./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 ff03de63 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-dev-ff03de6 [2021-12-21 12:53:27,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 12:53:27,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 12:53:27,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 12:53:27,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 12:53:27,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 12:53:27,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 12:53:27,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 12:53:27,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 12:53:27,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 12:53:27,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 12:53:27,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 12:53:27,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 12:53:27,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 12:53:27,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 12:53:27,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 12:53:27,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 12:53:27,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 12:53:27,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 12:53:27,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 12:53:27,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 12:53:27,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 12:53:27,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 12:53:27,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 12:53:27,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 12:53:27,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 12:53:27,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 12:53:27,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 12:53:27,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 12:53:27,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 12:53:27,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 12:53:27,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 12:53:27,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 12:53:27,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 12:53:27,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 12:53:27,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 12:53:27,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 12:53:27,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 12:53:27,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 12:53:27,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 12:53:27,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 12:53:27,698 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 12:53:27,729 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 12:53:27,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 12:53:27,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 12:53:27,730 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 12:53:27,730 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 12:53:27,731 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 12:53:27,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 12:53:27,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 12:53:27,731 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 12:53:27,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 12:53:27,732 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 12:53:27,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 12:53:27,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 12:53:27,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 12:53:27,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 12:53:27,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 12:53:27,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 12:53:27,733 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 12:53:27,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 12:53:27,733 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 12:53:27,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 12:53:27,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 12:53:27,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 12:53:27,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 12:53:27,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:53:27,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 12:53:27,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 12:53:27,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 12:53:27,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 12:53:27,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 12:53:27,736 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 12:53:27,736 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 12:53:27,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 12:53:27,736 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 12:53:27,736 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ed4163e8f042a84d9cdccd4fee3ee0ba89fdce83cd991779acec4a51d9a650c [2021-12-21 12:53:27,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 12:53:27,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 12:53:27,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 12:53:27,961 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 12:53:27,962 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 12:53:27,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec14_product03.cil.c [2021-12-21 12:53:28,018 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58af51e82/f1c433246a1c4a2a9c40fa6f055c1260/FLAG66662c011 [2021-12-21 12:53:28,444 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 12:53:28,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec14_product03.cil.c [2021-12-21 12:53:28,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58af51e82/f1c433246a1c4a2a9c40fa6f055c1260/FLAG66662c011 [2021-12-21 12:53:28,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58af51e82/f1c433246a1c4a2a9c40fa6f055c1260 [2021-12-21 12:53:28,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 12:53:28,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 12:53:28,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 12:53:28,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 12:53:28,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 12:53:28,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:53:28" (1/1) ... [2021-12-21 12:53:28,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f54ef36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:28, skipping insertion in model container [2021-12-21 12:53:28,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:53:28" (1/1) ... [2021-12-21 12:53:28,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 12:53:28,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 12:53:29,079 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] [2021-12-21 12:53:29,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:53:29,090 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 12:53:29,180 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] [2021-12-21 12:53:29,181 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:53:29,195 INFO L208 MainTranslator]: Completed translation [2021-12-21 12:53:29,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:29 WrapperNode [2021-12-21 12:53:29,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 12:53:29,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 12:53:29,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 12:53:29,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 12:53:29,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:29" (1/1) ... [2021-12-21 12:53:29,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:29" (1/1) ... [2021-12-21 12:53:29,251 INFO L137 Inliner]: procedures = 89, calls = 329, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 1003 [2021-12-21 12:53:29,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 12:53:29,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 12:53:29,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 12:53:29,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 12:53:29,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:29" (1/1) ... [2021-12-21 12:53:29,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:29" (1/1) ... [2021-12-21 12:53:29,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:29" (1/1) ... [2021-12-21 12:53:29,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:29" (1/1) ... [2021-12-21 12:53:29,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:29" (1/1) ... [2021-12-21 12:53:29,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:29" (1/1) ... [2021-12-21 12:53:29,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:29" (1/1) ... [2021-12-21 12:53:29,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 12:53:29,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 12:53:29,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 12:53:29,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 12:53:29,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:29" (1/1) ... [2021-12-21 12:53:29,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:53:29,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:29,328 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) [2021-12-21 12:53:29,329 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 [2021-12-21 12:53:29,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 12:53:29,352 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-12-21 12:53:29,352 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-12-21 12:53:29,352 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-21 12:53:29,352 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-21 12:53:29,352 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2021-12-21 12:53:29,352 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2021-12-21 12:53:29,352 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-21 12:53:29,352 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-21 12:53:29,353 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2021-12-21 12:53:29,353 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2021-12-21 12:53:29,353 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-21 12:53:29,353 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-21 12:53:29,353 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-21 12:53:29,353 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-21 12:53:29,353 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-21 12:53:29,353 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-21 12:53:29,354 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-21 12:53:29,354 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-21 12:53:29,354 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-21 12:53:29,354 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-21 12:53:29,354 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-21 12:53:29,354 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-21 12:53:29,354 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-12-21 12:53:29,354 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-12-21 12:53:29,354 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-21 12:53:29,355 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-21 12:53:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-21 12:53:29,355 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-21 12:53:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-21 12:53:29,355 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-21 12:53:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-21 12:53:29,355 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-21 12:53:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-21 12:53:29,356 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-21 12:53:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2021-12-21 12:53:29,356 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2021-12-21 12:53:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 12:53:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-21 12:53:29,356 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-21 12:53:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-21 12:53:29,356 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-21 12:53:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-21 12:53:29,357 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-21 12:53:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 12:53:29,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 12:53:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-21 12:53:29,357 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-21 12:53:29,501 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 12:53:29,503 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 12:53:30,153 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 12:53:30,165 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 12:53:30,166 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 12:53:30,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:53:30 BoogieIcfgContainer [2021-12-21 12:53:30,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 12:53:30,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 12:53:30,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 12:53:30,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 12:53:30,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:53:28" (1/3) ... [2021-12-21 12:53:30,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a2868f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:53:30, skipping insertion in model container [2021-12-21 12:53:30,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:29" (2/3) ... [2021-12-21 12:53:30,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a2868f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:53:30, skipping insertion in model container [2021-12-21 12:53:30,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:53:30" (3/3) ... [2021-12-21 12:53:30,174 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product03.cil.c [2021-12-21 12:53:30,177 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 12:53:30,178 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 12:53:30,221 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 12:53:30,225 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 12:53:30,225 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 12:53:30,244 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) [2021-12-21 12:53:30,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-21 12:53:30,260 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:30,261 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:53:30,262 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:30,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:30,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1965651267, now seen corresponding path program 1 times [2021-12-21 12:53:30,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:30,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844609962] [2021-12-21 12:53:30,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:30,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:53:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 12:53:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 12:53:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 12:53:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 12:53:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,782 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 12:53:30,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:30,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844609962] [2021-12-21 12:53:30,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844609962] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:30,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:53:30,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 12:53:30,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874584282] [2021-12-21 12:53:30,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:30,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:53:30,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:30,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:53:30,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:53:30,829 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) [2021-12-21 12:53:33,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:33,681 INFO L93 Difference]: Finished difference Result 1231 states and 2072 transitions. [2021-12-21 12:53:33,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 12:53:33,683 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 [2021-12-21 12:53:33,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:33,694 INFO L225 Difference]: With dead ends: 1231 [2021-12-21 12:53:33,695 INFO L226 Difference]: Without dead ends: 710 [2021-12-21 12:53:33,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:53:33,702 INFO L933 BasicCegarLoop]: 832 mSDtfsCounter, 1289 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 1866 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1336 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 2271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 1866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:33,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1336 Valid, 1793 Invalid, 2271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 1866 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-21 12:53:33,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2021-12-21 12:53:33,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 512. [2021-12-21 12:53:33,786 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) [2021-12-21 12:53:33,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 846 transitions. [2021-12-21 12:53:33,792 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 846 transitions. Word has length 101 [2021-12-21 12:53:33,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:33,792 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 846 transitions. [2021-12-21 12:53:33,793 INFO L471 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) [2021-12-21 12:53:33,793 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 846 transitions. [2021-12-21 12:53:33,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-21 12:53:33,798 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:33,798 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:53:33,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 12:53:33,799 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:33,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:33,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1219828463, now seen corresponding path program 1 times [2021-12-21 12:53:33,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:33,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281220657] [2021-12-21 12:53:33,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:33,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:33,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:33,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:33,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:53:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:33,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 12:53:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:33,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:33,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 12:53:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:33,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 12:53:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:33,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:33,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:33,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 12:53:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:33,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 12:53:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:33,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:33,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 12:53:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:33,972 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 12:53:33,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:33,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281220657] [2021-12-21 12:53:33,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281220657] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:33,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:53:33,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 12:53:33,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326794371] [2021-12-21 12:53:33,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:33,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:53:33,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:33,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:53:33,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:53:33,977 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) [2021-12-21 12:53:36,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:36,326 INFO L93 Difference]: Finished difference Result 1205 states and 1999 transitions. [2021-12-21 12:53:36,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:53:36,327 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 [2021-12-21 12:53:36,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:36,330 INFO L225 Difference]: With dead ends: 1205 [2021-12-21 12:53:36,331 INFO L226 Difference]: Without dead ends: 710 [2021-12-21 12:53:36,333 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:53:36,333 INFO L933 BasicCegarLoop]: 801 mSDtfsCounter, 1287 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 1856 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 2261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 1856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:36,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1334 Valid, 1677 Invalid, 2261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 1856 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-21 12:53:36,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2021-12-21 12:53:36,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 512. [2021-12-21 12:53:36,368 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) [2021-12-21 12:53:36,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 845 transitions. [2021-12-21 12:53:36,371 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 845 transitions. Word has length 102 [2021-12-21 12:53:36,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:36,372 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 845 transitions. [2021-12-21 12:53:36,372 INFO L471 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) [2021-12-21 12:53:36,372 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 845 transitions. [2021-12-21 12:53:36,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-21 12:53:36,374 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:36,374 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:53:36,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 12:53:36,375 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:36,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:36,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1726293121, now seen corresponding path program 1 times [2021-12-21 12:53:36,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:36,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372021088] [2021-12-21 12:53:36,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:36,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:36,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:36,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:36,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:36,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:53:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:36,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:36,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 12:53:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:36,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 12:53:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:36,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:36,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:36,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 12:53:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:36,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 12:53:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:36,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:36,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 12:53:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 12:53:36,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:36,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372021088] [2021-12-21 12:53:36,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372021088] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:36,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:53:36,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 12:53:36,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682312156] [2021-12-21 12:53:36,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:36,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:53:36,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:36,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:53:36,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:53:36,510 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) [2021-12-21 12:53:38,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:38,964 INFO L93 Difference]: Finished difference Result 1205 states and 1998 transitions. [2021-12-21 12:53:38,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:53:38,964 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 [2021-12-21 12:53:38,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:38,968 INFO L225 Difference]: With dead ends: 1205 [2021-12-21 12:53:38,968 INFO L226 Difference]: Without dead ends: 710 [2021-12-21 12:53:38,970 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:53:38,971 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 1269 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 1856 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 1856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:38,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1316 Valid, 1725 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 1856 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-21 12:53:38,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2021-12-21 12:53:39,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 512. [2021-12-21 12:53:39,028 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) [2021-12-21 12:53:39,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 844 transitions. [2021-12-21 12:53:39,031 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 844 transitions. Word has length 103 [2021-12-21 12:53:39,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:39,032 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 844 transitions. [2021-12-21 12:53:39,032 INFO L471 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) [2021-12-21 12:53:39,033 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 844 transitions. [2021-12-21 12:53:39,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-21 12:53:39,037 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:39,037 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:53:39,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 12:53:39,038 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:39,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:39,039 INFO L85 PathProgramCache]: Analyzing trace with hash -787669171, now seen corresponding path program 1 times [2021-12-21 12:53:39,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:39,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043703553] [2021-12-21 12:53:39,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:39,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 12:53:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 12:53:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 12:53:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 12:53:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 12:53:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 12:53:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 12:53:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,204 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 12:53:39,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:39,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043703553] [2021-12-21 12:53:39,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043703553] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:39,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:53:39,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 12:53:39,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790716240] [2021-12-21 12:53:39,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:39,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:53:39,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:39,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:53:39,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:53:39,207 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) [2021-12-21 12:53:41,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:41,571 INFO L93 Difference]: Finished difference Result 1205 states and 1997 transitions. [2021-12-21 12:53:41,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:53:41,572 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 [2021-12-21 12:53:41,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:41,576 INFO L225 Difference]: With dead ends: 1205 [2021-12-21 12:53:41,576 INFO L226 Difference]: Without dead ends: 710 [2021-12-21 12:53:41,578 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:53:41,579 INFO L933 BasicCegarLoop]: 818 mSDtfsCounter, 1265 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 1863 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 2265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 1863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:41,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1312 Valid, 1729 Invalid, 2265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 1863 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-21 12:53:41,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2021-12-21 12:53:41,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 512. [2021-12-21 12:53:41,605 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) [2021-12-21 12:53:41,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 843 transitions. [2021-12-21 12:53:41,607 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 843 transitions. Word has length 104 [2021-12-21 12:53:41,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:41,608 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 843 transitions. [2021-12-21 12:53:41,608 INFO L471 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) [2021-12-21 12:53:41,608 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 843 transitions. [2021-12-21 12:53:41,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-21 12:53:41,610 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:41,610 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:53:41,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 12:53:41,610 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:41,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:41,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1999028667, now seen corresponding path program 1 times [2021-12-21 12:53:41,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:41,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587632673] [2021-12-21 12:53:41,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:41,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 12:53:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 12:53:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 12:53:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 12:53:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:41,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 12:53:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:53:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 12:53:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,741 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 12:53:41,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:41,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587632673] [2021-12-21 12:53:41,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587632673] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:41,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:53:41,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 12:53:41,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153158038] [2021-12-21 12:53:41,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:41,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:53:41,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:41,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:53:41,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:53:41,744 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) [2021-12-21 12:53:44,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:44,035 INFO L93 Difference]: Finished difference Result 1205 states and 1996 transitions. [2021-12-21 12:53:44,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:53:44,035 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 [2021-12-21 12:53:44,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:44,038 INFO L225 Difference]: With dead ends: 1205 [2021-12-21 12:53:44,038 INFO L226 Difference]: Without dead ends: 710 [2021-12-21 12:53:44,040 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:53:44,041 INFO L933 BasicCegarLoop]: 818 mSDtfsCounter, 1260 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 2255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 1851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:44,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1307 Valid, 1726 Invalid, 2255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 1851 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-21 12:53:44,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2021-12-21 12:53:44,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 512. [2021-12-21 12:53:44,085 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) [2021-12-21 12:53:44,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 842 transitions. [2021-12-21 12:53:44,087 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 842 transitions. Word has length 105 [2021-12-21 12:53:44,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:44,088 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 842 transitions. [2021-12-21 12:53:44,088 INFO L471 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) [2021-12-21 12:53:44,088 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 842 transitions. [2021-12-21 12:53:44,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-21 12:53:44,090 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:44,090 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:53:44,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 12:53:44,091 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:44,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:44,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1946474889, now seen corresponding path program 1 times [2021-12-21 12:53:44,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:44,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583678817] [2021-12-21 12:53:44,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:44,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:44,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:44,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:44,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:53:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:44,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 12:53:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:44,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:44,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-21 12:53:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:44,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 12:53:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:44,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:44,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:44,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 12:53:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:44,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 12:53:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:44,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:44,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 12:53:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:44,279 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 12:53:44,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:44,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583678817] [2021-12-21 12:53:44,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583678817] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:44,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:53:44,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 12:53:44,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345637752] [2021-12-21 12:53:44,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:44,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 12:53:44,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:44,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 12:53:44,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:53:44,281 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) [2021-12-21 12:53:47,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:47,365 INFO L93 Difference]: Finished difference Result 1227 states and 2032 transitions. [2021-12-21 12:53:47,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 12:53:47,366 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 [2021-12-21 12:53:47,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:47,368 INFO L225 Difference]: With dead ends: 1227 [2021-12-21 12:53:47,368 INFO L226 Difference]: Without dead ends: 736 [2021-12-21 12:53:47,370 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:53:47,371 INFO L933 BasicCegarLoop]: 832 mSDtfsCounter, 1380 mSDsluCounter, 2075 mSDsCounter, 0 mSdLazyCounter, 3926 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 2907 SdHoareTripleChecker+Invalid, 4339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 3926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:47,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1427 Valid, 2907 Invalid, 4339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 3926 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-21 12:53:47,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-12-21 12:53:47,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 525. [2021-12-21 12:53:47,401 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) [2021-12-21 12:53:47,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 862 transitions. [2021-12-21 12:53:47,404 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 862 transitions. Word has length 106 [2021-12-21 12:53:47,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:47,404 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 862 transitions. [2021-12-21 12:53:47,404 INFO L471 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) [2021-12-21 12:53:47,404 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 862 transitions. [2021-12-21 12:53:47,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-21 12:53:47,406 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:47,406 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:53:47,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 12:53:47,406 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:47,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:47,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1409960792, now seen corresponding path program 1 times [2021-12-21 12:53:47,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:47,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232306310] [2021-12-21 12:53:47,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:47,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:53:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 12:53:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-21 12:53:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 12:53:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 12:53:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 12:53:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 12:53:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,543 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 12:53:47,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:47,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232306310] [2021-12-21 12:53:47,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232306310] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:47,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:53:47,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 12:53:47,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245875346] [2021-12-21 12:53:47,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:47,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:53:47,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:47,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:53:47,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:53:47,545 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) [2021-12-21 12:53:49,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:49,908 INFO L93 Difference]: Finished difference Result 1270 states and 2105 transitions. [2021-12-21 12:53:49,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 12:53:49,908 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 [2021-12-21 12:53:49,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:49,911 INFO L225 Difference]: With dead ends: 1270 [2021-12-21 12:53:49,911 INFO L226 Difference]: Without dead ends: 770 [2021-12-21 12:53:49,913 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:53:49,914 INFO L933 BasicCegarLoop]: 779 mSDtfsCounter, 1326 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 1824 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 2297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 1824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:49,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1373 Valid, 1671 Invalid, 2297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 1824 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-21 12:53:49,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2021-12-21 12:53:49,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 545. [2021-12-21 12:53:49,946 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) [2021-12-21 12:53:49,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 890 transitions. [2021-12-21 12:53:49,948 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 890 transitions. Word has length 106 [2021-12-21 12:53:49,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:49,948 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 890 transitions. [2021-12-21 12:53:49,948 INFO L471 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) [2021-12-21 12:53:49,948 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 890 transitions. [2021-12-21 12:53:49,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-21 12:53:49,950 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:49,950 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:53:49,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 12:53:49,951 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:49,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:49,951 INFO L85 PathProgramCache]: Analyzing trace with hash 416871043, now seen corresponding path program 1 times [2021-12-21 12:53:49,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:49,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536915468] [2021-12-21 12:53:49,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:49,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:53:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-21 12:53:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 12:53:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 12:53:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 12:53:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 12:53:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 12:53:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,079 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 12:53:50,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:50,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536915468] [2021-12-21 12:53:50,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536915468] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:50,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:53:50,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 12:53:50,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039445655] [2021-12-21 12:53:50,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:50,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:53:50,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:50,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:53:50,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:53:50,081 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) [2021-12-21 12:53:52,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:52,232 INFO L93 Difference]: Finished difference Result 1245 states and 2040 transitions. [2021-12-21 12:53:52,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 12:53:52,233 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 [2021-12-21 12:53:52,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:52,235 INFO L225 Difference]: With dead ends: 1245 [2021-12-21 12:53:52,236 INFO L226 Difference]: Without dead ends: 761 [2021-12-21 12:53:52,237 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:53:52,239 INFO L933 BasicCegarLoop]: 768 mSDtfsCounter, 1289 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 1818 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1336 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 2286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 1818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:52,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1336 Valid, 1658 Invalid, 2286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 1818 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-21 12:53:52,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2021-12-21 12:53:52,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 545. [2021-12-21 12:53:52,276 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) [2021-12-21 12:53:52,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 885 transitions. [2021-12-21 12:53:52,278 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 885 transitions. Word has length 107 [2021-12-21 12:53:52,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:52,280 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 885 transitions. [2021-12-21 12:53:52,280 INFO L471 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) [2021-12-21 12:53:52,280 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 885 transitions. [2021-12-21 12:53:52,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-21 12:53:52,282 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:52,282 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:53:52,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 12:53:52,282 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:52,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:52,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1916227379, now seen corresponding path program 1 times [2021-12-21 12:53:52,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:52,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679345262] [2021-12-21 12:53:52,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:52,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:52,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:52,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:52,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:53:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:52,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 12:53:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:52,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:52,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 12:53:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:52,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 12:53:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:52,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:52,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:52,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 12:53:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:52,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 12:53:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:52,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:52,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 12:53:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:52,429 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 12:53:52,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:52,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679345262] [2021-12-21 12:53:52,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679345262] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:52,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:53:52,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 12:53:52,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195829630] [2021-12-21 12:53:52,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:52,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:53:52,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:52,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:53:52,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:53:52,431 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) [2021-12-21 12:53:54,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:54,614 INFO L93 Difference]: Finished difference Result 1245 states and 2035 transitions. [2021-12-21 12:53:54,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 12:53:54,615 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 [2021-12-21 12:53:54,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:54,617 INFO L225 Difference]: With dead ends: 1245 [2021-12-21 12:53:54,618 INFO L226 Difference]: Without dead ends: 761 [2021-12-21 12:53:54,619 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:53:54,620 INFO L933 BasicCegarLoop]: 776 mSDtfsCounter, 1281 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 1802 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1328 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 1802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:54,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1328 Valid, 1682 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 1802 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-21 12:53:54,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2021-12-21 12:53:54,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 545. [2021-12-21 12:53:54,653 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) [2021-12-21 12:53:54,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 880 transitions. [2021-12-21 12:53:54,655 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 880 transitions. Word has length 108 [2021-12-21 12:53:54,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:54,656 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 880 transitions. [2021-12-21 12:53:54,656 INFO L471 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) [2021-12-21 12:53:54,656 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 880 transitions. [2021-12-21 12:53:54,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-21 12:53:54,658 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:54,658 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:53:54,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 12:53:54,659 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:54,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:54,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1956894120, now seen corresponding path program 1 times [2021-12-21 12:53:54,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:54,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316607318] [2021-12-21 12:53:54,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:54,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:53:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 12:53:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 12:53:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 12:53:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 12:53:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 12:53:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 12:53:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,805 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 12:53:54,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:54,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316607318] [2021-12-21 12:53:54,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316607318] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:54,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:53:54,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 12:53:54,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747748797] [2021-12-21 12:53:54,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:54,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 12:53:54,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:54,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 12:53:54,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:53:54,807 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) [2021-12-21 12:53:57,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:57,942 INFO L93 Difference]: Finished difference Result 1249 states and 2031 transitions. [2021-12-21 12:53:57,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 12:53:57,943 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 [2021-12-21 12:53:57,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:57,945 INFO L225 Difference]: With dead ends: 1249 [2021-12-21 12:53:57,946 INFO L226 Difference]: Without dead ends: 780 [2021-12-21 12:53:57,947 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:53:57,948 INFO L933 BasicCegarLoop]: 779 mSDtfsCounter, 1330 mSDsluCounter, 1977 mSDsCounter, 0 mSdLazyCounter, 3934 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 2756 SdHoareTripleChecker+Invalid, 4348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 3934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:57,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1377 Valid, 2756 Invalid, 4348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 3934 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-21 12:53:57,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-12-21 12:53:57,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 547. [2021-12-21 12:53:57,983 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) [2021-12-21 12:53:57,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 881 transitions. [2021-12-21 12:53:57,984 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 881 transitions. Word has length 109 [2021-12-21 12:53:57,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:57,985 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 881 transitions. [2021-12-21 12:53:57,985 INFO L471 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) [2021-12-21 12:53:57,985 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 881 transitions. [2021-12-21 12:53:57,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-21 12:53:57,987 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:57,987 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:53:57,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 12:53:57,987 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:57,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:57,988 INFO L85 PathProgramCache]: Analyzing trace with hash -63177592, now seen corresponding path program 1 times [2021-12-21 12:53:57,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:57,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710540869] [2021-12-21 12:53:57,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:57,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:58,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:58,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:58,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:53:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:58,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 12:53:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:58,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:58,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 12:53:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:58,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 12:53:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:58,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:58,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:58,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 12:53:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:58,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 12:53:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:58,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:58,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 12:53:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:58,134 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 12:53:58,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:58,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710540869] [2021-12-21 12:53:58,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710540869] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:58,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:53:58,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 12:53:58,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247560463] [2021-12-21 12:53:58,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:58,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:53:58,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:58,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:53:58,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:53:58,136 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) [2021-12-21 12:54:00,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:00,281 INFO L93 Difference]: Finished difference Result 1249 states and 2030 transitions. [2021-12-21 12:54:00,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 12:54:00,281 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 [2021-12-21 12:54:00,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:00,284 INFO L225 Difference]: With dead ends: 1249 [2021-12-21 12:54:00,284 INFO L226 Difference]: Without dead ends: 763 [2021-12-21 12:54:00,285 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:54:00,286 INFO L933 BasicCegarLoop]: 773 mSDtfsCounter, 1284 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 1795 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 1795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:00,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1331 Valid, 1674 Invalid, 2241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 1795 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-21 12:54:00,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2021-12-21 12:54:00,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 547. [2021-12-21 12:54:00,321 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) [2021-12-21 12:54:00,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 876 transitions. [2021-12-21 12:54:00,323 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 876 transitions. Word has length 109 [2021-12-21 12:54:00,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:00,323 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 876 transitions. [2021-12-21 12:54:00,323 INFO L471 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) [2021-12-21 12:54:00,323 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 876 transitions. [2021-12-21 12:54:00,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-21 12:54:00,325 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:00,325 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:54:00,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 12:54:00,326 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:00,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:00,326 INFO L85 PathProgramCache]: Analyzing trace with hash 25192784, now seen corresponding path program 1 times [2021-12-21 12:54:00,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:00,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503629849] [2021-12-21 12:54:00,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:00,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:00,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:00,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:00,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:00,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 12:54:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:00,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:00,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 12:54:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:00,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 12:54:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:00,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:00,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:00,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 12:54:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:00,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 12:54:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:00,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:00,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 12:54:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:00,459 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 12:54:00,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:00,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503629849] [2021-12-21 12:54:00,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503629849] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:00,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:54:00,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 12:54:00,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654933751] [2021-12-21 12:54:00,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:00,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 12:54:00,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:00,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 12:54:00,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:54:00,462 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) [2021-12-21 12:54:03,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:03,453 INFO L93 Difference]: Finished difference Result 1274 states and 2058 transitions. [2021-12-21 12:54:03,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 12:54:03,454 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 [2021-12-21 12:54:03,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:03,457 INFO L225 Difference]: With dead ends: 1274 [2021-12-21 12:54:03,457 INFO L226 Difference]: Without dead ends: 800 [2021-12-21 12:54:03,458 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:54:03,459 INFO L933 BasicCegarLoop]: 789 mSDtfsCounter, 1324 mSDsluCounter, 2067 mSDsCounter, 0 mSdLazyCounter, 3830 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 2856 SdHoareTripleChecker+Invalid, 4250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 3830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:03,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1371 Valid, 2856 Invalid, 4250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 3830 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-21 12:54:03,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2021-12-21 12:54:03,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 553. [2021-12-21 12:54:03,495 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) [2021-12-21 12:54:03,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 881 transitions. [2021-12-21 12:54:03,497 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 881 transitions. Word has length 110 [2021-12-21 12:54:03,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:03,497 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 881 transitions. [2021-12-21 12:54:03,497 INFO L471 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) [2021-12-21 12:54:03,497 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 881 transitions. [2021-12-21 12:54:03,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-21 12:54:03,499 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:03,499 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:54:03,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 12:54:03,499 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:03,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:03,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1583519502, now seen corresponding path program 1 times [2021-12-21 12:54:03,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:03,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157270495] [2021-12-21 12:54:03,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:03,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:03,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:03,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:03,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:03,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 12:54:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:03,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:03,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 12:54:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:03,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 12:54:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:03,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:03,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:03,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 12:54:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:03,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 12:54:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:03,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:03,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 12:54:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:03,615 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 12:54:03,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:03,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157270495] [2021-12-21 12:54:03,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157270495] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:03,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:54:03,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 12:54:03,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943369019] [2021-12-21 12:54:03,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:03,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:54:03,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:03,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:54:03,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:54:03,617 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) [2021-12-21 12:54:05,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:05,722 INFO L93 Difference]: Finished difference Result 1264 states and 2036 transitions. [2021-12-21 12:54:05,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 12:54:05,723 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 [2021-12-21 12:54:05,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:05,725 INFO L225 Difference]: With dead ends: 1264 [2021-12-21 12:54:05,725 INFO L226 Difference]: Without dead ends: 772 [2021-12-21 12:54:05,727 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:54:05,729 INFO L933 BasicCegarLoop]: 778 mSDtfsCounter, 1279 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 1773 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1326 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 2211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 1773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:05,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1326 Valid, 1689 Invalid, 2211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 1773 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-21 12:54:05,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-12-21 12:54:05,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 553. [2021-12-21 12:54:05,771 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) [2021-12-21 12:54:05,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 876 transitions. [2021-12-21 12:54:05,773 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 876 transitions. Word has length 110 [2021-12-21 12:54:05,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:05,773 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 876 transitions. [2021-12-21 12:54:05,773 INFO L471 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) [2021-12-21 12:54:05,773 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 876 transitions. [2021-12-21 12:54:05,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-21 12:54:05,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:05,775 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:54:05,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 12:54:05,776 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:05,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:05,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1922365613, now seen corresponding path program 1 times [2021-12-21 12:54:05,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:05,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205941244] [2021-12-21 12:54:05,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:05,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:05,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:05,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:05,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:05,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 12:54:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:05,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:05,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 12:54:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:05,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 12:54:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:05,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:05,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:05,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 12:54:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:05,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 12:54:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:05,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:05,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 12:54:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:05,945 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 12:54:05,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:05,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205941244] [2021-12-21 12:54:05,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205941244] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:05,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:54:05,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 12:54:05,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660754279] [2021-12-21 12:54:05,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:05,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 12:54:05,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:05,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 12:54:05,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:54:05,946 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) [2021-12-21 12:54:08,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:08,961 INFO L93 Difference]: Finished difference Result 1286 states and 2059 transitions. [2021-12-21 12:54:08,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 12:54:08,961 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 [2021-12-21 12:54:08,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:08,964 INFO L225 Difference]: With dead ends: 1286 [2021-12-21 12:54:08,964 INFO L226 Difference]: Without dead ends: 809 [2021-12-21 12:54:08,966 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:54:08,966 INFO L933 BasicCegarLoop]: 774 mSDtfsCounter, 1320 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 3802 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1367 SdHoareTripleChecker+Valid, 2780 SdHoareTripleChecker+Invalid, 4223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 3802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:08,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1367 Valid, 2780 Invalid, 4223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 3802 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-21 12:54:08,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2021-12-21 12:54:09,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 561. [2021-12-21 12:54:09,004 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) [2021-12-21 12:54:09,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 883 transitions. [2021-12-21 12:54:09,006 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 883 transitions. Word has length 111 [2021-12-21 12:54:09,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:09,006 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 883 transitions. [2021-12-21 12:54:09,006 INFO L471 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) [2021-12-21 12:54:09,006 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 883 transitions. [2021-12-21 12:54:09,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-21 12:54:09,008 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:09,008 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:54:09,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 12:54:09,009 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:09,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:09,009 INFO L85 PathProgramCache]: Analyzing trace with hash -304821619, now seen corresponding path program 1 times [2021-12-21 12:54:09,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:09,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995606401] [2021-12-21 12:54:09,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:09,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:09,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:09,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:09,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:09,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 12:54:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:09,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:09,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 12:54:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:09,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 12:54:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:09,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:09,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:09,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 12:54:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:09,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 12:54:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:09,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:09,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 12:54:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:09,136 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 12:54:09,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:09,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995606401] [2021-12-21 12:54:09,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995606401] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:09,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:54:09,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 12:54:09,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966879346] [2021-12-21 12:54:09,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:09,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:54:09,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:09,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:54:09,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:54:09,138 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) [2021-12-21 12:54:11,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:11,346 INFO L93 Difference]: Finished difference Result 1320 states and 2093 transitions. [2021-12-21 12:54:11,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 12:54:11,346 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 [2021-12-21 12:54:11,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:11,349 INFO L225 Difference]: With dead ends: 1320 [2021-12-21 12:54:11,349 INFO L226 Difference]: Without dead ends: 756 [2021-12-21 12:54:11,350 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:54:11,351 INFO L933 BasicCegarLoop]: 804 mSDtfsCounter, 1234 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 2196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:11,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1281 Valid, 1728 Invalid, 2196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-21 12:54:11,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-12-21 12:54:11,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 542. [2021-12-21 12:54:11,429 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) [2021-12-21 12:54:11,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 856 transitions. [2021-12-21 12:54:11,431 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 856 transitions. Word has length 111 [2021-12-21 12:54:11,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:11,431 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 856 transitions. [2021-12-21 12:54:11,431 INFO L471 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) [2021-12-21 12:54:11,432 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 856 transitions. [2021-12-21 12:54:11,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-21 12:54:11,433 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:11,433 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:54:11,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 12:54:11,433 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:11,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:11,434 INFO L85 PathProgramCache]: Analyzing trace with hash -2039414027, now seen corresponding path program 1 times [2021-12-21 12:54:11,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:11,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490439316] [2021-12-21 12:54:11,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:11,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:11,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:11,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:11,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:11,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 12:54:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:11,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:11,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 12:54:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:11,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:54:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:11,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:11,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:11,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 12:54:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:11,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 12:54:11,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:11,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:11,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 12:54:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:11,592 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 12:54:11,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:11,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490439316] [2021-12-21 12:54:11,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490439316] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:11,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:54:11,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 12:54:11,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744537228] [2021-12-21 12:54:11,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:11,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 12:54:11,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:11,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 12:54:11,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:54:11,595 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) [2021-12-21 12:54:14,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:14,662 INFO L93 Difference]: Finished difference Result 1267 states and 2018 transitions. [2021-12-21 12:54:14,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 12:54:14,662 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 [2021-12-21 12:54:14,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:14,665 INFO L225 Difference]: With dead ends: 1267 [2021-12-21 12:54:14,665 INFO L226 Difference]: Without dead ends: 789 [2021-12-21 12:54:14,666 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:54:14,667 INFO L933 BasicCegarLoop]: 772 mSDtfsCounter, 1284 mSDsluCounter, 2036 mSDsCounter, 0 mSdLazyCounter, 3721 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 4137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 3721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:14,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1331 Valid, 2808 Invalid, 4137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 3721 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-21 12:54:14,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2021-12-21 12:54:14,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 552. [2021-12-21 12:54:14,705 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) [2021-12-21 12:54:14,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 866 transitions. [2021-12-21 12:54:14,707 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 866 transitions. Word has length 112 [2021-12-21 12:54:14,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:14,708 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 866 transitions. [2021-12-21 12:54:14,708 INFO L471 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) [2021-12-21 12:54:14,708 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 866 transitions. [2021-12-21 12:54:14,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-21 12:54:14,710 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:14,710 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:54:14,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 12:54:14,710 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:14,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:14,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1135066562, now seen corresponding path program 1 times [2021-12-21 12:54:14,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:14,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455555745] [2021-12-21 12:54:14,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:14,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:14,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:14,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:14,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:14,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:54:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:14,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:14,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 12:54:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:14,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 12:54:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:14,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:14,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:14,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:54:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:14,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 12:54:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:14,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:14,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 12:54:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:14,849 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-21 12:54:14,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:14,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455555745] [2021-12-21 12:54:14,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455555745] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:54:14,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269471366] [2021-12-21 12:54:14,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:14,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:14,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:54:14,851 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) [2021-12-21 12:54:14,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 12:54:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:15,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 12:54:15,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:54:15,265 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-21 12:54:15,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:54:15,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269471366] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:15,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:54:15,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2021-12-21 12:54:15,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376761340] [2021-12-21 12:54:15,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:15,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:54:15,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:15,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:54:15,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-21 12:54:15,267 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) [2021-12-21 12:54:15,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:15,595 INFO L93 Difference]: Finished difference Result 1036 states and 1674 transitions. [2021-12-21 12:54:15,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:54:15,596 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 [2021-12-21 12:54:15,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:15,598 INFO L225 Difference]: With dead ends: 1036 [2021-12-21 12:54:15,598 INFO L226 Difference]: Without dead ends: 560 [2021-12-21 12:54:15,600 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:54:15,600 INFO L933 BasicCegarLoop]: 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 [2021-12-21 12:54:15,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [776 Valid, 2007 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 12:54:15,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-12-21 12:54:15,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2021-12-21 12:54:15,640 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) [2021-12-21 12:54:15,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 879 transitions. [2021-12-21 12:54:15,642 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 879 transitions. Word has length 113 [2021-12-21 12:54:15,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:15,642 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 879 transitions. [2021-12-21 12:54:15,642 INFO L471 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) [2021-12-21 12:54:15,642 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 879 transitions. [2021-12-21 12:54:15,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-21 12:54:15,644 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:15,644 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:54:15,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 12:54:15,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-21 12:54:15,860 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:15,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:15,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2061669059, now seen corresponding path program 1 times [2021-12-21 12:54:15,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:15,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097887309] [2021-12-21 12:54:15,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:15,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:15,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:15,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:15,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:15,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:54:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:15,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:15,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 12:54:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:15,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 12:54:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:15,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:15,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:15,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 12:54:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:15,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 12:54:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:16,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:16,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 12:54:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:16,004 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-21 12:54:16,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:16,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097887309] [2021-12-21 12:54:16,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097887309] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:54:16,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031377447] [2021-12-21 12:54:16,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:16,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:16,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:54:16,005 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) [2021-12-21 12:54:16,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 12:54:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:16,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 1212 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 12:54:16,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:54:16,366 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-21 12:54:16,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:54:16,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031377447] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:16,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:54:16,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2021-12-21 12:54:16,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211908443] [2021-12-21 12:54:16,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:16,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:54:16,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:16,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:54:16,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-21 12:54:16,368 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) [2021-12-21 12:54:16,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:16,689 INFO L93 Difference]: Finished difference Result 1052 states and 1697 transitions. [2021-12-21 12:54:16,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:54:16,690 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 [2021-12-21 12:54:16,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:16,692 INFO L225 Difference]: With dead ends: 1052 [2021-12-21 12:54:16,692 INFO L226 Difference]: Without dead ends: 568 [2021-12-21 12:54:16,694 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:54:16,694 INFO L933 BasicCegarLoop]: 780 mSDtfsCounter, 771 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2021-12-21 12:54:16,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [789 Valid, 2007 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 12:54:16,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-12-21 12:54:16,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2021-12-21 12:54:16,735 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) [2021-12-21 12:54:16,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 892 transitions. [2021-12-21 12:54:16,737 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 892 transitions. Word has length 116 [2021-12-21 12:54:16,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:16,737 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 892 transitions. [2021-12-21 12:54:16,737 INFO L471 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) [2021-12-21 12:54:16,737 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 892 transitions. [2021-12-21 12:54:16,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-21 12:54:16,739 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:16,739 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:54:16,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 12:54:16,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-21 12:54:16,955 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:16,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:16,956 INFO L85 PathProgramCache]: Analyzing trace with hash -427684002, now seen corresponding path program 1 times [2021-12-21 12:54:16,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:16,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301462583] [2021-12-21 12:54:16,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:16,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:17,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:17,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:17,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:17,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:54:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:17,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:17,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 12:54:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:17,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 12:54:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:17,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:17,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:17,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 12:54:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:17,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 12:54:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:17,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:17,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 12:54:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:17,103 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-21 12:54:17,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:17,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301462583] [2021-12-21 12:54:17,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301462583] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:54:17,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945371878] [2021-12-21 12:54:17,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:17,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:17,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:54:17,106 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) [2021-12-21 12:54:17,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 12:54:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:17,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 12:54:17,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:54:17,459 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-21 12:54:17,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:54:17,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945371878] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:17,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:54:17,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2021-12-21 12:54:17,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803293946] [2021-12-21 12:54:17,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:17,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:54:17,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:17,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:54:17,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-21 12:54:17,461 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) [2021-12-21 12:54:17,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:17,809 INFO L93 Difference]: Finished difference Result 1068 states and 1720 transitions. [2021-12-21 12:54:17,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:54:17,810 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 [2021-12-21 12:54:17,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:17,812 INFO L225 Difference]: With dead ends: 1068 [2021-12-21 12:54:17,812 INFO L226 Difference]: Without dead ends: 576 [2021-12-21 12:54:17,814 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:54:17,814 INFO L933 BasicCegarLoop]: 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 [2021-12-21 12:54:17,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [777 Valid, 2007 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 12:54:17,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-12-21 12:54:17,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2021-12-21 12:54:17,855 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) [2021-12-21 12:54:17,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 905 transitions. [2021-12-21 12:54:17,857 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 905 transitions. Word has length 119 [2021-12-21 12:54:17,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:17,857 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 905 transitions. [2021-12-21 12:54:17,857 INFO L471 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) [2021-12-21 12:54:17,857 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 905 transitions. [2021-12-21 12:54:17,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-21 12:54:17,859 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:17,859 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:54:17,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 12:54:18,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:18,076 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:18,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:18,076 INFO L85 PathProgramCache]: Analyzing trace with hash -33723247, now seen corresponding path program 1 times [2021-12-21 12:54:18,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:18,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784642664] [2021-12-21 12:54:18,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:18,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:18,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:18,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:18,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:18,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:54:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:18,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:18,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 12:54:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:18,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 12:54:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:18,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:18,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:18,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 12:54:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:18,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 12:54:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:18,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:18,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:18,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 12:54:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:18,223 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-21 12:54:18,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:18,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784642664] [2021-12-21 12:54:18,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784642664] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:54:18,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107726562] [2021-12-21 12:54:18,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:18,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:18,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:54:18,227 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) [2021-12-21 12:54:18,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 12:54:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:18,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 1218 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 12:54:18,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:54:18,616 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-21 12:54:18,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:54:18,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107726562] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:18,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:54:18,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2021-12-21 12:54:18,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134453198] [2021-12-21 12:54:18,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:18,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:54:18,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:18,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:54:18,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-21 12:54:18,621 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) [2021-12-21 12:54:18,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:18,952 INFO L93 Difference]: Finished difference Result 1084 states and 1743 transitions. [2021-12-21 12:54:18,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:54:18,953 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 [2021-12-21 12:54:18,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:18,955 INFO L225 Difference]: With dead ends: 1084 [2021-12-21 12:54:18,955 INFO L226 Difference]: Without dead ends: 584 [2021-12-21 12:54:18,957 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:54:18,957 INFO L933 BasicCegarLoop]: 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, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:18,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [776 Valid, 2007 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 12:54:18,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-12-21 12:54:18,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2021-12-21 12:54:18,998 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) [2021-12-21 12:54:19,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 918 transitions. [2021-12-21 12:54:19,000 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 918 transitions. Word has length 122 [2021-12-21 12:54:19,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:19,000 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 918 transitions. [2021-12-21 12:54:19,000 INFO L471 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) [2021-12-21 12:54:19,001 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 918 transitions. [2021-12-21 12:54:19,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-21 12:54:19,002 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:19,002 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:54:19,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 12:54:19,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:19,205 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:19,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:19,205 INFO L85 PathProgramCache]: Analyzing trace with hash -517842182, now seen corresponding path program 1 times [2021-12-21 12:54:19,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:19,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282772175] [2021-12-21 12:54:19,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:19,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:19,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:19,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:19,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:19,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:54:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:19,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:19,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 12:54:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:19,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 12:54:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:19,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:19,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:19,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 12:54:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:19,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 12:54:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:19,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:19,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 12:54:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:19,444 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-21 12:54:19,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:19,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282772175] [2021-12-21 12:54:19,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282772175] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:54:19,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111841166] [2021-12-21 12:54:19,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:19,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:19,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:54:19,446 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) [2021-12-21 12:54:19,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 12:54:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:19,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 12:54:19,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:54:19,795 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-21 12:54:19,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:54:19,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111841166] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:19,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:54:19,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 13 [2021-12-21 12:54:19,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50248753] [2021-12-21 12:54:19,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:19,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 12:54:19,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:19,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 12:54:19,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-21 12:54:19,796 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) [2021-12-21 12:54:19,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:19,861 INFO L93 Difference]: Finished difference Result 1269 states and 2003 transitions. [2021-12-21 12:54:19,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 12:54:19,862 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 [2021-12-21 12:54:19,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:19,864 INFO L225 Difference]: With dead ends: 1269 [2021-12-21 12:54:19,864 INFO L226 Difference]: Without dead ends: 761 [2021-12-21 12:54:19,866 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:54:19,867 INFO L933 BasicCegarLoop]: 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 [2021-12-21 12:54:19,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [536 Valid, 1308 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:54:19,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2021-12-21 12:54:19,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 759. [2021-12-21 12:54:19,922 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) [2021-12-21 12:54:19,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1172 transitions. [2021-12-21 12:54:19,924 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1172 transitions. Word has length 125 [2021-12-21 12:54:19,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:19,925 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 1172 transitions. [2021-12-21 12:54:19,925 INFO L471 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) [2021-12-21 12:54:19,925 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1172 transitions. [2021-12-21 12:54:19,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-21 12:54:19,926 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:19,927 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:54:19,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 12:54:20,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:20,136 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:20,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:20,136 INFO L85 PathProgramCache]: Analyzing trace with hash -719666116, now seen corresponding path program 1 times [2021-12-21 12:54:20,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:20,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90098616] [2021-12-21 12:54:20,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:20,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:20,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:20,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:20,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:20,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:54:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:20,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:20,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 12:54:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:20,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 12:54:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:20,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:20,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:20,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 12:54:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:20,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 12:54:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:20,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:20,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 12:54:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:20,345 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-21 12:54:20,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:20,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90098616] [2021-12-21 12:54:20,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90098616] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:54:20,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693980761] [2021-12-21 12:54:20,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:20,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:20,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:54:20,347 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) [2021-12-21 12:54:20,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 12:54:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:20,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-21 12:54:20,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:54:20,774 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-21 12:54:20,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:54:20,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693980761] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:20,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:54:20,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2021-12-21 12:54:20,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105402426] [2021-12-21 12:54:20,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:20,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:54:20,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:20,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:54:20,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-12-21 12:54:20,776 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) [2021-12-21 12:54:21,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:21,325 INFO L93 Difference]: Finished difference Result 2123 states and 3362 transitions. [2021-12-21 12:54:21,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:54:21,326 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 [2021-12-21 12:54:21,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:21,331 INFO L225 Difference]: With dead ends: 2123 [2021-12-21 12:54:21,331 INFO L226 Difference]: Without dead ends: 1441 [2021-12-21 12:54:21,333 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:54:21,334 INFO L933 BasicCegarLoop]: 939 mSDtfsCounter, 931 mSDsluCounter, 2750 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 3689 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:21,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [934 Valid, 3689 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 12:54:21,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2021-12-21 12:54:21,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1432. [2021-12-21 12:54:21,430 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) [2021-12-21 12:54:21,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 2249 transitions. [2021-12-21 12:54:21,435 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 2249 transitions. Word has length 125 [2021-12-21 12:54:21,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:21,436 INFO L470 AbstractCegarLoop]: Abstraction has 1432 states and 2249 transitions. [2021-12-21 12:54:21,436 INFO L471 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) [2021-12-21 12:54:21,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 2249 transitions. [2021-12-21 12:54:21,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-21 12:54:21,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:21,438 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:54:21,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-21 12:54:21,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:21,642 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:21,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:21,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1839604388, now seen corresponding path program 1 times [2021-12-21 12:54:21,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:21,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131709830] [2021-12-21 12:54:21,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:21,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:21,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:21,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:21,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:21,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:54:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:21,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:21,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 12:54:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:21,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 12:54:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:21,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:21,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:21,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:54:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:21,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 12:54:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:21,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 12:54:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:21,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:21,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 12:54:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:21,850 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 12:54:21,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:21,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131709830] [2021-12-21 12:54:21,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131709830] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:54:21,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622529444] [2021-12-21 12:54:21,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:21,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:21,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:54:21,852 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) [2021-12-21 12:54:21,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 12:54:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:22,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-21 12:54:22,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:54:22,245 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-21 12:54:22,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:54:22,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622529444] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:22,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:54:22,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-21 12:54:22,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774126315] [2021-12-21 12:54:22,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:22,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:54:22,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:22,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:54:22,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:54:22,247 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) [2021-12-21 12:54:22,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:22,627 INFO L93 Difference]: Finished difference Result 2805 states and 4467 transitions. [2021-12-21 12:54:22,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:54:22,627 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 [2021-12-21 12:54:22,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:22,645 INFO L225 Difference]: With dead ends: 2805 [2021-12-21 12:54:22,645 INFO L226 Difference]: Without dead ends: 1450 [2021-12-21 12:54:22,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-12-21 12:54:22,649 INFO L933 BasicCegarLoop]: 959 mSDtfsCounter, 743 mSDsluCounter, 2470 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 3429 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 [2021-12-21 12:54:22,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [743 Valid, 3429 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 12:54:22,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2021-12-21 12:54:22,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1442. [2021-12-21 12:54:22,744 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) [2021-12-21 12:54:22,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 2267 transitions. [2021-12-21 12:54:22,749 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 2267 transitions. Word has length 127 [2021-12-21 12:54:22,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:22,749 INFO L470 AbstractCegarLoop]: Abstraction has 1442 states and 2267 transitions. [2021-12-21 12:54:22,750 INFO L471 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) [2021-12-21 12:54:22,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 2267 transitions. [2021-12-21 12:54:22,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-21 12:54:22,751 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:22,751 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:54:22,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-21 12:54:22,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:22,969 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:22,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:22,970 INFO L85 PathProgramCache]: Analyzing trace with hash 85788211, now seen corresponding path program 1 times [2021-12-21 12:54:22,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:22,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913058634] [2021-12-21 12:54:22,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:22,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:23,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:23,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:23,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:23,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:54:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:23,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:23,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 12:54:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:23,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 12:54:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:23,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:23,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:23,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:54:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:23,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 12:54:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:23,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:54:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:23,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 12:54:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:23,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:23,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 12:54:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:23,187 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 12:54:23,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:23,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913058634] [2021-12-21 12:54:23,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913058634] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:54:23,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647524605] [2021-12-21 12:54:23,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:23,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:23,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:54:23,189 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) [2021-12-21 12:54:23,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-21 12:54:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:23,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 1237 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 12:54:23,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:54:23,502 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-21 12:54:23,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:54:23,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647524605] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:23,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:54:23,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2021-12-21 12:54:23,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327982324] [2021-12-21 12:54:23,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:23,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 12:54:23,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:23,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 12:54:23,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-21 12:54:23,504 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) [2021-12-21 12:54:23,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:23,670 INFO L93 Difference]: Finished difference Result 3479 states and 5558 transitions. [2021-12-21 12:54:23,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 12:54:23,671 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 [2021-12-21 12:54:23,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:23,677 INFO L225 Difference]: With dead ends: 3479 [2021-12-21 12:54:23,677 INFO L226 Difference]: Without dead ends: 2116 [2021-12-21 12:54:23,682 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:54:23,682 INFO L933 BasicCegarLoop]: 1547 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, 2357 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 [2021-12-21 12:54:23,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 2357 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:54:23,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2021-12-21 12:54:23,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 1442. [2021-12-21 12:54:23,786 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) [2021-12-21 12:54:23,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 2266 transitions. [2021-12-21 12:54:23,791 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 2266 transitions. Word has length 132 [2021-12-21 12:54:23,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:23,791 INFO L470 AbstractCegarLoop]: Abstraction has 1442 states and 2266 transitions. [2021-12-21 12:54:23,792 INFO L471 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) [2021-12-21 12:54:23,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 2266 transitions. [2021-12-21 12:54:23,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-21 12:54:23,793 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:23,793 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:54:23,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-21 12:54:24,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-21 12:54:24,007 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:24,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:24,008 INFO L85 PathProgramCache]: Analyzing trace with hash 787388085, now seen corresponding path program 1 times [2021-12-21 12:54:24,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:24,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883893298] [2021-12-21 12:54:24,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:24,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:54:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 12:54:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 12:54:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:54:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 12:54:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:54:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 12:54:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 12:54:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,220 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 12:54:24,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:24,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883893298] [2021-12-21 12:54:24,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883893298] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:54:24,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383684145] [2021-12-21 12:54:24,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:24,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:24,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:54:24,222 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) [2021-12-21 12:54:24,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-21 12:54:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 12:54:24,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:54:24,596 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-21 12:54:24,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:54:24,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383684145] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:24,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:54:24,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-21 12:54:24,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349794154] [2021-12-21 12:54:24,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:24,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:54:24,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:24,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:54:24,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:54:24,598 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) [2021-12-21 12:54:24,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:24,743 INFO L93 Difference]: Finished difference Result 2815 states and 4488 transitions. [2021-12-21 12:54:24,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:54:24,744 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 [2021-12-21 12:54:24,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:24,749 INFO L225 Difference]: With dead ends: 2815 [2021-12-21 12:54:24,749 INFO L226 Difference]: Without dead ends: 1454 [2021-12-21 12:54:24,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-12-21 12:54:24,753 INFO L933 BasicCegarLoop]: 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 [2021-12-21 12:54:24,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 3370 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:54:24,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2021-12-21 12:54:24,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1442. [2021-12-21 12:54:24,888 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) [2021-12-21 12:54:24,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 2262 transitions. [2021-12-21 12:54:24,893 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 2262 transitions. Word has length 132 [2021-12-21 12:54:24,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:24,894 INFO L470 AbstractCegarLoop]: Abstraction has 1442 states and 2262 transitions. [2021-12-21 12:54:24,894 INFO L471 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) [2021-12-21 12:54:24,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 2262 transitions. [2021-12-21 12:54:24,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-21 12:54:24,896 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:24,896 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:54:24,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-21 12:54:25,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-21 12:54:25,097 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:25,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:25,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1914532507, now seen corresponding path program 1 times [2021-12-21 12:54:25,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:25,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953534477] [2021-12-21 12:54:25,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:25,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:25,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:25,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:25,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:25,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:54:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:25,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:25,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 12:54:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:25,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 12:54:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:25,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 12:54:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:25,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 12:54:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:25,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 12:54:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:25,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 12:54:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:25,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 12:54:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:25,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 12:54:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:25,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 12:54:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:25,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:25,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-21 12:54:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:25,312 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-12-21 12:54:25,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:25,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953534477] [2021-12-21 12:54:25,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953534477] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:54:25,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351805262] [2021-12-21 12:54:25,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:25,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:25,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:54:25,313 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) [2021-12-21 12:54:25,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-21 12:54:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:25,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 1328 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 12:54:25,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:54:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-21 12:54:25,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:54:25,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351805262] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:25,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:54:25,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2021-12-21 12:54:25,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696812685] [2021-12-21 12:54:25,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:25,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:54:25,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:25,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:54:25,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-21 12:54:25,653 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) [2021-12-21 12:54:25,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:25,864 INFO L93 Difference]: Finished difference Result 2884 states and 4592 transitions. [2021-12-21 12:54:25,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:54:25,865 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 [2021-12-21 12:54:25,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:25,870 INFO L225 Difference]: With dead ends: 2884 [2021-12-21 12:54:25,870 INFO L226 Difference]: Without dead ends: 1520 [2021-12-21 12:54:25,874 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:54:25,875 INFO L933 BasicCegarLoop]: 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 [2021-12-21 12:54:25,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 2208 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:54:25,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-12-21 12:54:25,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1520. [2021-12-21 12:54:25,986 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) [2021-12-21 12:54:25,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 2408 transitions. [2021-12-21 12:54:25,991 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 2408 transitions. Word has length 155 [2021-12-21 12:54:25,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:25,991 INFO L470 AbstractCegarLoop]: Abstraction has 1520 states and 2408 transitions. [2021-12-21 12:54:25,992 INFO L471 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) [2021-12-21 12:54:25,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 2408 transitions. [2021-12-21 12:54:26,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-21 12:54:26,002 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:26,002 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:54:26,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-21 12:54:26,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-21 12:54:26,207 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:26,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:26,208 INFO L85 PathProgramCache]: Analyzing trace with hash 961042028, now seen corresponding path program 1 times [2021-12-21 12:54:26,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:26,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274023122] [2021-12-21 12:54:26,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:26,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:54:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 12:54:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 12:54:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 12:54:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 12:54:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 12:54:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 12:54:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 12:54:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-21 12:54:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 12:54:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-21 12:54:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,417 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-21 12:54:26,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:26,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274023122] [2021-12-21 12:54:26,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274023122] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:54:26,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931049465] [2021-12-21 12:54:26,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:26,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:26,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:54:26,418 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) [2021-12-21 12:54:26,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-21 12:54:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 12:54:26,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:54:26,794 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-21 12:54:26,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:54:26,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931049465] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:26,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:54:26,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2021-12-21 12:54:26,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095082857] [2021-12-21 12:54:26,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:26,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:54:26,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:26,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:54:26,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-21 12:54:26,795 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) [2021-12-21 12:54:26,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:26,990 INFO L93 Difference]: Finished difference Result 3040 states and 4882 transitions. [2021-12-21 12:54:26,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:54:26,990 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 [2021-12-21 12:54:26,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:26,996 INFO L225 Difference]: With dead ends: 3040 [2021-12-21 12:54:26,996 INFO L226 Difference]: Without dead ends: 1598 [2021-12-21 12:54:27,015 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:54:27,016 INFO L933 BasicCegarLoop]: 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 [2021-12-21 12:54:27,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 2208 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:54:27,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2021-12-21 12:54:27,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1598. [2021-12-21 12:54:27,118 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) [2021-12-21 12:54:27,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2554 transitions. [2021-12-21 12:54:27,123 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2554 transitions. Word has length 160 [2021-12-21 12:54:27,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:27,123 INFO L470 AbstractCegarLoop]: Abstraction has 1598 states and 2554 transitions. [2021-12-21 12:54:27,123 INFO L471 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) [2021-12-21 12:54:27,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2554 transitions. [2021-12-21 12:54:27,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-21 12:54:27,126 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:27,126 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:54:27,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-21 12:54:27,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-21 12:54:27,339 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:27,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:27,340 INFO L85 PathProgramCache]: Analyzing trace with hash -272186404, now seen corresponding path program 1 times [2021-12-21 12:54:27,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:27,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530175719] [2021-12-21 12:54:27,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:27,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:27,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:27,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:27,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:27,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:54:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:27,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:27,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 12:54:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:27,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 12:54:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:27,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 12:54:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:27,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 12:54:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:27,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 12:54:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:27,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 12:54:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:27,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:54:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:27,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 12:54:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:27,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-21 12:54:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:27,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:27,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-21 12:54:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-21 12:54:27,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:27,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530175719] [2021-12-21 12:54:27,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530175719] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:54:27,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286886367] [2021-12-21 12:54:27,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:27,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:27,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:54:27,536 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) [2021-12-21 12:54:27,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-21 12:54:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:27,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 1337 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 12:54:27,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:54:27,881 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-21 12:54:27,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:54:27,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286886367] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:27,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:54:27,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2021-12-21 12:54:27,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724619436] [2021-12-21 12:54:27,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:27,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:54:27,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:27,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:54:27,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-21 12:54:27,883 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) [2021-12-21 12:54:28,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:28,127 INFO L93 Difference]: Finished difference Result 3196 states and 5172 transitions. [2021-12-21 12:54:28,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:54:28,127 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 [2021-12-21 12:54:28,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:28,133 INFO L225 Difference]: With dead ends: 3196 [2021-12-21 12:54:28,133 INFO L226 Difference]: Without dead ends: 1676 [2021-12-21 12:54:28,137 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:54:28,138 INFO L933 BasicCegarLoop]: 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 [2021-12-21 12:54:28,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 2208 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:54:28,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2021-12-21 12:54:28,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1676. [2021-12-21 12:54:28,245 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) [2021-12-21 12:54:28,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2700 transitions. [2021-12-21 12:54:28,251 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2700 transitions. Word has length 164 [2021-12-21 12:54:28,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:28,251 INFO L470 AbstractCegarLoop]: Abstraction has 1676 states and 2700 transitions. [2021-12-21 12:54:28,251 INFO L471 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) [2021-12-21 12:54:28,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2700 transitions. [2021-12-21 12:54:28,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-21 12:54:28,254 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:28,254 INFO L514 BasicCegarLoop]: 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] [2021-12-21 12:54:28,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-21 12:54:28,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-21 12:54:28,471 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:28,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:28,472 INFO L85 PathProgramCache]: Analyzing trace with hash -224721989, now seen corresponding path program 1 times [2021-12-21 12:54:28,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:28,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183706529] [2021-12-21 12:54:28,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:28,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:54:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 12:54:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 12:54:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 12:54:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 12:54:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 12:54:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 12:54:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-21 12:54:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 12:54:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 12:54:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-21 12:54:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,674 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-21 12:54:28,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:28,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183706529] [2021-12-21 12:54:28,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183706529] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:54:28,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396227648] [2021-12-21 12:54:28,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:28,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:28,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:54:28,676 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) [2021-12-21 12:54:28,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process