 444 states have internal predecessors, (705), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (93), 89 states have call predecessors, (93), 91 states have call successors, (93) [2022-07-22 16:55:32,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 890 transitions. [2022-07-22 16:55:32,825 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 890 transitions. Word has length 106 [2022-07-22 16:55:32,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:32,826 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 890 transitions. [2022-07-22 16:55:32,826 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:55:32,826 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 890 transitions. [2022-07-22 16:55:32,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-22 16:55:32,828 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:32,828 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 16:55:32,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 16:55:32,828 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:32,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:32,829 INFO L85 PathProgramCache]: Analyzing trace with hash 416871043, now seen corresponding path program 1 times [2022-07-22 16:55:32,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:32,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367161355] [2022-07-22 16:55:32,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:32,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:32,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:32,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:32,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:55:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:32,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 16:55:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:32,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:32,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 16:55:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:32,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 16:55:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:32,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:32,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:32,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 16:55:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:32,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 16:55:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:32,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:32,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 16:55:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:32,998 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 16:55:32,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:32,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367161355] [2022-07-22 16:55:32,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367161355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:32,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:32,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:55:32,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224954060] [2022-07-22 16:55:32,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:32,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:55:32,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:32,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:55:32,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:55:32,999 INFO L87 Difference]: Start difference. First operand 545 states and 890 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:55:35,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:35,237 INFO L93 Difference]: Finished difference Result 1245 states and 2040 transitions. [2022-07-22 16:55:35,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 16:55:35,237 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 107 [2022-07-22 16:55:35,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:35,241 INFO L225 Difference]: With dead ends: 1245 [2022-07-22 16:55:35,241 INFO L226 Difference]: Without dead ends: 761 [2022-07-22 16:55:35,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 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 16:55:35,243 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 1273 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 2344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:35,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1320 Valid, 1666 Invalid, 2344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 16:55:35,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-07-22 16:55:35,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 545. [2022-07-22 16:55:35,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 427 states have (on average 1.639344262295082) internal successors, (700), 444 states have internal predecessors, (700), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (93), 89 states have call predecessors, (93), 91 states have call successors, (93) [2022-07-22 16:55:35,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 885 transitions. [2022-07-22 16:55:35,279 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 885 transitions. Word has length 107 [2022-07-22 16:55:35,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:35,279 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 885 transitions. [2022-07-22 16:55:35,279 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:55:35,280 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 885 transitions. [2022-07-22 16:55:35,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-22 16:55:35,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:35,282 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 16:55:35,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 16:55:35,282 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:35,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:35,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1916227379, now seen corresponding path program 1 times [2022-07-22 16:55:35,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:35,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309694782] [2022-07-22 16:55:35,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:35,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:35,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:35,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:35,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:55:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:35,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 16:55:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:35,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:35,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 16:55:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:35,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:55:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:35,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:35,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:35,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 16:55:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:35,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 16:55:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:35,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:35,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 16:55:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:35,424 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 16:55:35,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:35,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309694782] [2022-07-22 16:55:35,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309694782] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:35,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:35,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:55:35,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319294178] [2022-07-22 16:55:35,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:35,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:55:35,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:35,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:55:35,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:55:35,426 INFO L87 Difference]: Start difference. First operand 545 states and 885 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:55:37,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:37,543 INFO L93 Difference]: Finished difference Result 1245 states and 2035 transitions. [2022-07-22 16:55:37,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 16:55:37,543 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 108 [2022-07-22 16:55:37,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:37,546 INFO L225 Difference]: With dead ends: 1245 [2022-07-22 16:55:37,547 INFO L226 Difference]: Without dead ends: 761 [2022-07-22 16:55:37,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 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 16:55:37,549 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 1280 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 2325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 1869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:37,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1327 Valid, 1630 Invalid, 2325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 1869 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 16:55:37,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-07-22 16:55:37,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 545. [2022-07-22 16:55:37,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 427 states have (on average 1.6276346604215457) internal successors, (695), 444 states have internal predecessors, (695), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (93), 89 states have call predecessors, (93), 91 states have call successors, (93) [2022-07-22 16:55:37,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 880 transitions. [2022-07-22 16:55:37,586 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 880 transitions. Word has length 108 [2022-07-22 16:55:37,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:37,587 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 880 transitions. [2022-07-22 16:55:37,587 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:55:37,587 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 880 transitions. [2022-07-22 16:55:37,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 16:55:37,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:37,589 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 16:55:37,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 16:55:37,589 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:37,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:37,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1956894120, now seen corresponding path program 1 times [2022-07-22 16:55:37,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:37,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070048635] [2022-07-22 16:55:37,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:37,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:37,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:37,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:37,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:55:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:37,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:55:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:37,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:37,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 16:55:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:37,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 16:55:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:37,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:37,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:37,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 16:55:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:37,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 16:55:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:37,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:37,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 16:55:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:37,738 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 16:55:37,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:37,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070048635] [2022-07-22 16:55:37,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070048635] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:37,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:37,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 16:55:37,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936926971] [2022-07-22 16:55:37,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:37,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 16:55:37,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:37,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 16:55:37,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:55:37,740 INFO L87 Difference]: Start difference. First operand 545 states and 880 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:55:40,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:40,393 INFO L93 Difference]: Finished difference Result 1249 states and 2031 transitions. [2022-07-22 16:55:40,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 16:55:40,394 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 109 [2022-07-22 16:55:40,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:40,397 INFO L225 Difference]: With dead ends: 1249 [2022-07-22 16:55:40,397 INFO L226 Difference]: Without dead ends: 780 [2022-07-22 16:55:40,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-07-22 16:55:40,399 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 1303 mSDsluCounter, 1975 mSDsCounter, 0 mSdLazyCounter, 4090 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 4505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 4090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:40,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 2786 Invalid, 4505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 4090 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 16:55:40,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-07-22 16:55:40,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 547. [2022-07-22 16:55:40,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 429 states have (on average 1.6223776223776223) internal successors, (696), 446 states have internal predecessors, (696), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (93), 89 states have call predecessors, (93), 91 states have call successors, (93) [2022-07-22 16:55:40,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 881 transitions. [2022-07-22 16:55:40,437 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 881 transitions. Word has length 109 [2022-07-22 16:55:40,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:40,437 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 881 transitions. [2022-07-22 16:55:40,437 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:55:40,437 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 881 transitions. [2022-07-22 16:55:40,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 16:55:40,439 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:40,439 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 16:55:40,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 16:55:40,440 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:40,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:40,440 INFO L85 PathProgramCache]: Analyzing trace with hash -63177592, now seen corresponding path program 1 times [2022-07-22 16:55:40,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:40,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525508098] [2022-07-22 16:55:40,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:40,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:40,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:40,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:40,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:55:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:40,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:55:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:40,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:40,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 16:55:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:40,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 16:55:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:40,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:40,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:40,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 16:55:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:40,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 16:55:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:40,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:40,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 16:55:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:40,580 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 16:55:40,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:40,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525508098] [2022-07-22 16:55:40,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525508098] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:40,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:40,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:55:40,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757927883] [2022-07-22 16:55:40,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:40,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:55:40,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:40,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:55:40,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:55:40,582 INFO L87 Difference]: Start difference. First operand 547 states and 881 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:55:42,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:42,578 INFO L93 Difference]: Finished difference Result 1249 states and 2030 transitions. [2022-07-22 16:55:42,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 16:55:42,579 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2022-07-22 16:55:42,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:42,582 INFO L225 Difference]: With dead ends: 1249 [2022-07-22 16:55:42,582 INFO L226 Difference]: Without dead ends: 763 [2022-07-22 16:55:42,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 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 16:55:42,584 INFO L413 NwaCegarLoop]: 774 mSDtfsCounter, 1284 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 2301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:42,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 1618 Invalid, 2301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 1855 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 16:55:42,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2022-07-22 16:55:42,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 547. [2022-07-22 16:55:42,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 429 states have (on average 1.6107226107226107) internal successors, (691), 446 states have internal predecessors, (691), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (93), 89 states have call predecessors, (93), 91 states have call successors, (93) [2022-07-22 16:55:42,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 876 transitions. [2022-07-22 16:55:42,624 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 876 transitions. Word has length 109 [2022-07-22 16:55:42,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:42,624 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 876 transitions. [2022-07-22 16:55:42,624 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:55:42,624 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 876 transitions. [2022-07-22 16:55:42,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-22 16:55:42,627 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:42,627 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:55:42,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 16:55:42,627 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:42,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:42,627 INFO L85 PathProgramCache]: Analyzing trace with hash 25192784, now seen corresponding path program 1 times [2022-07-22 16:55:42,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:42,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638627512] [2022-07-22 16:55:42,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:42,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:55:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:55:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:42,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 16:55:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 16:55:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:55:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 16:55:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 16:55:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:42,798 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 16:55:42,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:42,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638627512] [2022-07-22 16:55:42,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638627512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:42,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:42,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 16:55:42,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518490309] [2022-07-22 16:55:42,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:42,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 16:55:42,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:42,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 16:55:42,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:55:42,800 INFO L87 Difference]: Start difference. First operand 547 states and 876 transitions. Second operand has 9 states, 8 states have (on average 8.625) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:55:45,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:45,732 INFO L93 Difference]: Finished difference Result 1274 states and 2058 transitions. [2022-07-22 16:55:45,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 16:55:45,732 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 110 [2022-07-22 16:55:45,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:45,735 INFO L225 Difference]: With dead ends: 1274 [2022-07-22 16:55:45,736 INFO L226 Difference]: Without dead ends: 800 [2022-07-22 16:55:45,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-07-22 16:55:45,739 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 1324 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 3998 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 2697 SdHoareTripleChecker+Invalid, 4418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 3998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:45,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1371 Valid, 2697 Invalid, 4418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 3998 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 16:55:45,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-07-22 16:55:45,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 553. [2022-07-22 16:55:45,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 435 states have (on average 1.6) internal successors, (696), 452 states have internal predecessors, (696), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (93), 89 states have call predecessors, (93), 91 states have call successors, (93) [2022-07-22 16:55:45,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 881 transitions. [2022-07-22 16:55:45,836 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 881 transitions. Word has length 110 [2022-07-22 16:55:45,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:45,837 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 881 transitions. [2022-07-22 16:55:45,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:55:45,837 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 881 transitions. [2022-07-22 16:55:45,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-22 16:55:45,839 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:45,839 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:55:45,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 16:55:45,839 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:45,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:45,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1583519502, now seen corresponding path program 1 times [2022-07-22 16:55:45,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:45,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897564497] [2022-07-22 16:55:45,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:45,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:45,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:45,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:45,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:55:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:45,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:55:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:45,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:45,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 16:55:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:45,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 16:55:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:45,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:45,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:45,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:55:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:45,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 16:55:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:45,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:45,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 16:55:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:45,990 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 16:55:45,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:45,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897564497] [2022-07-22 16:55:45,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897564497] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:45,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:45,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:55:45,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448731014] [2022-07-22 16:55:45,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:45,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:55:45,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:45,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:55:45,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:55:45,992 INFO L87 Difference]: Start difference. First operand 553 states and 881 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:55:48,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:48,333 INFO L93 Difference]: Finished difference Result 1264 states and 2036 transitions. [2022-07-22 16:55:48,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 16:55:48,333 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2022-07-22 16:55:48,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:48,336 INFO L225 Difference]: With dead ends: 1264 [2022-07-22 16:55:48,337 INFO L226 Difference]: Without dead ends: 772 [2022-07-22 16:55:48,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 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 16:55:48,339 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 1278 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:48,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1325 Valid, 1636 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 1840 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 16:55:48,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2022-07-22 16:55:48,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 553. [2022-07-22 16:55:48,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 435 states have (on average 1.5885057471264368) internal successors, (691), 452 states have internal predecessors, (691), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (93), 89 states have call predecessors, (93), 91 states have call successors, (93) [2022-07-22 16:55:48,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 876 transitions. [2022-07-22 16:55:48,405 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 876 transitions. Word has length 110 [2022-07-22 16:55:48,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:48,405 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 876 transitions. [2022-07-22 16:55:48,405 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:55:48,405 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 876 transitions. [2022-07-22 16:55:48,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 16:55:48,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:48,407 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 16:55:48,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 16:55:48,408 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:48,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:48,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1922365613, now seen corresponding path program 1 times [2022-07-22 16:55:48,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:48,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802054338] [2022-07-22 16:55:48,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:48,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:48,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:48,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:48,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:55:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:48,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:55:48,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:48,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:48,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 16:55:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:48,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 16:55:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:48,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:48,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:48,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 16:55:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:48,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 16:55:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:48,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:48,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 16:55:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:48,593 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 16:55:48,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:48,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802054338] [2022-07-22 16:55:48,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802054338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:48,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:48,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 16:55:48,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712809477] [2022-07-22 16:55:48,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:48,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 16:55:48,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:48,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 16:55:48,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:55:48,596 INFO L87 Difference]: Start difference. First operand 553 states and 876 transitions. Second operand has 9 states, 8 states have (on average 8.75) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:55:51,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:51,281 INFO L93 Difference]: Finished difference Result 1286 states and 2059 transitions. [2022-07-22 16:55:51,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 16:55:51,282 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 111 [2022-07-22 16:55:51,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:51,285 INFO L225 Difference]: With dead ends: 1286 [2022-07-22 16:55:51,285 INFO L226 Difference]: Without dead ends: 809 [2022-07-22 16:55:51,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-07-22 16:55:51,287 INFO L413 NwaCegarLoop]: 774 mSDtfsCounter, 1320 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 3969 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1367 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 4390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 3969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:51,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1367 Valid, 2613 Invalid, 4390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 3969 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 16:55:51,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2022-07-22 16:55:51,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 561. [2022-07-22 16:55:51,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 443 states have (on average 1.5756207674943568) internal successors, (698), 460 states have internal predecessors, (698), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (93), 89 states have call predecessors, (93), 91 states have call successors, (93) [2022-07-22 16:55:51,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 883 transitions. [2022-07-22 16:55:51,362 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 883 transitions. Word has length 111 [2022-07-22 16:55:51,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:51,363 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 883 transitions. [2022-07-22 16:55:51,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:55:51,363 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 883 transitions. [2022-07-22 16:55:51,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 16:55:51,365 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:51,366 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 16:55:51,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 16:55:51,366 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:51,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:51,367 INFO L85 PathProgramCache]: Analyzing trace with hash -304821619, now seen corresponding path program 1 times [2022-07-22 16:55:51,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:51,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626557041] [2022-07-22 16:55:51,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:51,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:51,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:51,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:51,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:55:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:51,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:55:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:51,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:51,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 16:55:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:51,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 16:55:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:51,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:51,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:51,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 16:55:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:51,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 16:55:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:51,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:51,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 16:55:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:51,482 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 16:55:51,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:51,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626557041] [2022-07-22 16:55:51,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626557041] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:51,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:51,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:55:51,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543399724] [2022-07-22 16:55:51,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:51,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:55:51,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:51,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:55:51,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:55:51,484 INFO L87 Difference]: Start difference. First operand 561 states and 883 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:55:53,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:53,906 INFO L93 Difference]: Finished difference Result 1320 states and 2093 transitions. [2022-07-22 16:55:53,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 16:55:53,906 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2022-07-22 16:55:53,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:53,909 INFO L225 Difference]: With dead ends: 1320 [2022-07-22 16:55:53,910 INFO L226 Difference]: Without dead ends: 756 [2022-07-22 16:55:53,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 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 16:55:53,911 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 1234 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1844 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 2251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 1844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:53,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 1673 Invalid, 2251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 1844 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 16:55:53,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2022-07-22 16:55:53,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 542. [2022-07-22 16:55:53,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 427 states have (on average 1.5807962529274004) internal successors, (675), 442 states have internal predecessors, (675), 91 states have call successors, (91), 24 states have call predecessors, (91), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2022-07-22 16:55:53,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 856 transitions. [2022-07-22 16:55:53,953 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 856 transitions. Word has length 111 [2022-07-22 16:55:53,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:53,953 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 856 transitions. [2022-07-22 16:55:53,954 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, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:55:53,954 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 856 transitions. [2022-07-22 16:55:53,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 16:55:53,955 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:53,956 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 16:55:53,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 16:55:53,956 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:53,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:53,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2039414027, now seen corresponding path program 1 times [2022-07-22 16:55:53,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:53,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051166124] [2022-07-22 16:55:53,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:53,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:54,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:54,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:54,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:55:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:54,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 16:55:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:54,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:54,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 16:55:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:54,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 16:55:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:54,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:54,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:54,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 16:55:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:54,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 16:55:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:54,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:54,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 16:55:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:54,088 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 16:55:54,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:54,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051166124] [2022-07-22 16:55:54,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051166124] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:54,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:55:54,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 16:55:54,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296002045] [2022-07-22 16:55:54,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:54,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 16:55:54,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:54,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 16:55:54,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:55:54,090 INFO L87 Difference]: Start difference. First operand 542 states and 856 transitions. Second operand has 9 states, 8 states have (on average 8.875) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:55:57,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:57,310 INFO L93 Difference]: Finished difference Result 1267 states and 2018 transitions. [2022-07-22 16:55:57,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 16:55:57,311 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.875) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2022-07-22 16:55:57,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:57,314 INFO L225 Difference]: With dead ends: 1267 [2022-07-22 16:55:57,314 INFO L226 Difference]: Without dead ends: 789 [2022-07-22 16:55:57,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-07-22 16:55:57,316 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 1284 mSDsluCounter, 1886 mSDsCounter, 0 mSdLazyCounter, 3878 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 2659 SdHoareTripleChecker+Invalid, 4294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 3878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:57,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 2659 Invalid, 4294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 3878 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 16:55:57,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2022-07-22 16:55:57,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 552. [2022-07-22 16:55:57,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 437 states have (on average 1.5675057208237986) internal successors, (685), 452 states have internal predecessors, (685), 91 states have call successors, (91), 24 states have call predecessors, (91), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2022-07-22 16:55:57,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 866 transitions. [2022-07-22 16:55:57,360 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 866 transitions. Word has length 112 [2022-07-22 16:55:57,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:57,360 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 866 transitions. [2022-07-22 16:55:57,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.875) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:55:57,360 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 866 transitions. [2022-07-22 16:55:57,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 16:55:57,362 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:57,362 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:55:57,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 16:55:57,362 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:57,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:57,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1135066562, now seen corresponding path program 1 times [2022-07-22 16:55:57,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:57,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271153549] [2022-07-22 16:55:57,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:57,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:55:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:55:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 16:55:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 16:55:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 16:55:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 16:55:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 16:55:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,490 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 16:55:57,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:57,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271153549] [2022-07-22 16:55:57,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271153549] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:55:57,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848154390] [2022-07-22 16:55:57,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:57,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:55:57,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:55:57,518 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 16:55:57,532 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 16:55:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:57,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 16:55:57,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:55:57,852 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 16:55:57,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:55:57,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848154390] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:57,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:55:57,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-07-22 16:55:57,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557069866] [2022-07-22 16:55:57,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:57,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:55:57,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:57,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:55:57,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:55:57,854 INFO L87 Difference]: Start difference. First operand 552 states and 866 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, (13), 2 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 16:55:58,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:58,235 INFO L93 Difference]: Finished difference Result 1036 states and 1674 transitions. [2022-07-22 16:55:58,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:55:58,236 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, (13), 2 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 16:55:58,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:58,238 INFO L225 Difference]: With dead ends: 1036 [2022-07-22 16:55:58,238 INFO L226 Difference]: Without dead ends: 560 [2022-07-22 16:55:58,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 133 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 16:55:58,241 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 758 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 2007 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:58,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 2007 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 16:55:58,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-07-22 16:55:58,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2022-07-22 16:55:58,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 444 states have (on average 1.5698198198198199) internal successors, (697), 459 states have internal predecessors, (697), 91 states have call successors, (91), 25 states have call predecessors, (91), 24 states have return successors, (91), 88 states have call predecessors, (91), 90 states have call successors, (91) [2022-07-22 16:55:58,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 879 transitions. [2022-07-22 16:55:58,306 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 879 transitions. Word has length 113 [2022-07-22 16:55:58,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:58,307 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 879 transitions. [2022-07-22 16:55:58,307 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, (13), 2 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 16:55:58,307 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 879 transitions. [2022-07-22 16:55:58,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-22 16:55:58,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:58,333 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:55:58,365 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 16:55:58,550 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,SelfDestructingSolverStorable16 [2022-07-22 16:55:58,551 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:58,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:58,551 INFO L85 PathProgramCache]: Analyzing trace with hash -2061669059, now seen corresponding path program 1 times [2022-07-22 16:55:58,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:58,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745450088] [2022-07-22 16:55:58,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:58,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:58,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:58,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:58,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:55:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:58,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:55:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:58,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:58,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 16:55:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:58,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 16:55:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:58,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:58,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:58,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 16:55:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:58,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 16:55:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:58,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:58,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 16:55:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:58,737 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-22 16:55:58,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:58,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745450088] [2022-07-22 16:55:58,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745450088] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:55:58,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180470086] [2022-07-22 16:55:58,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:58,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:55:58,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:55:58,752 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 16:55:58,783 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 16:55:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:58,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 1212 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 16:55:58,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:55:59,036 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-22 16:55:59,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:55:59,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180470086] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:55:59,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:55:59,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-07-22 16:55:59,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480843300] [2022-07-22 16:55:59,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:55:59,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:55:59,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:55:59,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:55:59,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:55:59,038 INFO L87 Difference]: Start difference. First operand 560 states and 879 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, (13), 2 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 16:55:59,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:55:59,418 INFO L93 Difference]: Finished difference Result 1052 states and 1697 transitions. [2022-07-22 16:55:59,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:55:59,418 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 116 [2022-07-22 16:55:59,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:55:59,421 INFO L225 Difference]: With dead ends: 1052 [2022-07-22 16:55:59,421 INFO L226 Difference]: Without dead ends: 568 [2022-07-22 16:55:59,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 136 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 16:55:59,423 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 771 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 2007 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:55:59,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 2007 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 16:55:59,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-07-22 16:55:59,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2022-07-22 16:55:59,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 451 states have (on average 1.5720620842572062) internal successors, (709), 466 states have internal predecessors, (709), 91 states have call successors, (91), 26 states have call predecessors, (91), 25 states have return successors, (92), 88 states have call predecessors, (92), 90 states have call successors, (92) [2022-07-22 16:55:59,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 892 transitions. [2022-07-22 16:55:59,472 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 892 transitions. Word has length 116 [2022-07-22 16:55:59,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:55:59,472 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 892 transitions. [2022-07-22 16:55:59,472 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, (13), 2 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 16:55:59,472 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 892 transitions. [2022-07-22 16:55:59,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-22 16:55:59,475 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:55:59,475 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:55:59,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 16:55:59,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-22 16:55:59,720 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:55:59,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:55:59,721 INFO L85 PathProgramCache]: Analyzing trace with hash -427684002, now seen corresponding path program 1 times [2022-07-22 16:55:59,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:55:59,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370866287] [2022-07-22 16:55:59,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:59,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:55:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:55:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:55:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:55:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:55:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 16:55:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:55:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 16:55:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 16:55:59,856 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 109 [2022-07-22 16:55:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:55:59,858 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-22 16:55:59,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:55:59,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370866287] [2022-07-22 16:55:59,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370866287] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:55:59,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583065568] [2022-07-22 16:55:59,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:55:59,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:55:59,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:55:59,874 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 16:55:59,915 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 16:56:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:00,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 16:56:00,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:00,161 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-22 16:56:00,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:00,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583065568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:00,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:00,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-07-22 16:56:00,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947678333] [2022-07-22 16:56:00,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:00,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:56:00,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:00,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:56:00,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:56:00,164 INFO L87 Difference]: Start difference. First operand 568 states and 892 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, (13), 2 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 16:56:00,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:00,494 INFO L93 Difference]: Finished difference Result 1068 states and 1720 transitions. [2022-07-22 16:56:00,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:56:00,494 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, (13), 2 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 119 [2022-07-22 16:56:00,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:00,496 INFO L225 Difference]: With dead ends: 1068 [2022-07-22 16:56:00,496 INFO L226 Difference]: Without dead ends: 576 [2022-07-22 16:56:00,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 139 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 16:56:00,499 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 759 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 2007 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:00,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 2007 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 16:56:00,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-07-22 16:56:00,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2022-07-22 16:56:00,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 458 states have (on average 1.574235807860262) internal successors, (721), 473 states have internal predecessors, (721), 91 states have call successors, (91), 27 states have call predecessors, (91), 26 states have return successors, (93), 88 states have call predecessors, (93), 90 states have call successors, (93) [2022-07-22 16:56:00,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 905 transitions. [2022-07-22 16:56:00,543 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 905 transitions. Word has length 119 [2022-07-22 16:56:00,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:00,543 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 905 transitions. [2022-07-22 16:56:00,544 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, (13), 2 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 16:56:00,544 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 905 transitions. [2022-07-22 16:56:00,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-22 16:56:00,545 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:00,545 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:00,571 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 16:56:00,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:00,760 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:00,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:00,760 INFO L85 PathProgramCache]: Analyzing trace with hash -33723247, now seen corresponding path program 1 times [2022-07-22 16:56:00,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:00,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941858214] [2022-07-22 16:56:00,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:00,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:00,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:00,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:00,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:00,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:00,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:00,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 16:56:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:00,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:56:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:00,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:00,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:00,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 16:56:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:00,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 16:56:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:00,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:00,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 16:56:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 16:56:00,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:00,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941858214] [2022-07-22 16:56:00,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941858214] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:00,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166528416] [2022-07-22 16:56:00,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:00,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:00,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:00,911 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 16:56:00,913 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 16:56:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 1218 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 16:56:01,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:01,175 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 16:56:01,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:01,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166528416] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:01,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:01,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-07-22 16:56:01,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768357400] [2022-07-22 16:56:01,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:01,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:56:01,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:01,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:56:01,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:56:01,177 INFO L87 Difference]: Start difference. First operand 576 states and 905 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 2 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 16:56:01,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:01,456 INFO L93 Difference]: Finished difference Result 1084 states and 1743 transitions. [2022-07-22 16:56:01,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:56:01,456 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 2 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 122 [2022-07-22 16:56:01,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:01,459 INFO L225 Difference]: With dead ends: 1084 [2022-07-22 16:56:01,459 INFO L226 Difference]: Without dead ends: 584 [2022-07-22 16:56:01,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 142 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 16:56:01,461 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 758 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 2007 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:01,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 2007 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 16:56:01,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-07-22 16:56:01,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2022-07-22 16:56:01,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 465 states have (on average 1.5763440860215054) internal successors, (733), 480 states have internal predecessors, (733), 91 states have call successors, (91), 28 states have call predecessors, (91), 27 states have return successors, (94), 88 states have call predecessors, (94), 90 states have call successors, (94) [2022-07-22 16:56:01,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 918 transitions. [2022-07-22 16:56:01,507 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 918 transitions. Word has length 122 [2022-07-22 16:56:01,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:01,507 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 918 transitions. [2022-07-22 16:56:01,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 2 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 16:56:01,507 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 918 transitions. [2022-07-22 16:56:01,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-22 16:56:01,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:01,509 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:01,527 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 16:56:01,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:01,727 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:01,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:01,727 INFO L85 PathProgramCache]: Analyzing trace with hash -517842182, now seen corresponding path program 1 times [2022-07-22 16:56:01,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:01,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183215987] [2022-07-22 16:56:01,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:01,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:56:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 16:56:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 16:56:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 16:56:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:01,946 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-22 16:56:01,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:01,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183215987] [2022-07-22 16:56:01,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183215987] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:01,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545349015] [2022-07-22 16:56:01,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:01,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:01,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:01,948 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 16:56:01,963 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 16:56:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:02,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:56:02,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:02,232 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 16:56:02,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:02,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545349015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:02,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:02,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 13 [2022-07-22 16:56:02,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090315460] [2022-07-22 16:56:02,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:02,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 16:56:02,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:02,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 16:56:02,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:56:02,235 INFO L87 Difference]: Start difference. First operand 584 states and 918 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:02,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:02,322 INFO L93 Difference]: Finished difference Result 1269 states and 2003 transitions. [2022-07-22 16:56:02,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 16:56:02,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 125 [2022-07-22 16:56:02,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:02,326 INFO L225 Difference]: With dead ends: 1269 [2022-07-22 16:56:02,326 INFO L226 Difference]: Without dead ends: 761 [2022-07-22 16:56:02,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 149 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 16:56:02,328 INFO L413 NwaCegarLoop]: 915 mSDtfsCounter, 536 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 1308 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 16:56:02,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 1308 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:56:02,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-07-22 16:56:02,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 759. [2022-07-22 16:56:02,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 605 states have (on average 1.5388429752066115) internal successors, (931), 618 states have internal predecessors, (931), 113 states have call successors, (113), 42 states have call predecessors, (113), 40 states have return successors, (128), 110 states have call predecessors, (128), 111 states have call successors, (128) [2022-07-22 16:56:02,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1172 transitions. [2022-07-22 16:56:02,390 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1172 transitions. Word has length 125 [2022-07-22 16:56:02,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:02,390 INFO L495 AbstractCegarLoop]: Abstraction has 759 states and 1172 transitions. [2022-07-22 16:56:02,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:02,390 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1172 transitions. [2022-07-22 16:56:02,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-22 16:56:02,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:02,392 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:02,421 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 16:56:02,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:02,608 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:02,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:02,608 INFO L85 PathProgramCache]: Analyzing trace with hash -719666116, now seen corresponding path program 1 times [2022-07-22 16:56:02,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:02,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031348545] [2022-07-22 16:56:02,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:02,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:02,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:02,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:02,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:02,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:02,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:02,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:02,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:56:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:02,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:02,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:02,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 16:56:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:02,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 16:56:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:02,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:02,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 16:56:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:02,790 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-22 16:56:02,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:02,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031348545] [2022-07-22 16:56:02,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031348545] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:02,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454252787] [2022-07-22 16:56:02,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:02,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:02,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:02,792 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 16:56:02,793 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 16:56:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:02,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-22 16:56:02,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:03,098 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 16:56:03,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:03,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454252787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:03,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:03,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2022-07-22 16:56:03,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326044933] [2022-07-22 16:56:03,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:03,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:56:03,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:03,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:56:03,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-07-22 16:56:03,101 INFO L87 Difference]: Start difference. First operand 759 states and 1172 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 16:56:03,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:03,598 INFO L93 Difference]: Finished difference Result 2123 states and 3362 transitions. [2022-07-22 16:56:03,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:56:03,600 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 125 [2022-07-22 16:56:03,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:03,606 INFO L225 Difference]: With dead ends: 2123 [2022-07-22 16:56:03,606 INFO L226 Difference]: Without dead ends: 1441 [2022-07-22 16:56:03,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:56:03,625 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 931 mSDsluCounter, 2688 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 3596 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:03,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 3596 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 16:56:03,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2022-07-22 16:56:03,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1432. [2022-07-22 16:56:03,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1136 states have (on average 1.5554577464788732) internal successors, (1767), 1161 states have internal predecessors, (1767), 217 states have call successors, (217), 80 states have call predecessors, (217), 78 states have return successors, (265), 214 states have call predecessors, (265), 213 states have call successors, (265) [2022-07-22 16:56:03,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 2249 transitions. [2022-07-22 16:56:03,796 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 2249 transitions. Word has length 125 [2022-07-22 16:56:03,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:03,796 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 2249 transitions. [2022-07-22 16:56:03,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 16:56:03,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 2249 transitions. [2022-07-22 16:56:03,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-22 16:56:03,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:03,798 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 16:56:03,817 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 16:56:04,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:04,011 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:04,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:04,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1839604388, now seen corresponding path program 1 times [2022-07-22 16:56:04,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:04,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684050957] [2022-07-22 16:56:04,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:04,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:56:04,224 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 1 [2022-07-22 16:56:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:56:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 16:56:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 16:56:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 16:56:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,240 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 16:56:04,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:04,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684050957] [2022-07-22 16:56:04,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684050957] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:04,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989267162] [2022-07-22 16:56:04,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:04,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:04,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:04,246 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 16:56:04,247 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 16:56:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:04,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-22 16:56:04,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:04,532 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 16:56:04,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:04,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989267162] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:04,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:04,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-22 16:56:04,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731967782] [2022-07-22 16:56:04,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:04,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:56:04,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:04,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:56:04,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:56:04,534 INFO L87 Difference]: Start difference. First operand 1432 states and 2249 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 16:56:04,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:04,894 INFO L93 Difference]: Finished difference Result 2805 states and 4467 transitions. [2022-07-22 16:56:04,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:56:04,894 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 16:56:04,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:04,900 INFO L225 Difference]: With dead ends: 2805 [2022-07-22 16:56:04,900 INFO L226 Difference]: Without dead ends: 1450 [2022-07-22 16:56:04,904 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 16:56:04,905 INFO L413 NwaCegarLoop]: 910 mSDtfsCounter, 743 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 3282 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:04,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 3282 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 16:56:04,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2022-07-22 16:56:05,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1442. [2022-07-22 16:56:05,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 1142 states have (on average 1.552539404553415) internal successors, (1773), 1170 states have internal predecessors, (1773), 219 states have call successors, (219), 81 states have call predecessors, (219), 80 states have return successors, (275), 214 states have call predecessors, (275), 215 states have call successors, (275) [2022-07-22 16:56:05,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 2267 transitions. [2022-07-22 16:56:05,044 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 2267 transitions. Word has length 127 [2022-07-22 16:56:05,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:05,045 INFO L495 AbstractCegarLoop]: Abstraction has 1442 states and 2267 transitions. [2022-07-22 16:56:05,045 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 16:56:05,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 2267 transitions. [2022-07-22 16:56:05,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-22 16:56:05,047 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:05,047 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 16:56:05,087 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 16:56:05,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:05,265 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:05,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:05,266 INFO L85 PathProgramCache]: Analyzing trace with hash 85788211, now seen corresponding path program 1 times [2022-07-22 16:56:05,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:05,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019018150] [2022-07-22 16:56:05,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:05,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:05,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:05,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:05,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:05,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:05,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:05,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:05,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:56:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:05,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:05,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:05,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:56:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:05,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 16:56:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:05,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:56:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:05,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 16:56:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:05,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:05,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 16:56:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:05,463 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 16:56:05,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:05,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019018150] [2022-07-22 16:56:05,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019018150] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:05,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298594752] [2022-07-22 16:56:05,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:05,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:05,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:05,465 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 16:56:05,466 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 16:56:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:05,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 1237 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 16:56:05,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:05,653 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 16:56:05,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:05,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298594752] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:05,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:05,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-07-22 16:56:05,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907539090] [2022-07-22 16:56:05,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:05,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 16:56:05,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:05,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 16:56:05,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:56:05,655 INFO L87 Difference]: Start difference. First operand 1442 states and 2267 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 16:56:05,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:05,818 INFO L93 Difference]: Finished difference Result 3479 states and 5558 transitions. [2022-07-22 16:56:05,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 16:56:05,819 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 16:56:05,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:05,826 INFO L225 Difference]: With dead ends: 3479 [2022-07-22 16:56:05,827 INFO L226 Difference]: Without dead ends: 2116 [2022-07-22 16:56:05,831 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 16:56:05,832 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 755 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 2345 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 16:56:05,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 2345 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:56:05,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2022-07-22 16:56:05,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 1442. [2022-07-22 16:56:05,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 1142 states have (on average 1.5516637478108581) internal successors, (1772), 1170 states have internal predecessors, (1772), 219 states have call successors, (219), 81 states have call predecessors, (219), 80 states have return successors, (275), 214 states have call predecessors, (275), 215 states have call successors, (275) [2022-07-22 16:56:05,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 2266 transitions. [2022-07-22 16:56:05,980 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 2266 transitions. Word has length 132 [2022-07-22 16:56:05,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:05,980 INFO L495 AbstractCegarLoop]: Abstraction has 1442 states and 2266 transitions. [2022-07-22 16:56:05,981 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 16:56:05,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 2266 transitions. [2022-07-22 16:56:05,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-22 16:56:05,982 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:05,982 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 16:56:06,001 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 16:56:06,184 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,SelfDestructingSolverStorable23 [2022-07-22 16:56:06,184 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:06,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:06,184 INFO L85 PathProgramCache]: Analyzing trace with hash 787388085, now seen corresponding path program 1 times [2022-07-22 16:56:06,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:06,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668351213] [2022-07-22 16:56:06,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:06,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:56:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:56:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 16:56:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:56:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 16:56:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 16:56:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,400 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 16:56:06,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:06,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668351213] [2022-07-22 16:56:06,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668351213] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:06,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698620068] [2022-07-22 16:56:06,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:06,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:06,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:06,402 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 16:56:06,459 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 16:56:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:06,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 16:56:06,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:06,725 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 16:56:06,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:06,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698620068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:06,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:06,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-22 16:56:06,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346911261] [2022-07-22 16:56:06,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:06,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:56:06,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:06,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:56:06,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:56:06,732 INFO L87 Difference]: Start difference. First operand 1442 states and 2266 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 16:56:06,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:06,882 INFO L93 Difference]: Finished difference Result 2815 states and 4488 transitions. [2022-07-22 16:56:06,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:56:06,887 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 16:56:06,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:06,893 INFO L225 Difference]: With dead ends: 2815 [2022-07-22 16:56:06,893 INFO L226 Difference]: Without dead ends: 1454 [2022-07-22 16:56:06,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-07-22 16:56:06,897 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 354 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 3370 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:06,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 3370 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:56:06,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2022-07-22 16:56:07,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1442. [2022-07-22 16:56:07,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 1142 states have (on average 1.5481611208406305) internal successors, (1768), 1170 states have internal predecessors, (1768), 219 states have call successors, (219), 81 states have call predecessors, (219), 80 states have return successors, (275), 214 states have call predecessors, (275), 215 states have call successors, (275) [2022-07-22 16:56:07,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 2262 transitions. [2022-07-22 16:56:07,044 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 2262 transitions. Word has length 132 [2022-07-22 16:56:07,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:07,045 INFO L495 AbstractCegarLoop]: Abstraction has 1442 states and 2262 transitions. [2022-07-22 16:56:07,045 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 16:56:07,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 2262 transitions. [2022-07-22 16:56:07,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-22 16:56:07,047 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:07,047 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 16:56:07,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-22 16:56:07,248 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,SelfDestructingSolverStorable24 [2022-07-22 16:56:07,248 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:07,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:07,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1914532507, now seen corresponding path program 1 times [2022-07-22 16:56:07,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:07,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725461327] [2022-07-22 16:56:07,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:07,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 16:56:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:56:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 16:56:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 16:56:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 16:56:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 16:56:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 16:56:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-22 16:56:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-22 16:56:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,461 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 16:56:07,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:07,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725461327] [2022-07-22 16:56:07,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725461327] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:07,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216792090] [2022-07-22 16:56:07,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:07,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:07,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:07,463 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 16:56:07,465 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 16:56:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:07,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 1328 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:56:07,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:07,684 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 16:56:07,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:07,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216792090] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:07,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:07,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-07-22 16:56:07,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903950325] [2022-07-22 16:56:07,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:07,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:56:07,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:07,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:56:07,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:56:07,686 INFO L87 Difference]: Start difference. First operand 1442 states and 2262 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 16:56:07,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:07,903 INFO L93 Difference]: Finished difference Result 2884 states and 4592 transitions. [2022-07-22 16:56:07,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:56:07,904 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 16:56:07,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:07,911 INFO L225 Difference]: With dead ends: 2884 [2022-07-22 16:56:07,911 INFO L226 Difference]: Without dead ends: 1520 [2022-07-22 16:56:07,916 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 16:56:07,917 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 213 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2208 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 16:56:07,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 2208 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:56:07,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2022-07-22 16:56:08,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1520. [2022-07-22 16:56:08,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1218 states have (on average 1.5714285714285714) internal successors, (1914), 1246 states have internal predecessors, (1914), 219 states have call successors, (219), 83 states have call predecessors, (219), 82 states have return successors, (275), 214 states have call predecessors, (275), 215 states have call successors, (275) [2022-07-22 16:56:08,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 2408 transitions. [2022-07-22 16:56:08,031 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 2408 transitions. Word has length 155 [2022-07-22 16:56:08,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:08,032 INFO L495 AbstractCegarLoop]: Abstraction has 1520 states and 2408 transitions. [2022-07-22 16:56:08,032 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 16:56:08,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 2408 transitions. [2022-07-22 16:56:08,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-22 16:56:08,034 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:08,034 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 16:56:08,053 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 16:56:08,253 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,SelfDestructingSolverStorable25 [2022-07-22 16:56:08,253 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:08,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:08,253 INFO L85 PathProgramCache]: Analyzing trace with hash 961042028, now seen corresponding path program 1 times [2022-07-22 16:56:08,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:08,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965984508] [2022-07-22 16:56:08,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:08,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 16:56:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:56:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 16:56:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 16:56:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 16:56:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 16:56:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 16:56:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 16:56:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 16:56:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,440 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 16:56:08,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:08,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965984508] [2022-07-22 16:56:08,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965984508] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:08,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218289787] [2022-07-22 16:56:08,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:08,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:08,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:08,447 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 16:56:08,448 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 16:56:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:08,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:56:08,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:08,664 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 16:56:08,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:08,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218289787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:08,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:08,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-07-22 16:56:08,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274372569] [2022-07-22 16:56:08,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:08,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:56:08,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:08,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:56:08,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:56:08,666 INFO L87 Difference]: Start difference. First operand 1520 states and 2408 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 16:56:08,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:08,905 INFO L93 Difference]: Finished difference Result 3040 states and 4882 transitions. [2022-07-22 16:56:08,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:56:08,906 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 16:56:08,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:08,912 INFO L225 Difference]: With dead ends: 3040 [2022-07-22 16:56:08,912 INFO L226 Difference]: Without dead ends: 1598 [2022-07-22 16:56:08,915 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 16:56:08,916 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 211 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 2208 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 16:56:08,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 2208 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:56:08,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2022-07-22 16:56:09,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1598. [2022-07-22 16:56:09,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1294 states have (on average 1.5919629057187017) internal successors, (2060), 1322 states have internal predecessors, (2060), 219 states have call successors, (219), 85 states have call predecessors, (219), 84 states have return successors, (275), 214 states have call predecessors, (275), 215 states have call successors, (275) [2022-07-22 16:56:09,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2554 transitions. [2022-07-22 16:56:09,031 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2554 transitions. Word has length 160 [2022-07-22 16:56:09,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:09,031 INFO L495 AbstractCegarLoop]: Abstraction has 1598 states and 2554 transitions. [2022-07-22 16:56:09,031 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 16:56:09,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2554 transitions. [2022-07-22 16:56:09,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-22 16:56:09,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:09,034 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 16:56:09,052 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 16:56:09,247 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,SelfDestructingSolverStorable26 [2022-07-22 16:56:09,247 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:09,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:09,247 INFO L85 PathProgramCache]: Analyzing trace with hash -272186404, now seen corresponding path program 1 times [2022-07-22 16:56:09,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:09,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297660766] [2022-07-22 16:56:09,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:09,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 16:56:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:56:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 16:56:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 16:56:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 16:56:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 16:56:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-22 16:56:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-22 16:56:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-22 16:56:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,429 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 16:56:09,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:09,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297660766] [2022-07-22 16:56:09,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297660766] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:09,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20727996] [2022-07-22 16:56:09,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:09,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:09,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:09,444 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 16:56:09,445 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 16:56:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 1337 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:56:09,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:09,668 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 16:56:09,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:09,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20727996] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:09,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:09,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-07-22 16:56:09,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433574999] [2022-07-22 16:56:09,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:09,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:56:09,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:09,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:56:09,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:56:09,670 INFO L87 Difference]: Start difference. First operand 1598 states and 2554 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 16:56:09,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:09,889 INFO L93 Difference]: Finished difference Result 3196 states and 5172 transitions. [2022-07-22 16:56:09,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:56:09,890 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 16:56:09,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:09,896 INFO L225 Difference]: With dead ends: 3196 [2022-07-22 16:56:09,896 INFO L226 Difference]: Without dead ends: 1676 [2022-07-22 16:56:09,900 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 16:56:09,900 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 209 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 2208 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 16:56:09,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 2208 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:56:09,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2022-07-22 16:56:10,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1676. [2022-07-22 16:56:10,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 1370 states have (on average 1.6102189781021898) internal successors, (2206), 1398 states have internal predecessors, (2206), 219 states have call successors, (219), 87 states have call predecessors, (219), 86 states have return successors, (275), 214 states have call predecessors, (275), 215 states have call successors, (275) [2022-07-22 16:56:10,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2700 transitions. [2022-07-22 16:56:10,034 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2700 transitions. Word has length 164 [2022-07-22 16:56:10,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:10,034 INFO L495 AbstractCegarLoop]: Abstraction has 1676 states and 2700 transitions. [2022-07-22 16:56:10,035 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 16:56:10,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2700 transitions. [2022-07-22 16:56:10,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 16:56:10,037 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:10,038 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 16:56:10,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 16:56:10,258 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,SelfDestructingSolverStorable27 [2022-07-22 16:56:10,258 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:10,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:10,259 INFO L85 PathProgramCache]: Analyzing trace with hash -224721989, now seen corresponding path program 1 times [2022-07-22 16:56:10,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:10,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873146230] [2022-07-22 16:56:10,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:10,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:10,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:10,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:10,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:10,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:10,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:10,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:10,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 16:56:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:10,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:56:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:10,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 16:56:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:10,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 16:56:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:10,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 16:56:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:10,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 16:56:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:10,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 16:56:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:10,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 16:56:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:10,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:10,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 16:56:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:10,452 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 16:56:10,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:10,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873146230] [2022-07-22 16:56:10,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873146230] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:10,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362076316] [2022-07-22 16:56:10,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:10,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:10,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:10,455 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 16:56:10,457 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 16:56:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:10,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 1340 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:56:10,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:10,671 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 16:56:10,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:10,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362076316] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:10,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:10,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-07-22 16:56:10,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661820918] [2022-07-22 16:56:10,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:10,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:56:10,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:10,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:56:10,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:56:10,672 INFO L87 Difference]: Start difference. First operand 1676 states and 2700 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 16:56:10,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:10,888 INFO L93 Difference]: Finished difference Result 3352 states and 5462 transitions. [2022-07-22 16:56:10,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:56:10,888 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 16:56:10,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:10,894 INFO L225 Difference]: With dead ends: 3352 [2022-07-22 16:56:10,894 INFO L226 Difference]: Without dead ends: 1754 [2022-07-22 16:56:10,897 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 16:56:10,898 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 207 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 2208 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 16:56:10,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 2208 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:56:10,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2022-07-22 16:56:11,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1754. [2022-07-22 16:56:11,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1446 states have (on average 1.6265560165975104) internal successors, (2352), 1474 states have internal predecessors, (2352), 219 states have call successors, (219), 89 states have call predecessors, (219), 88 states have return successors, (275), 214 states have call predecessors, (275), 215 states have call successors, (275) [2022-07-22 16:56:11,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 2846 transitions. [2022-07-22 16:56:11,014 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 2846 transitions. Word has length 167 [2022-07-22 16:56:11,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:11,014 INFO L495 AbstractCegarLoop]: Abstraction has 1754 states and 2846 transitions. [2022-07-22 16:56:11,014 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 16:56:11,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 2846 transitions. [2022-07-22 16:56:11,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-22 16:56:11,017 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:11,017 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 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] [2022-07-22 16:56:11,052 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 16:56:11,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-22 16:56:11,236 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:11,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:11,236 INFO L85 PathProgramCache]: Analyzing trace with hash -431239223, now seen corresponding path program 1 times [2022-07-22 16:56:11,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:11,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291225744] [2022-07-22 16:56:11,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:11,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 16:56:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:56:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 16:56:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 16:56:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 16:56:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 16:56:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 16:56:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 16:56:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-22 16:56:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,430 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 16:56:11,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:11,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291225744] [2022-07-22 16:56:11,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291225744] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:11,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976235703] [2022-07-22 16:56:11,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:11,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:11,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:11,446 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 16:56:11,449 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 16:56:11,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:11,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:56:11,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-22 16:56:11,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:11,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976235703] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:11,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:11,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-07-22 16:56:11,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853099394] [2022-07-22 16:56:11,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:11,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:56:11,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:11,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:56:11,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:56:11,663 INFO L87 Difference]: Start difference. First operand 1754 states and 2846 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), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:56:11,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:11,814 INFO L93 Difference]: Finished difference Result 3492 states and 5737 transitions. [2022-07-22 16:56:11,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:56:11,815 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), 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 16:56:11,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:11,821 INFO L225 Difference]: With dead ends: 3492 [2022-07-22 16:56:11,821 INFO L226 Difference]: Without dead ends: 1816 [2022-07-22 16:56:11,826 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 16:56:11,826 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 69 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 2439 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 16:56:11,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 2439 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:56:11,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2022-07-22 16:56:11,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 1762. [2022-07-22 16:56:11,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1762 states, 1454 states have (on average 1.623108665749656) internal successors, (2360), 1482 states have internal predecessors, (2360), 219 states have call successors, (219), 89 states have call predecessors, (219), 88 states have return successors, (275), 214 states have call predecessors, (275), 215 states have call successors, (275) [2022-07-22 16:56:11,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2854 transitions. [2022-07-22 16:56:11,944 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 2854 transitions. Word has length 169 [2022-07-22 16:56:11,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:11,945 INFO L495 AbstractCegarLoop]: Abstraction has 1762 states and 2854 transitions. [2022-07-22 16:56:11,945 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), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:56:11,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 2854 transitions. [2022-07-22 16:56:11,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-22 16:56:11,948 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:11,948 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 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] [2022-07-22 16:56:11,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-22 16:56:12,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:12,162 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:12,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:12,162 INFO L85 PathProgramCache]: Analyzing trace with hash -330209017, now seen corresponding path program 1 times [2022-07-22 16:56:12,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:12,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289482492] [2022-07-22 16:56:12,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:12,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 16:56:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 16:56:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 16:56:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 16:56:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 16:56:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-22 16:56:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 16:56:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-22 16:56:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-22 16:56:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,325 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-22 16:56:12,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:12,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289482492] [2022-07-22 16:56:12,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289482492] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:12,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158040692] [2022-07-22 16:56:12,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:12,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:12,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:12,328 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 16:56:12,329 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 16:56:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:12,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-22 16:56:12,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-22 16:56:12,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:56:12,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158040692] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:12,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:56:12,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-07-22 16:56:12,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530786685] [2022-07-22 16:56:12,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:12,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 16:56:12,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:12,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 16:56:12,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:56:12,730 INFO L87 Difference]: Start difference. First operand 1762 states and 2854 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 7 states have internal predecessors, (110), 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 16:56:14,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:14,434 INFO L93 Difference]: Finished difference Result 5435 states and 9009 transitions. [2022-07-22 16:56:14,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 16:56:14,434 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 7 states have internal predecessors, (110), 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 175 [2022-07-22 16:56:14,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:14,483 INFO L225 Difference]: With dead ends: 5435 [2022-07-22 16:56:14,483 INFO L226 Difference]: Without dead ends: 3379 [2022-07-22 16:56:14,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 202 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 16:56:14,503 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 1820 mSDsluCounter, 2004 mSDsCounter, 0 mSdLazyCounter, 3704 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1917 SdHoareTripleChecker+Valid, 2750 SdHoareTripleChecker+Invalid, 4174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 3704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:14,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1917 Valid, 2750 Invalid, 4174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 3704 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 16:56:14,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3379 states. [2022-07-22 16:56:14,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3379 to 3299. [2022-07-22 16:56:14,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3299 states, 2664 states have (on average 1.640015015015015) internal successors, (4369), 2746 states have internal predecessors, (4369), 455 states have call successors, (455), 159 states have call predecessors, (455), 179 states have return successors, (599), 451 states have call predecessors, (599), 451 states have call successors, (599) [2022-07-22 16:56:14,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 5423 transitions. [2022-07-22 16:56:14,859 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 5423 transitions. Word has length 175 [2022-07-22 16:56:14,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:14,860 INFO L495 AbstractCegarLoop]: Abstraction has 3299 states and 5423 transitions. [2022-07-22 16:56:14,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 7 states have internal predecessors, (110), 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 16:56:14,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 5423 transitions. [2022-07-22 16:56:14,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-22 16:56:14,866 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:14,867 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 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] [2022-07-22 16:56:14,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-22 16:56:15,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:15,085 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:15,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:15,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1355098377, now seen corresponding path program 1 times [2022-07-22 16:56:15,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:15,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515780014] [2022-07-22 16:56:15,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:15,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 16:56:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 16:56:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 16:56:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 16:56:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 16:56:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-22 16:56:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 16:56:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-22 16:56:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-22 16:56:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:15,281 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-22 16:56:15,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:15,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515780014] [2022-07-22 16:56:15,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515780014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:15,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:15,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 16:56:15,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097581485] [2022-07-22 16:56:15,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:15,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 16:56:15,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:15,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 16:56:15,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:56:15,283 INFO L87 Difference]: Start difference. First operand 3299 states and 5423 transitions. Second operand has 9 states, 8 states have (on average 13.25) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 16:56:18,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:18,264 INFO L93 Difference]: Finished difference Result 7491 states and 12473 transitions. [2022-07-22 16:56:18,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 16:56:18,265 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.25) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 175 [2022-07-22 16:56:18,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:18,281 INFO L225 Difference]: With dead ends: 7491 [2022-07-22 16:56:18,282 INFO L226 Difference]: Without dead ends: 4206 [2022-07-22 16:56:18,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-07-22 16:56:18,291 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 761 mSDsluCounter, 2500 mSDsCounter, 0 mSdLazyCounter, 3184 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 3310 SdHoareTripleChecker+Invalid, 3355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 3184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:18,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 3310 Invalid, 3355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 3184 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 16:56:18,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4206 states. [2022-07-22 16:56:18,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4206 to 3313. [2022-07-22 16:56:18,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3313 states, 2678 states have (on average 1.628080657206871) internal successors, (4360), 2760 states have internal predecessors, (4360), 455 states have call successors, (455), 159 states have call predecessors, (455), 179 states have return successors, (599), 451 states have call predecessors, (599), 451 states have call successors, (599) [2022-07-22 16:56:18,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3313 states to 3313 states and 5414 transitions. [2022-07-22 16:56:18,592 INFO L78 Accepts]: Start accepts. Automaton has 3313 states and 5414 transitions. Word has length 175 [2022-07-22 16:56:18,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:18,593 INFO L495 AbstractCegarLoop]: Abstraction has 3313 states and 5414 transitions. [2022-07-22 16:56:18,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.25) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 16:56:18,593 INFO L276 IsEmpty]: Start isEmpty. Operand 3313 states and 5414 transitions. [2022-07-22 16:56:18,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-07-22 16:56:18,600 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:18,600 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 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 16:56:18,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-22 16:56:18,634 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:18,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:18,634 INFO L85 PathProgramCache]: Analyzing trace with hash -377214621, now seen corresponding path program 1 times [2022-07-22 16:56:18,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:18,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893330117] [2022-07-22 16:56:18,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:18,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 16:56:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 16:56:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 16:56:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 16:56:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 16:56:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 16:56:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 16:56:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 16:56:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-22 16:56:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-22 16:56:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-22 16:56:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:18,786 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-22 16:56:18,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:18,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893330117] [2022-07-22 16:56:18,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893330117] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:18,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:18,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 16:56:18,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613216301] [2022-07-22 16:56:18,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:18,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 16:56:18,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:18,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 16:56:18,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:56:18,805 INFO L87 Difference]: Start difference. First operand 3313 states and 5414 transitions. Second operand has 9 states, 8 states have (on average 14.0) internal successors, (112), 6 states have internal predecessors, (112), 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 16:56:21,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:21,959 INFO L93 Difference]: Finished difference Result 7159 states and 11985 transitions. [2022-07-22 16:56:21,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 16:56:21,960 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 14.0) internal successors, (112), 6 states have internal predecessors, (112), 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 181 [2022-07-22 16:56:21,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:21,974 INFO L225 Difference]: With dead ends: 7159 [2022-07-22 16:56:21,975 INFO L226 Difference]: Without dead ends: 3730 [2022-07-22 16:56:21,983 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 16:56:21,984 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 1357 mSDsluCounter, 2434 mSDsCounter, 0 mSdLazyCounter, 3054 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 3256 SdHoareTripleChecker+Invalid, 3399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 3054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:21,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1461 Valid, 3256 Invalid, 3399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 3054 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 16:56:21,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3730 states. [2022-07-22 16:56:22,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3730 to 2926. [2022-07-22 16:56:22,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2391 states have (on average 1.6729401923881222) internal successors, (4000), 2460 states have internal predecessors, (4000), 375 states have call successors, (375), 147 states have call predecessors, (375), 159 states have return successors, (469), 366 states have call predecessors, (469), 371 states have call successors, (469) [2022-07-22 16:56:22,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 4844 transitions. [2022-07-22 16:56:22,308 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 4844 transitions. Word has length 181 [2022-07-22 16:56:22,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:22,308 INFO L495 AbstractCegarLoop]: Abstraction has 2926 states and 4844 transitions. [2022-07-22 16:56:22,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 14.0) internal successors, (112), 6 states have internal predecessors, (112), 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 16:56:22,309 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 4844 transitions. [2022-07-22 16:56:22,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2022-07-22 16:56:22,319 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:22,320 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 16:56:22,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-22 16:56:22,320 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:22,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:22,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1648658740, now seen corresponding path program 1 times [2022-07-22 16:56:22,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:22,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420036944] [2022-07-22 16:56:22,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:22,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:56:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:56:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 16:56:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:56:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 16:56:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:56:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:56:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 16:56:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:56:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 16:56:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:56:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 16:56:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:56:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:56:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-22 16:56:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:56:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:56:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 16:56:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:56:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:56:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 16:56:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 16:56:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 16:56:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 16:56:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-07-22 16:56:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-07-22 16:56:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-07-22 16:56:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-07-22 16:56:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-07-22 16:56:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-07-22 16:56:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-07-22 16:56:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-07-22 16:56:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-07-22 16:56:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-07-22 16:56:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-07-22 16:56:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-07-22 16:56:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:22,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1193 backedges. 66 proven. 121 refuted. 0 times theorem prover too weak. 1006 trivial. 0 not checked. [2022-07-22 16:56:22,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:22,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420036944] [2022-07-22 16:56:22,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420036944] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:56:22,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618206120] [2022-07-22 16:56:22,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:22,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:56:22,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:22,825 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 16:56:22,826 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 16:56:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 3290 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 16:56:23,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:56:23,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1193 backedges. 659 proven. 17 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2022-07-22 16:56:23,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 16:56:24,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1193 backedges. 82 proven. 71 refuted. 0 times theorem prover too weak. 1040 trivial. 0 not checked. [2022-07-22 16:56:24,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618206120] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 16:56:24,377 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 16:56:24,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 14] total 35 [2022-07-22 16:56:24,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822235002] [2022-07-22 16:56:24,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 16:56:24,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-22 16:56:24,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:24,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-22 16:56:24,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1055, Unknown=0, NotChecked=0, Total=1190 [2022-07-22 16:56:24,379 INFO L87 Difference]: Start difference. First operand 2926 states and 4844 transitions. Second operand has 35 states, 33 states have (on average 14.424242424242424) internal successors, (476), 26 states have internal predecessors, (476), 19 states have call successors, (113), 12 states have call predecessors, (113), 15 states have return successors, (112), 23 states have call predecessors, (112), 19 states have call successors, (112)