./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec14_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec14_product31.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 866b4070887ce539f36e137c6ed6e587ee3f43d9563c34ef0dd3382aa4e2313a --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 16:56:05,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 16:56:05,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 16:56:05,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 16:56:05,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 16:56:05,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 16:56:05,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 16:56:05,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 16:56:05,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 16:56:05,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 16:56:05,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 16:56:05,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 16:56:05,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 16:56:05,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 16:56:05,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 16:56:05,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 16:56:05,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 16:56:05,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 16:56:05,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 16:56:05,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 16:56:05,625 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 16:56:05,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 16:56:05,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 16:56:05,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 16:56:05,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 16:56:05,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 16:56:05,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 16:56:05,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 16:56:05,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 16:56:05,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 16:56:05,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 16:56:05,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 16:56:05,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 16:56:05,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 16:56:05,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 16:56:05,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 16:56:05,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 16:56:05,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 16:56:05,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 16:56:05,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 16:56:05,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 16:56:05,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 16:56:05,644 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 16:56:05,679 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 16:56:05,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 16:56:05,680 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 16:56:05,680 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 16:56:05,681 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 16:56:05,681 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 16:56:05,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 16:56:05,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 16:56:05,682 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 16:56:05,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 16:56:05,683 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 16:56:05,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 16:56:05,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 16:56:05,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 16:56:05,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 16:56:05,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 16:56:05,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 16:56:05,684 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 16:56:05,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 16:56:05,685 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 16:56:05,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 16:56:05,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 16:56:05,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 16:56:05,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 16:56:05,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 16:56:05,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 16:56:05,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 16:56:05,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 16:56:05,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 16:56:05,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 16:56:05,689 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 16:56:05,689 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 16:56:05,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 16:56:05,689 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 866b4070887ce539f36e137c6ed6e587ee3f43d9563c34ef0dd3382aa4e2313a [2022-07-22 16:56:05,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 16:56:05,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 16:56:05,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 16:56:05,922 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 16:56:05,923 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 16:56:05,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec14_product31.cil.c [2022-07-22 16:56:05,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2b79f46a/a00b762aa6214ff6872298201792636e/FLAG22a0361d0 [2022-07-22 16:56:06,488 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 16:56:06,490 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec14_product31.cil.c [2022-07-22 16:56:06,517 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2b79f46a/a00b762aa6214ff6872298201792636e/FLAG22a0361d0 [2022-07-22 16:56:06,995 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2b79f46a/a00b762aa6214ff6872298201792636e [2022-07-22 16:56:06,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 16:56:06,998 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 16:56:06,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 16:56:06,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 16:56:07,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 16:56:07,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:56:06" (1/1) ... [2022-07-22 16:56:07,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fbea6d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:56:07, skipping insertion in model container [2022-07-22 16:56:07,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:56:06" (1/1) ... [2022-07-22 16:56:07,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 16:56:07,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 16:56:07,432 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_product31.cil.c[71150,71163] [2022-07-22 16:56:07,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 16:56:07,446 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 16:56:07,583 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_product31.cil.c[71150,71163] [2022-07-22 16:56:07,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 16:56:07,606 INFO L208 MainTranslator]: Completed translation [2022-07-22 16:56:07,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:56:07 WrapperNode [2022-07-22 16:56:07,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 16:56:07,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 16:56:07,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 16:56:07,608 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 16:56:07,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:56:07" (1/1) ... [2022-07-22 16:56:07,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:56:07" (1/1) ... [2022-07-22 16:56:07,674 INFO L137 Inliner]: procedures = 94, calls = 342, calls flagged for inlining = 29, calls inlined = 26, statements flattened = 898 [2022-07-22 16:56:07,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 16:56:07,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 16:56:07,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 16:56:07,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 16:56:07,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:56:07" (1/1) ... [2022-07-22 16:56:07,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:56:07" (1/1) ... [2022-07-22 16:56:07,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:56:07" (1/1) ... [2022-07-22 16:56:07,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:56:07" (1/1) ... [2022-07-22 16:56:07,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:56:07" (1/1) ... [2022-07-22 16:56:07,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:56:07" (1/1) ... [2022-07-22 16:56:07,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:56:07" (1/1) ... [2022-07-22 16:56:07,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 16:56:07,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 16:56:07,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 16:56:07,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 16:56:07,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:56:07" (1/1) ... [2022-07-22 16:56:07,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 16:56:07,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:56:07,832 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 16:56:07,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 16:56:07,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 16:56:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-07-22 16:56:07,875 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-07-22 16:56:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-22 16:56:07,875 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-22 16:56:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-22 16:56:07,876 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-22 16:56:07,876 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-22 16:56:07,876 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-22 16:56:07,876 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-07-22 16:56:07,877 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-07-22 16:56:07,877 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-22 16:56:07,877 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-22 16:56:07,877 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-07-22 16:56:07,877 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-07-22 16:56:07,877 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-22 16:56:07,877 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-22 16:56:07,878 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-07-22 16:56:07,878 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-07-22 16:56:07,878 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-22 16:56:07,878 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-22 16:56:07,878 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-22 16:56:07,878 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-22 16:56:07,878 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-22 16:56:07,879 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-22 16:56:07,879 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-22 16:56:07,879 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-22 16:56:07,879 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-22 16:56:07,879 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-22 16:56:07,879 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-22 16:56:07,880 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-22 16:56:07,880 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-22 16:56:07,880 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-22 16:56:07,880 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-22 16:56:07,880 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-22 16:56:07,881 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-22 16:56:07,881 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-22 16:56:07,881 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-22 16:56:07,881 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-22 16:56:07,881 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-22 16:56:07,881 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-22 16:56:07,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 16:56:07,882 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-22 16:56:07,882 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-22 16:56:07,882 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-22 16:56:07,882 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-22 16:56:07,882 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-22 16:56:07,882 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-22 16:56:07,883 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-22 16:56:07,883 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-22 16:56:07,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 16:56:07,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 16:56:07,884 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-22 16:56:07,884 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-22 16:56:08,068 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 16:56:08,070 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 16:56:08,894 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 16:56:08,929 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 16:56:08,931 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 16:56:08,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:56:08 BoogieIcfgContainer [2022-07-22 16:56:08,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 16:56:08,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 16:56:08,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 16:56:08,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 16:56:08,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 04:56:06" (1/3) ... [2022-07-22 16:56:08,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fbe0a41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:56:08, skipping insertion in model container [2022-07-22 16:56:08,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:56:07" (2/3) ... [2022-07-22 16:56:08,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fbe0a41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:56:08, skipping insertion in model container [2022-07-22 16:56:08,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:56:08" (3/3) ... [2022-07-22 16:56:08,941 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product31.cil.c [2022-07-22 16:56:08,953 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 16:56:08,953 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 16:56:09,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 16:56:09,015 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5a7d83e3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1a78f067 [2022-07-22 16:56:09,015 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 16:56:09,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 568 states, 442 states have (on average 1.667420814479638) internal successors, (737), 458 states have internal predecessors, (737), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 97 states have call predecessors, (99), 99 states have call successors, (99) [2022-07-22 16:56:09,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-22 16:56:09,050 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:09,051 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:09,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:09,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:09,056 INFO L85 PathProgramCache]: Analyzing trace with hash -575617612, now seen corresponding path program 1 times [2022-07-22 16:56:09,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:09,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977190902] [2022-07-22 16:56:09,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:09,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 16:56:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:56:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 16:56:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:56:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 16:56:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 16:56:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 16:56:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:09,598 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:56:09,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:09,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977190902] [2022-07-22 16:56:09,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977190902] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:09,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:09,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:56:09,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914463016] [2022-07-22 16:56:09,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:09,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:56:09,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:09,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:56:09,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:56:09,645 INFO L87 Difference]: Start difference. First operand has 568 states, 442 states have (on average 1.667420814479638) internal successors, (737), 458 states have internal predecessors, (737), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 97 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:13,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:13,235 INFO L93 Difference]: Finished difference Result 1333 states and 2226 transitions. [2022-07-22 16:56:13,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 16:56:13,238 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 103 [2022-07-22 16:56:13,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:13,254 INFO L225 Difference]: With dead ends: 1333 [2022-07-22 16:56:13,254 INFO L226 Difference]: Without dead ends: 761 [2022-07-22 16:56:13,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:56:13,264 INFO L413 NwaCegarLoop]: 895 mSDtfsCounter, 1417 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 2088 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 2525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 2088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:13,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1779 Invalid, 2525 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [437 Valid, 2088 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 16:56:13,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-07-22 16:56:13,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 563. [2022-07-22 16:56:13,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 438 states have (on average 1.6575342465753424) internal successors, (726), 453 states have internal predecessors, (726), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-22 16:56:13,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 923 transitions. [2022-07-22 16:56:13,412 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 923 transitions. Word has length 103 [2022-07-22 16:56:13,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:13,413 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 923 transitions. [2022-07-22 16:56:13,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:13,414 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 923 transitions. [2022-07-22 16:56:13,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 16:56:13,420 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:13,420 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:13,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 16:56:13,421 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:13,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:13,421 INFO L85 PathProgramCache]: Analyzing trace with hash 807558964, now seen corresponding path program 1 times [2022-07-22 16:56:13,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:13,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582662974] [2022-07-22 16:56:13,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:13,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:13,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:13,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:13,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:56:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:13,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 16:56:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:13,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:13,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:56:13,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:13,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 16:56:13,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:13,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:13,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:13,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:56:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:13,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 16:56:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:13,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 16:56:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:13,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:13,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 16:56:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:13,638 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:56:13,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:13,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582662974] [2022-07-22 16:56:13,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582662974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:13,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:13,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:56:13,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039523776] [2022-07-22 16:56:13,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:13,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:56:13,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:13,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:56:13,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:56:13,644 INFO L87 Difference]: Start difference. First operand 563 states and 923 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:16,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:16,928 INFO L93 Difference]: Finished difference Result 1307 states and 2153 transitions. [2022-07-22 16:56:16,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:56:16,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2022-07-22 16:56:16,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:16,935 INFO L225 Difference]: With dead ends: 1307 [2022-07-22 16:56:16,935 INFO L226 Difference]: Without dead ends: 761 [2022-07-22 16:56:16,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:56:16,939 INFO L413 NwaCegarLoop]: 885 mSDtfsCounter, 1397 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 2088 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 2522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:16,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1444 Valid, 1726 Invalid, 2522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 2088 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 16:56:16,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-07-22 16:56:16,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 563. [2022-07-22 16:56:16,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 438 states have (on average 1.6552511415525115) internal successors, (725), 453 states have internal predecessors, (725), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-22 16:56:16,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 922 transitions. [2022-07-22 16:56:16,998 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 922 transitions. Word has length 104 [2022-07-22 16:56:16,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:16,998 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 922 transitions. [2022-07-22 16:56:16,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:16,999 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 922 transitions. [2022-07-22 16:56:17,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 16:56:17,002 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:17,002 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:17,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 16:56:17,003 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:17,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:17,003 INFO L85 PathProgramCache]: Analyzing trace with hash 679359280, now seen corresponding path program 1 times [2022-07-22 16:56:17,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:17,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053614519] [2022-07-22 16:56:17,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:17,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:56:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 16:56:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 16:56:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 16:56:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:56:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 16:56:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 16:56:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 16:56:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:17,196 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:56:17,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:17,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053614519] [2022-07-22 16:56:17,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053614519] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:17,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:17,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:56:17,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348019393] [2022-07-22 16:56:17,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:17,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:56:17,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:17,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:56:17,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:56:17,200 INFO L87 Difference]: Start difference. First operand 563 states and 922 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:19,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:19,924 INFO L93 Difference]: Finished difference Result 1307 states and 2152 transitions. [2022-07-22 16:56:19,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:56:19,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2022-07-22 16:56:19,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:19,929 INFO L225 Difference]: With dead ends: 1307 [2022-07-22 16:56:19,930 INFO L226 Difference]: Without dead ends: 761 [2022-07-22 16:56:19,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:56:19,934 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 1406 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 2075 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 2075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:19,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1453 Valid, 1675 Invalid, 2512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 2075 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 16:56:19,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-07-22 16:56:19,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 563. [2022-07-22 16:56:19,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 438 states have (on average 1.6529680365296804) internal successors, (724), 453 states have internal predecessors, (724), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-22 16:56:19,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 921 transitions. [2022-07-22 16:56:19,985 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 921 transitions. Word has length 105 [2022-07-22 16:56:19,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:19,986 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 921 transitions. [2022-07-22 16:56:19,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:19,986 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 921 transitions. [2022-07-22 16:56:19,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 16:56:19,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:19,989 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:19,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 16:56:19,990 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:19,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:19,990 INFO L85 PathProgramCache]: Analyzing trace with hash 943135792, now seen corresponding path program 1 times [2022-07-22 16:56:19,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:19,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177816372] [2022-07-22 16:56:19,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:19,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 16:56:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 16:56:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 16:56:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 16:56:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:56:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 16:56:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 16:56:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 16:56:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:20,172 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:56:20,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:20,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177816372] [2022-07-22 16:56:20,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177816372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:20,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:20,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:56:20,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940170885] [2022-07-22 16:56:20,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:20,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:56:20,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:20,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:56:20,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:56:20,175 INFO L87 Difference]: Start difference. First operand 563 states and 921 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:22,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:22,938 INFO L93 Difference]: Finished difference Result 1307 states and 2151 transitions. [2022-07-22 16:56:22,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:56:22,938 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2022-07-22 16:56:22,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:22,943 INFO L225 Difference]: With dead ends: 1307 [2022-07-22 16:56:22,943 INFO L226 Difference]: Without dead ends: 761 [2022-07-22 16:56:22,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:56:22,947 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 1387 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 2077 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 2513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 2077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:22,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1434 Valid, 1736 Invalid, 2513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 2077 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 16:56:22,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-07-22 16:56:22,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 563. [2022-07-22 16:56:22,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 438 states have (on average 1.6506849315068493) internal successors, (723), 453 states have internal predecessors, (723), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-22 16:56:22,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 920 transitions. [2022-07-22 16:56:23,000 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 920 transitions. Word has length 106 [2022-07-22 16:56:23,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:23,000 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 920 transitions. [2022-07-22 16:56:23,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:23,001 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 920 transitions. [2022-07-22 16:56:23,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-22 16:56:23,004 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:23,004 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:23,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 16:56:23,004 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:23,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:23,005 INFO L85 PathProgramCache]: Analyzing trace with hash 473272492, now seen corresponding path program 1 times [2022-07-22 16:56:23,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:23,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367986917] [2022-07-22 16:56:23,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:23,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:56:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 16:56:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 16:56:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 16:56:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:56:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 16:56:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 16:56:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 16:56:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:23,172 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:56:23,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:23,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367986917] [2022-07-22 16:56:23,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367986917] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:23,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:23,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:56:23,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148639066] [2022-07-22 16:56:23,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:23,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:56:23,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:23,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:56:23,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:56:23,174 INFO L87 Difference]: Start difference. First operand 563 states and 920 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:25,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:25,884 INFO L93 Difference]: Finished difference Result 1307 states and 2150 transitions. [2022-07-22 16:56:25,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:56:25,884 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2022-07-22 16:56:25,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:25,889 INFO L225 Difference]: With dead ends: 1307 [2022-07-22 16:56:25,889 INFO L226 Difference]: Without dead ends: 761 [2022-07-22 16:56:25,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:56:25,893 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 1366 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 2074 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 2510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 2074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:25,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 1788 Invalid, 2510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 2074 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 16:56:25,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-07-22 16:56:25,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 563. [2022-07-22 16:56:25,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 438 states have (on average 1.6484018264840183) internal successors, (722), 453 states have internal predecessors, (722), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-22 16:56:25,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 919 transitions. [2022-07-22 16:56:25,943 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 919 transitions. Word has length 107 [2022-07-22 16:56:25,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:25,944 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 919 transitions. [2022-07-22 16:56:25,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:25,944 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 919 transitions. [2022-07-22 16:56:25,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-22 16:56:25,947 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:25,947 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:25,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 16:56:25,947 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:25,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:25,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1264588500, now seen corresponding path program 1 times [2022-07-22 16:56:25,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:25,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548907619] [2022-07-22 16:56:25,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:25,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 16:56:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 16:56:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:56:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:56:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 16:56:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 16:56:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 16:56:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:26,206 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:56:26,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:26,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548907619] [2022-07-22 16:56:26,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548907619] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:26,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:26,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 16:56:26,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583048716] [2022-07-22 16:56:26,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:26,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 16:56:26,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:26,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 16:56:26,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:56:26,209 INFO L87 Difference]: Start difference. First operand 563 states and 919 transitions. Second operand has 11 states, 10 states have (on average 6.3) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 16:56:30,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:30,456 INFO L93 Difference]: Finished difference Result 1329 states and 2186 transitions. [2022-07-22 16:56:30,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 16:56:30,457 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.3) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2022-07-22 16:56:30,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:30,461 INFO L225 Difference]: With dead ends: 1329 [2022-07-22 16:56:30,461 INFO L226 Difference]: Without dead ends: 787 [2022-07-22 16:56:30,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-07-22 16:56:30,470 INFO L413 NwaCegarLoop]: 899 mSDtfsCounter, 1510 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 6129 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 3463 SdHoareTripleChecker+Invalid, 6591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 6129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:30,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1557 Valid, 3463 Invalid, 6591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 6129 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-22 16:56:30,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-07-22 16:56:30,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 576. [2022-07-22 16:56:30,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 448 states have (on average 1.6450892857142858) internal successors, (737), 465 states have internal predecessors, (737), 100 states have call successors, (100), 26 states have call predecessors, (100), 27 states have return successors, (102), 97 states have call predecessors, (102), 99 states have call successors, (102) [2022-07-22 16:56:30,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 939 transitions. [2022-07-22 16:56:30,531 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 939 transitions. Word has length 108 [2022-07-22 16:56:30,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:30,532 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 939 transitions. [2022-07-22 16:56:30,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.3) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 16:56:30,532 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 939 transitions. [2022-07-22 16:56:30,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-22 16:56:30,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:30,535 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:30,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 16:56:30,536 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:30,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:30,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1278838645, now seen corresponding path program 1 times [2022-07-22 16:56:30,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:30,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755287961] [2022-07-22 16:56:30,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:30,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:30,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:30,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:30,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:30,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 16:56:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:30,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:30,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 16:56:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:30,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:56:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:30,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:30,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:30,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:56:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:30,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 16:56:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:30,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 16:56:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:30,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:30,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 16:56:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:30,697 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:56:30,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:30,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755287961] [2022-07-22 16:56:30,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755287961] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:30,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:30,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:56:30,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204322632] [2022-07-22 16:56:30,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:30,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:56:30,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:30,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:56:30,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:56:30,700 INFO L87 Difference]: Start difference. First operand 576 states and 939 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:33,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:33,606 INFO L93 Difference]: Finished difference Result 1372 states and 2259 transitions. [2022-07-22 16:56:33,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 16:56:33,607 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2022-07-22 16:56:33,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:33,610 INFO L225 Difference]: With dead ends: 1372 [2022-07-22 16:56:33,610 INFO L226 Difference]: Without dead ends: 821 [2022-07-22 16:56:33,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:56:33,613 INFO L413 NwaCegarLoop]: 859 mSDtfsCounter, 1439 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 2039 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 2545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 2039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:33,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1711 Invalid, 2545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 2039 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 16:56:33,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2022-07-22 16:56:33,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 596. [2022-07-22 16:56:33,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 467 states have (on average 1.640256959314775) internal successors, (766), 484 states have internal predecessors, (766), 100 states have call successors, (100), 27 states have call predecessors, (100), 28 states have return successors, (101), 97 states have call predecessors, (101), 99 states have call successors, (101) [2022-07-22 16:56:33,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 967 transitions. [2022-07-22 16:56:33,668 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 967 transitions. Word has length 108 [2022-07-22 16:56:33,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:33,669 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 967 transitions. [2022-07-22 16:56:33,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:33,669 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 967 transitions. [2022-07-22 16:56:33,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 16:56:33,672 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:33,672 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:33,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 16:56:33,673 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:33,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:33,673 INFO L85 PathProgramCache]: Analyzing trace with hash 207718408, now seen corresponding path program 1 times [2022-07-22 16:56:33,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:33,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039769478] [2022-07-22 16:56:33,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:33,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:33,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:33,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:33,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:33,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 16:56:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:33,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:33,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 16:56:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:33,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 16:56:33,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:33,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:33,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:33,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:56:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:33,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 16:56:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:33,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 16:56:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:33,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:33,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 16:56:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:33,833 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:56:33,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:33,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039769478] [2022-07-22 16:56:33,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039769478] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:33,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:33,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:56:33,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505732365] [2022-07-22 16:56:33,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:33,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:56:33,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:33,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:56:33,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:56:33,835 INFO L87 Difference]: Start difference. First operand 596 states and 967 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:36,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:36,742 INFO L93 Difference]: Finished difference Result 1347 states and 2194 transitions. [2022-07-22 16:56:36,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 16:56:36,743 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2022-07-22 16:56:36,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:36,746 INFO L225 Difference]: With dead ends: 1347 [2022-07-22 16:56:36,746 INFO L226 Difference]: Without dead ends: 812 [2022-07-22 16:56:36,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:56:36,749 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 1417 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 2036 mSolverCounterSat, 501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 2537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 2036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:36,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1655 Invalid, 2537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 2036 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 16:56:36,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-07-22 16:56:36,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 596. [2022-07-22 16:56:36,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 467 states have (on average 1.6295503211991436) internal successors, (761), 484 states have internal predecessors, (761), 100 states have call successors, (100), 27 states have call predecessors, (100), 28 states have return successors, (101), 97 states have call predecessors, (101), 99 states have call successors, (101) [2022-07-22 16:56:36,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 962 transitions. [2022-07-22 16:56:36,806 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 962 transitions. Word has length 109 [2022-07-22 16:56:36,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:36,807 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 962 transitions. [2022-07-22 16:56:36,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:36,807 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 962 transitions. [2022-07-22 16:56:36,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-22 16:56:36,811 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:36,811 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:36,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 16:56:36,812 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:36,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:36,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1590070192, now seen corresponding path program 1 times [2022-07-22 16:56:36,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:36,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200836408] [2022-07-22 16:56:36,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:36,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:36,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:36,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:36,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:36,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 16:56:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:36,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:36,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 16:56:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:36,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:56:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:36,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:36,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:36,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:56:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:36,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:56:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:36,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 16:56:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:36,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:36,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 16:56:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:36,997 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:56:36,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:36,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200836408] [2022-07-22 16:56:36,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200836408] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:36,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:36,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:56:36,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466464560] [2022-07-22 16:56:36,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:36,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:56:36,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:36,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:56:36,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:56:37,000 INFO L87 Difference]: Start difference. First operand 596 states and 962 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:39,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:39,469 INFO L93 Difference]: Finished difference Result 1347 states and 2189 transitions. [2022-07-22 16:56:39,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 16:56:39,470 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2022-07-22 16:56:39,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:39,473 INFO L225 Difference]: With dead ends: 1347 [2022-07-22 16:56:39,473 INFO L226 Difference]: Without dead ends: 812 [2022-07-22 16:56:39,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:56:39,475 INFO L413 NwaCegarLoop]: 862 mSDtfsCounter, 1392 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 2025 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 2515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 2025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:39,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1439 Valid, 1743 Invalid, 2515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 2025 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 16:56:39,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-07-22 16:56:39,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 596. [2022-07-22 16:56:39,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 467 states have (on average 1.6188436830835118) internal successors, (756), 484 states have internal predecessors, (756), 100 states have call successors, (100), 27 states have call predecessors, (100), 28 states have return successors, (101), 97 states have call predecessors, (101), 99 states have call successors, (101) [2022-07-22 16:56:39,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 957 transitions. [2022-07-22 16:56:39,535 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 957 transitions. Word has length 110 [2022-07-22 16:56:39,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:39,536 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 957 transitions. [2022-07-22 16:56:39,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:39,536 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 957 transitions. [2022-07-22 16:56:39,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 16:56:39,539 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:39,539 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:39,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 16:56:39,540 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:39,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:39,540 INFO L85 PathProgramCache]: Analyzing trace with hash -294243923, now seen corresponding path program 1 times [2022-07-22 16:56:39,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:39,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520424383] [2022-07-22 16:56:39,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:39,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:56:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 16:56:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 16:56:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:56:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 16:56:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 16:56:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 16:56:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:39,715 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:56:39,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:39,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520424383] [2022-07-22 16:56:39,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520424383] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:39,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:39,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 16:56:39,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657799964] [2022-07-22 16:56:39,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:39,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 16:56:39,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:39,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 16:56:39,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:56:39,717 INFO L87 Difference]: Start difference. First operand 596 states and 957 transitions. Second operand has 9 states, 8 states have (on average 8.25) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 16:56:43,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:43,252 INFO L93 Difference]: Finished difference Result 1351 states and 2185 transitions. [2022-07-22 16:56:43,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 16:56:43,252 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (13), 4 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 111 [2022-07-22 16:56:43,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:43,256 INFO L225 Difference]: With dead ends: 1351 [2022-07-22 16:56:43,256 INFO L226 Difference]: Without dead ends: 831 [2022-07-22 16:56:43,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-07-22 16:56:43,259 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 1423 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 4491 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 2857 SdHoareTripleChecker+Invalid, 4937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 4491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:43,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 2857 Invalid, 4937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 4491 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 16:56:43,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2022-07-22 16:56:43,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 598. [2022-07-22 16:56:43,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 469 states have (on average 1.6140724946695095) internal successors, (757), 486 states have internal predecessors, (757), 100 states have call successors, (100), 27 states have call predecessors, (100), 28 states have return successors, (101), 97 states have call predecessors, (101), 99 states have call successors, (101) [2022-07-22 16:56:43,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 958 transitions. [2022-07-22 16:56:43,319 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 958 transitions. Word has length 111 [2022-07-22 16:56:43,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:43,319 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 958 transitions. [2022-07-22 16:56:43,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 16:56:43,319 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 958 transitions. [2022-07-22 16:56:43,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 16:56:43,322 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:43,323 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:43,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 16:56:43,323 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:43,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:43,323 INFO L85 PathProgramCache]: Analyzing trace with hash -257941363, now seen corresponding path program 1 times [2022-07-22 16:56:43,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:43,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408502970] [2022-07-22 16:56:43,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:43,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:56:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 16:56:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 16:56:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:56:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 16:56:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 16:56:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 16:56:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:43,460 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:56:43,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:43,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408502970] [2022-07-22 16:56:43,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408502970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:43,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:43,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:56:43,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923015583] [2022-07-22 16:56:43,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:43,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:56:43,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:43,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:56:43,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:56:43,463 INFO L87 Difference]: Start difference. First operand 598 states and 958 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:45,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:45,927 INFO L93 Difference]: Finished difference Result 1351 states and 2184 transitions. [2022-07-22 16:56:45,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 16:56:45,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2022-07-22 16:56:45,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:45,931 INFO L225 Difference]: With dead ends: 1351 [2022-07-22 16:56:45,931 INFO L226 Difference]: Without dead ends: 814 [2022-07-22 16:56:45,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:56:45,933 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 1400 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 2007 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 2487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 2007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:45,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 1702 Invalid, 2487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 2007 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 16:56:45,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-22 16:56:45,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 598. [2022-07-22 16:56:45,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 469 states have (on average 1.603411513859275) internal successors, (752), 486 states have internal predecessors, (752), 100 states have call successors, (100), 27 states have call predecessors, (100), 28 states have return successors, (101), 97 states have call predecessors, (101), 99 states have call successors, (101) [2022-07-22 16:56:45,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 953 transitions. [2022-07-22 16:56:45,990 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 953 transitions. Word has length 111 [2022-07-22 16:56:45,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:45,990 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 953 transitions. [2022-07-22 16:56:45,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:45,990 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 953 transitions. [2022-07-22 16:56:45,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 16:56:45,994 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:45,994 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:45,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 16:56:45,994 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:45,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:45,995 INFO L85 PathProgramCache]: Analyzing trace with hash 616278963, now seen corresponding path program 1 times [2022-07-22 16:56:45,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:45,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356675084] [2022-07-22 16:56:45,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:45,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:56:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 16:56:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 16:56:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:56:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 16:56:46,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 16:56:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 16:56:46,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:46,165 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:56:46,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:46,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356675084] [2022-07-22 16:56:46,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356675084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:46,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:46,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 16:56:46,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419379642] [2022-07-22 16:56:46,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:46,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 16:56:46,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:46,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 16:56:46,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:56:46,168 INFO L87 Difference]: Start difference. First operand 598 states and 953 transitions. Second operand has 9 states, 8 states have (on average 8.375) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 16:56:49,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:49,707 INFO L93 Difference]: Finished difference Result 1376 states and 2212 transitions. [2022-07-22 16:56:49,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 16:56:49,708 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (13), 4 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 112 [2022-07-22 16:56:49,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:49,712 INFO L225 Difference]: With dead ends: 1376 [2022-07-22 16:56:49,712 INFO L226 Difference]: Without dead ends: 851 [2022-07-22 16:56:49,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-07-22 16:56:49,714 INFO L413 NwaCegarLoop]: 859 mSDtfsCounter, 1446 mSDsluCounter, 1900 mSDsCounter, 0 mSdLazyCounter, 4389 mSolverCounterSat, 452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 4841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 4389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:49,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 2759 Invalid, 4841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [452 Valid, 4389 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 16:56:49,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-07-22 16:56:49,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 604. [2022-07-22 16:56:49,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 475 states have (on average 1.5936842105263158) internal successors, (757), 492 states have internal predecessors, (757), 100 states have call successors, (100), 27 states have call predecessors, (100), 28 states have return successors, (101), 97 states have call predecessors, (101), 99 states have call successors, (101) [2022-07-22 16:56:49,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 958 transitions. [2022-07-22 16:56:49,775 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 958 transitions. Word has length 112 [2022-07-22 16:56:49,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:49,775 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 958 transitions. [2022-07-22 16:56:49,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 16:56:49,776 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 958 transitions. [2022-07-22 16:56:49,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 16:56:49,779 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:49,779 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:49,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 16:56:49,779 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:49,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:49,780 INFO L85 PathProgramCache]: Analyzing trace with hash 831998677, now seen corresponding path program 1 times [2022-07-22 16:56:49,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:49,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341895516] [2022-07-22 16:56:49,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:49,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:49,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:49,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:49,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:49,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 16:56:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:49,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:49,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 16:56:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:49,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 16:56:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:49,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:49,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:49,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:56:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:49,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 16:56:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:49,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 16:56:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:49,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:49,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 16:56:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:49,909 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:56:49,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:49,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341895516] [2022-07-22 16:56:49,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341895516] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:49,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:49,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:56:49,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114719573] [2022-07-22 16:56:49,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:49,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:56:49,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:49,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:56:49,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:56:49,911 INFO L87 Difference]: Start difference. First operand 604 states and 958 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:52,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:52,366 INFO L93 Difference]: Finished difference Result 1366 states and 2190 transitions. [2022-07-22 16:56:52,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 16:56:52,366 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-07-22 16:56:52,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:52,370 INFO L225 Difference]: With dead ends: 1366 [2022-07-22 16:56:52,370 INFO L226 Difference]: Without dead ends: 823 [2022-07-22 16:56:52,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:56:52,373 INFO L413 NwaCegarLoop]: 848 mSDtfsCounter, 1400 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 2460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:52,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 1698 Invalid, 2460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 16:56:52,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2022-07-22 16:56:52,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 604. [2022-07-22 16:56:52,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 475 states have (on average 1.583157894736842) internal successors, (752), 492 states have internal predecessors, (752), 100 states have call successors, (100), 27 states have call predecessors, (100), 28 states have return successors, (101), 97 states have call predecessors, (101), 99 states have call successors, (101) [2022-07-22 16:56:52,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 953 transitions. [2022-07-22 16:56:52,435 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 953 transitions. Word has length 112 [2022-07-22 16:56:52,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:52,435 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 953 transitions. [2022-07-22 16:56:52,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:52,436 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 953 transitions. [2022-07-22 16:56:52,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 16:56:52,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:52,439 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:52,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 16:56:52,439 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:52,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:52,439 INFO L85 PathProgramCache]: Analyzing trace with hash -57625806, now seen corresponding path program 1 times [2022-07-22 16:56:52,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:52,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889351565] [2022-07-22 16:56:52,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:52,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:52,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:52,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:52,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:52,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:56:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:52,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:52,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 16:56:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:52,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 16:56:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:52,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:52,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:52,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:56:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:52,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 16:56:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:52,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 16:56:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:52,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:52,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 16:56:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:56:52,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:52,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889351565] [2022-07-22 16:56:52,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889351565] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:52,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:52,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 16:56:52,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847022809] [2022-07-22 16:56:52,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:52,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 16:56:52,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:52,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 16:56:52,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:56:52,601 INFO L87 Difference]: Start difference. First operand 604 states and 953 transitions. Second operand has 9 states, 8 states have (on average 8.5) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 16:56:56,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:56,111 INFO L93 Difference]: Finished difference Result 1388 states and 2213 transitions. [2022-07-22 16:56:56,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 16:56:56,112 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 113 [2022-07-22 16:56:56,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:56,115 INFO L225 Difference]: With dead ends: 1388 [2022-07-22 16:56:56,116 INFO L226 Difference]: Without dead ends: 860 [2022-07-22 16:56:56,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-07-22 16:56:56,118 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 1437 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 4358 mSolverCounterSat, 452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 4810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 4358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:56,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 2732 Invalid, 4810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [452 Valid, 4358 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 16:56:56,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-07-22 16:56:56,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 612. [2022-07-22 16:56:56,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 483 states have (on average 1.5714285714285714) internal successors, (759), 500 states have internal predecessors, (759), 100 states have call successors, (100), 27 states have call predecessors, (100), 28 states have return successors, (101), 97 states have call predecessors, (101), 99 states have call successors, (101) [2022-07-22 16:56:56,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 960 transitions. [2022-07-22 16:56:56,183 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 960 transitions. Word has length 113 [2022-07-22 16:56:56,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:56,183 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 960 transitions. [2022-07-22 16:56:56,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 16:56:56,184 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 960 transitions. [2022-07-22 16:56:56,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 16:56:56,187 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:56,187 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:56,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 16:56:56,187 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:56,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:56,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1490842350, now seen corresponding path program 1 times [2022-07-22 16:56:56,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:56,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695630806] [2022-07-22 16:56:56,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:56,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:56,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:56,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:56,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:56,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:56:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:56,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:56,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 16:56:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:56,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 16:56:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:56,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:56,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:56,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:56:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:56,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 16:56:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:56,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 16:56:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:56,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:56,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 16:56:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:56,340 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:56:56,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:56,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695630806] [2022-07-22 16:56:56,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695630806] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:56,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:56,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:56:56,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335089765] [2022-07-22 16:56:56,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:56,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:56:56,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:56,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:56:56,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:56:56,342 INFO L87 Difference]: Start difference. First operand 612 states and 960 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:58,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:56:58,908 INFO L93 Difference]: Finished difference Result 1422 states and 2247 transitions. [2022-07-22 16:56:58,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 16:56:58,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-07-22 16:56:58,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:56:58,911 INFO L225 Difference]: With dead ends: 1422 [2022-07-22 16:56:58,911 INFO L226 Difference]: Without dead ends: 807 [2022-07-22 16:56:58,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:56:58,913 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 1368 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 2007 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 2445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 2007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 16:56:58,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 1690 Invalid, 2445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 2007 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 16:56:58,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2022-07-22 16:56:58,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 593. [2022-07-22 16:56:58,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 467 states have (on average 1.576017130620985) internal successors, (736), 482 states have internal predecessors, (736), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-22 16:56:58,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 933 transitions. [2022-07-22 16:56:58,977 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 933 transitions. Word has length 113 [2022-07-22 16:56:58,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:56:58,977 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 933 transitions. [2022-07-22 16:56:58,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:56:58,978 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 933 transitions. [2022-07-22 16:56:58,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 16:56:58,980 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:56:58,980 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:56:58,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 16:56:58,981 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:56:58,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:56:58,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1690819672, now seen corresponding path program 1 times [2022-07-22 16:56:58,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:56:58,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746339556] [2022-07-22 16:56:58,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:56:58,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:56:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:59,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:56:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:59,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:59,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:56:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:59,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 16:56:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:59,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:59,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 16:56:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:59,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 16:56:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:59,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:59,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:59,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:56:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:59,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 16:56:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:59,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 16:56:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:59,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:56:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:59,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 16:56:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:56:59,144 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:56:59,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:56:59,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746339556] [2022-07-22 16:56:59,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746339556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:56:59,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:56:59,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 16:56:59,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729666959] [2022-07-22 16:56:59,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:56:59,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 16:56:59,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:56:59,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 16:56:59,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:56:59,148 INFO L87 Difference]: Start difference. First operand 593 states and 933 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, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 16:57:02,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:02,687 INFO L93 Difference]: Finished difference Result 1369 states and 2172 transitions. [2022-07-22 16:57:02,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 16:57:02,688 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, (13), 4 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 114 [2022-07-22 16:57:02,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:02,691 INFO L225 Difference]: With dead ends: 1369 [2022-07-22 16:57:02,691 INFO L226 Difference]: Without dead ends: 840 [2022-07-22 16:57:02,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-07-22 16:57:02,693 INFO L413 NwaCegarLoop]: 845 mSDtfsCounter, 1406 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 4276 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 4723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 4276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:02,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1453 Valid, 2741 Invalid, 4723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 4276 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-22 16:57:02,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2022-07-22 16:57:02,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 603. [2022-07-22 16:57:02,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 477 states have (on average 1.5639412997903563) internal successors, (746), 492 states have internal predecessors, (746), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-22 16:57:02,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 943 transitions. [2022-07-22 16:57:02,758 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 943 transitions. Word has length 114 [2022-07-22 16:57:02,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:02,758 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 943 transitions. [2022-07-22 16:57:02,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 16:57:02,759 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 943 transitions. [2022-07-22 16:57:02,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-22 16:57:02,761 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:02,761 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:02,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 16:57:02,761 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:02,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:02,762 INFO L85 PathProgramCache]: Analyzing trace with hash -975493115, now seen corresponding path program 1 times [2022-07-22 16:57:02,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:02,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641239829] [2022-07-22 16:57:02,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:02,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:02,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:02,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:02,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:02,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:02,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:02,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 16:57:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:02,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 16:57:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:02,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:02,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:02,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:57:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:02,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 16:57:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:02,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 16:57:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:02,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:02,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 16:57:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:02,907 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:57:02,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:02,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641239829] [2022-07-22 16:57:02,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641239829] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:02,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:57:02,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:57:02,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294810547] [2022-07-22 16:57:02,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:02,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:57:02,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:02,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:57:02,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:57:02,910 INFO L87 Difference]: Start difference. First operand 603 states and 943 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:57:05,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:05,471 INFO L93 Difference]: Finished difference Result 1365 states and 2160 transitions. [2022-07-22 16:57:05,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 16:57:05,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2022-07-22 16:57:05,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:05,479 INFO L225 Difference]: With dead ends: 1365 [2022-07-22 16:57:05,479 INFO L226 Difference]: Without dead ends: 810 [2022-07-22 16:57:05,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:57:05,482 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 1422 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 1943 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 2405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 1943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:05,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1469 Valid, 1717 Invalid, 2405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 1943 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 16:57:05,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2022-07-22 16:57:05,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 603. [2022-07-22 16:57:05,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 477 states have (on average 1.5555555555555556) internal successors, (742), 492 states have internal predecessors, (742), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-22 16:57:05,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 939 transitions. [2022-07-22 16:57:05,549 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 939 transitions. Word has length 115 [2022-07-22 16:57:05,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:05,549 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 939 transitions. [2022-07-22 16:57:05,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 16:57:05,550 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 939 transitions. [2022-07-22 16:57:05,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-22 16:57:05,552 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:05,552 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:05,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 16:57:05,553 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:05,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:05,553 INFO L85 PathProgramCache]: Analyzing trace with hash 983081671, now seen corresponding path program 1 times [2022-07-22 16:57:05,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:05,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753791931] [2022-07-22 16:57:05,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:05,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:05,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:05,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:05,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:05,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:05,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:05,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 16:57:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:05,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 16:57:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:05,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:05,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:05,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:57:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:05,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 16:57:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:05,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 16:57:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:05,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:05,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 16:57:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:05,728 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 16:57:05,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:05,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753791931] [2022-07-22 16:57:05,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753791931] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:05,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991422925] [2022-07-22 16:57:05,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:05,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:05,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:05,735 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:57:05,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 16:57:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:05,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 16:57:05,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:06,089 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 16:57:06,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:06,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991422925] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:06,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:06,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-07-22 16:57:06,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577228116] [2022-07-22 16:57:06,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:06,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:57:06,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:06,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:57:06,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:57:06,092 INFO L87 Difference]: Start difference. First operand 603 states and 939 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:57:06,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:06,522 INFO L93 Difference]: Finished difference Result 1138 states and 1827 transitions. [2022-07-22 16:57:06,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:57:06,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 115 [2022-07-22 16:57:06,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:06,526 INFO L225 Difference]: With dead ends: 1138 [2022-07-22 16:57:06,526 INFO L226 Difference]: Without dead ends: 611 [2022-07-22 16:57:06,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:57:06,529 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 843 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 2194 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:06,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 2194 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 16:57:06,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-07-22 16:57:06,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2022-07-22 16:57:06,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 484 states have (on average 1.5578512396694215) internal successors, (754), 499 states have internal predecessors, (754), 99 states have call successors, (99), 28 states have call predecessors, (99), 27 states have return successors, (99), 96 states have call predecessors, (99), 98 states have call successors, (99) [2022-07-22 16:57:06,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 952 transitions. [2022-07-22 16:57:06,608 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 952 transitions. Word has length 115 [2022-07-22 16:57:06,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:06,608 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 952 transitions. [2022-07-22 16:57:06,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:57:06,608 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 952 transitions. [2022-07-22 16:57:06,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-22 16:57:06,611 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:06,611 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:06,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 16:57:06,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-22 16:57:06,836 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:06,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:06,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1361102837, now seen corresponding path program 1 times [2022-07-22 16:57:06,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:06,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974986248] [2022-07-22 16:57:06,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:06,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:06,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:06,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:06,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:06,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:06,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:07,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 16:57:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:07,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 16:57:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:07,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:07,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:07,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:57:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:07,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 16:57:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:07,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 16:57:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:07,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:07,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 16:57:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:07,023 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 16:57:07,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:07,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974986248] [2022-07-22 16:57:07,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974986248] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:07,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356588634] [2022-07-22 16:57:07,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:07,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:07,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:07,026 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:57:07,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 16:57:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:07,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 16:57:07,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:07,357 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 16:57:07,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:07,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356588634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:07,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:07,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-07-22 16:57:07,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239496838] [2022-07-22 16:57:07,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:07,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:57:07,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:07,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:57:07,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:57:07,360 INFO L87 Difference]: Start difference. First operand 611 states and 952 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:57:07,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:07,779 INFO L93 Difference]: Finished difference Result 1154 states and 1850 transitions. [2022-07-22 16:57:07,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:57:07,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2022-07-22 16:57:07,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:07,781 INFO L225 Difference]: With dead ends: 1154 [2022-07-22 16:57:07,781 INFO L226 Difference]: Without dead ends: 619 [2022-07-22 16:57:07,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:57:07,784 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 844 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 2194 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:07,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 2194 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 16:57:07,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-07-22 16:57:07,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2022-07-22 16:57:07,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 491 states have (on average 1.560081466395112) internal successors, (766), 506 states have internal predecessors, (766), 99 states have call successors, (99), 29 states have call predecessors, (99), 28 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2022-07-22 16:57:07,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 965 transitions. [2022-07-22 16:57:07,853 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 965 transitions. Word has length 118 [2022-07-22 16:57:07,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:07,854 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 965 transitions. [2022-07-22 16:57:07,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:57:07,854 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 965 transitions. [2022-07-22 16:57:07,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-22 16:57:07,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:07,857 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:07,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 16:57:08,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:08,072 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:08,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:08,072 INFO L85 PathProgramCache]: Analyzing trace with hash 557854339, now seen corresponding path program 1 times [2022-07-22 16:57:08,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:08,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13906171] [2022-07-22 16:57:08,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:08,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:08,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:08,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:08,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:08,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:08,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:08,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:57:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:08,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 16:57:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:08,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:08,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:08,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 16:57:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:08,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 16:57:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:08,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 16:57:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:08,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:08,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 16:57:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:08,230 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-22 16:57:08,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:08,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13906171] [2022-07-22 16:57:08,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13906171] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:08,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040757191] [2022-07-22 16:57:08,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:08,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:08,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:08,236 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:57:08,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 16:57:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:08,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 16:57:08,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:08,569 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-22 16:57:08,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:08,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040757191] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:08,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:08,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-07-22 16:57:08,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533339620] [2022-07-22 16:57:08,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:08,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:57:08,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:08,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:57:08,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:57:08,571 INFO L87 Difference]: Start difference. First operand 619 states and 965 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:57:08,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:08,950 INFO L93 Difference]: Finished difference Result 1170 states and 1873 transitions. [2022-07-22 16:57:08,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:57:08,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2022-07-22 16:57:08,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:08,954 INFO L225 Difference]: With dead ends: 1170 [2022-07-22 16:57:08,954 INFO L226 Difference]: Without dead ends: 627 [2022-07-22 16:57:08,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:57:08,957 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 842 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 2194 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:08,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 2194 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 16:57:08,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2022-07-22 16:57:09,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 627. [2022-07-22 16:57:09,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 498 states have (on average 1.5622489959839359) internal successors, (778), 513 states have internal predecessors, (778), 99 states have call successors, (99), 30 states have call predecessors, (99), 29 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2022-07-22 16:57:09,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 978 transitions. [2022-07-22 16:57:09,022 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 978 transitions. Word has length 121 [2022-07-22 16:57:09,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:09,022 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 978 transitions. [2022-07-22 16:57:09,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:57:09,022 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 978 transitions. [2022-07-22 16:57:09,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-22 16:57:09,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:09,025 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:09,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 16:57:09,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:09,239 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:09,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:09,240 INFO L85 PathProgramCache]: Analyzing trace with hash -458123991, now seen corresponding path program 1 times [2022-07-22 16:57:09,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:09,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848638948] [2022-07-22 16:57:09,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:09,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:09,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:09,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:09,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:09,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:09,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:09,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 16:57:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:09,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:57:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:09,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:09,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:09,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 16:57:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:09,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 16:57:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:09,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 16:57:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:09,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:09,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 16:57:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:09,434 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-22 16:57:09,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:09,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848638948] [2022-07-22 16:57:09,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848638948] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:09,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023562489] [2022-07-22 16:57:09,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:09,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:09,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:09,437 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:57:09,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 16:57:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:09,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 1225 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 16:57:09,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:09,767 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-22 16:57:09,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:09,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023562489] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:09,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:09,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-07-22 16:57:09,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345311745] [2022-07-22 16:57:09,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:09,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:57:09,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:09,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:57:09,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:57:09,770 INFO L87 Difference]: Start difference. First operand 627 states and 978 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:57:10,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:10,197 INFO L93 Difference]: Finished difference Result 1186 states and 1896 transitions. [2022-07-22 16:57:10,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:57:10,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2022-07-22 16:57:10,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:10,201 INFO L225 Difference]: With dead ends: 1186 [2022-07-22 16:57:10,201 INFO L226 Difference]: Without dead ends: 635 [2022-07-22 16:57:10,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:57:10,204 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 819 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 2194 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:10,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 2194 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 16:57:10,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2022-07-22 16:57:10,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2022-07-22 16:57:10,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 505 states have (on average 1.5643564356435644) internal successors, (790), 520 states have internal predecessors, (790), 99 states have call successors, (99), 31 states have call predecessors, (99), 30 states have return successors, (102), 96 states have call predecessors, (102), 98 states have call successors, (102) [2022-07-22 16:57:10,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 991 transitions. [2022-07-22 16:57:10,268 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 991 transitions. Word has length 124 [2022-07-22 16:57:10,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:10,269 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 991 transitions. [2022-07-22 16:57:10,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:57:10,269 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 991 transitions. [2022-07-22 16:57:10,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-22 16:57:10,271 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:10,271 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:10,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-22 16:57:10,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:10,495 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:10,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:10,495 INFO L85 PathProgramCache]: Analyzing trace with hash 698932287, now seen corresponding path program 1 times [2022-07-22 16:57:10,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:10,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63854326] [2022-07-22 16:57:10,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:10,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:10,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:10,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:10,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:10,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:10,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:10,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:57:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:10,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:57:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:10,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:10,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:10,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:57:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:10,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 16:57:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:10,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 16:57:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:10,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:10,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 16:57:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:10,789 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 16:57:10,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:10,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63854326] [2022-07-22 16:57:10,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63854326] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:10,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509956111] [2022-07-22 16:57:10,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:10,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:10,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:10,792 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:57:10,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 16:57:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:10,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 1228 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-22 16:57:10,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:11,125 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 16:57:11,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:11,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509956111] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:11,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:11,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-22 16:57:11,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968407873] [2022-07-22 16:57:11,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:11,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:57:11,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:11,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:57:11,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:57:11,128 INFO L87 Difference]: Start difference. First operand 635 states and 991 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:57:11,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:11,608 INFO L93 Difference]: Finished difference Result 1759 states and 2839 transitions. [2022-07-22 16:57:11,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:57:11,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2022-07-22 16:57:11,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:11,614 INFO L225 Difference]: With dead ends: 1759 [2022-07-22 16:57:11,614 INFO L226 Difference]: Without dead ends: 1200 [2022-07-22 16:57:11,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:57:11,617 INFO L413 NwaCegarLoop]: 1006 mSDtfsCounter, 816 mSDsluCounter, 2625 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 3631 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:11,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 3631 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 16:57:11,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2022-07-22 16:57:11,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1192. [2022-07-22 16:57:11,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 940 states have (on average 1.5882978723404255) internal successors, (1493), 971 states have internal predecessors, (1493), 192 states have call successors, (192), 59 states have call predecessors, (192), 59 states have return successors, (218), 187 states have call predecessors, (218), 190 states have call successors, (218) [2022-07-22 16:57:11,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1903 transitions. [2022-07-22 16:57:11,742 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1903 transitions. Word has length 127 [2022-07-22 16:57:11,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:11,742 INFO L495 AbstractCegarLoop]: Abstraction has 1192 states and 1903 transitions. [2022-07-22 16:57:11,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:57:11,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1903 transitions. [2022-07-22 16:57:11,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-22 16:57:11,745 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:11,745 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:11,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 16:57:11,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-22 16:57:11,959 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:11,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:11,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1019830482, now seen corresponding path program 1 times [2022-07-22 16:57:11,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:11,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024989943] [2022-07-22 16:57:11,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:11,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:12,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:12,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:12,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:12,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:12,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:12,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:57:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:12,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:57:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:12,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:12,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:12,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:57:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:12,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 16:57:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:12,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:57:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:12,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 16:57:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:12,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:12,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 16:57:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:12,207 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 16:57:12,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:12,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024989943] [2022-07-22 16:57:12,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024989943] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:12,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256307756] [2022-07-22 16:57:12,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:12,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:12,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:12,212 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:57:12,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 16:57:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:12,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 1245 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 16:57:12,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:12,426 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 16:57:12,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:12,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256307756] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:12,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:12,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-07-22 16:57:12,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344643504] [2022-07-22 16:57:12,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:12,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 16:57:12,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:12,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 16:57:12,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:57:12,429 INFO L87 Difference]: Start difference. First operand 1192 states and 1903 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 16:57:12,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:12,614 INFO L93 Difference]: Finished difference Result 2858 states and 4648 transitions. [2022-07-22 16:57:12,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 16:57:12,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2022-07-22 16:57:12,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:12,622 INFO L225 Difference]: With dead ends: 2858 [2022-07-22 16:57:12,622 INFO L226 Difference]: Without dead ends: 1743 [2022-07-22 16:57:12,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:57:12,626 INFO L413 NwaCegarLoop]: 1686 mSDtfsCounter, 832 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 2569 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:12,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 2569 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:57:12,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2022-07-22 16:57:12,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1192. [2022-07-22 16:57:12,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 940 states have (on average 1.5872340425531914) internal successors, (1492), 971 states have internal predecessors, (1492), 192 states have call successors, (192), 59 states have call predecessors, (192), 59 states have return successors, (218), 187 states have call predecessors, (218), 190 states have call successors, (218) [2022-07-22 16:57:12,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1902 transitions. [2022-07-22 16:57:12,733 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1902 transitions. Word has length 132 [2022-07-22 16:57:12,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:12,733 INFO L495 AbstractCegarLoop]: Abstraction has 1192 states and 1902 transitions. [2022-07-22 16:57:12,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 16:57:12,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1902 transitions. [2022-07-22 16:57:12,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-22 16:57:12,736 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:12,736 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:12,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 16:57:12,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:12,951 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:12,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:12,952 INFO L85 PathProgramCache]: Analyzing trace with hash -318230608, now seen corresponding path program 1 times [2022-07-22 16:57:12,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:12,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43707123] [2022-07-22 16:57:12,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:12,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:13,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:13,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:13,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:13,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:13,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:13,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:57:13,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:13,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:57:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:13,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:13,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:13,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:57:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:13,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 16:57:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:13,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:57:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:13,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 16:57:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:13,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:13,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 16:57:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:13,230 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 16:57:13,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:13,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43707123] [2022-07-22 16:57:13,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43707123] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:13,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192636098] [2022-07-22 16:57:13,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:13,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:13,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:13,235 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:57:13,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 16:57:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:13,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 1244 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 16:57:13,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:13,527 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 16:57:13,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:13,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192636098] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:13,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:13,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-22 16:57:13,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52688232] [2022-07-22 16:57:13,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:13,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:57:13,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:13,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:57:13,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:57:13,529 INFO L87 Difference]: Start difference. First operand 1192 states and 1902 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 16:57:13,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:13,760 INFO L93 Difference]: Finished difference Result 2968 states and 4819 transitions. [2022-07-22 16:57:13,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:57:13,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2022-07-22 16:57:13,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:13,769 INFO L225 Difference]: With dead ends: 2968 [2022-07-22 16:57:13,769 INFO L226 Difference]: Without dead ends: 1854 [2022-07-22 16:57:13,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-07-22 16:57:13,775 INFO L413 NwaCegarLoop]: 1034 mSDtfsCounter, 393 mSDsluCounter, 2959 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 3993 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:13,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 3993 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:57:13,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2022-07-22 16:57:13,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1842. [2022-07-22 16:57:13,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1454 states have (on average 1.5632737276478679) internal successors, (2273), 1489 states have internal predecessors, (2273), 288 states have call successors, (288), 99 states have call predecessors, (288), 99 states have return successors, (365), 279 states have call predecessors, (365), 284 states have call successors, (365) [2022-07-22 16:57:13,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2926 transitions. [2022-07-22 16:57:13,920 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2926 transitions. Word has length 132 [2022-07-22 16:57:13,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:13,920 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2926 transitions. [2022-07-22 16:57:13,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 16:57:13,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2926 transitions. [2022-07-22 16:57:13,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-22 16:57:13,924 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:13,924 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:13,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 16:57:14,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:14,126 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:14,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:14,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1534384334, now seen corresponding path program 1 times [2022-07-22 16:57:14,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:14,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986060789] [2022-07-22 16:57:14,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:14,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:14,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:14,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:14,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:14,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:14,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:14,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:57:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:14,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:57:14,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:14,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:14,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:14,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:57:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:14,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 16:57:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:14,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:57:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:14,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 16:57:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:14,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:14,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 16:57:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:14,368 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 16:57:14,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:14,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986060789] [2022-07-22 16:57:14,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986060789] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:14,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375494571] [2022-07-22 16:57:14,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:14,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:14,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:14,372 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:57:14,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 16:57:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:14,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 1241 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:57:14,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:14,653 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 16:57:14,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:14,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375494571] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:14,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:14,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 13 [2022-07-22 16:57:14,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638776782] [2022-07-22 16:57:14,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:14,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 16:57:14,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:14,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 16:57:14,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:57:14,655 INFO L87 Difference]: Start difference. First operand 1842 states and 2926 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 16:57:14,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:14,815 INFO L93 Difference]: Finished difference Result 3325 states and 5278 transitions. [2022-07-22 16:57:14,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 16:57:14,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2022-07-22 16:57:14,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:14,822 INFO L225 Difference]: With dead ends: 3325 [2022-07-22 16:57:14,822 INFO L226 Difference]: Without dead ends: 1561 [2022-07-22 16:57:14,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:57:14,829 INFO L413 NwaCegarLoop]: 989 mSDtfsCounter, 583 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:14,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1419 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:57:14,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2022-07-22 16:57:14,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1561. [2022-07-22 16:57:14,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1561 states, 1232 states have (on average 1.5405844155844155) internal successors, (1898), 1259 states have internal predecessors, (1898), 241 states have call successors, (241), 89 states have call predecessors, (241), 87 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2022-07-22 16:57:14,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 2435 transitions. [2022-07-22 16:57:14,985 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 2435 transitions. Word has length 132 [2022-07-22 16:57:14,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:14,985 INFO L495 AbstractCegarLoop]: Abstraction has 1561 states and 2435 transitions. [2022-07-22 16:57:14,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 16:57:14,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 2435 transitions. [2022-07-22 16:57:14,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-22 16:57:14,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:14,988 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:15,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 16:57:15,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-22 16:57:15,188 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:15,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:15,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1099131662, now seen corresponding path program 1 times [2022-07-22 16:57:15,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:15,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526139256] [2022-07-22 16:57:15,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:15,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:15,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:15,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:15,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:15,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:15,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:15,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:57:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:15,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 16:57:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:15,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:57:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:15,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 16:57:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:15,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 16:57:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:15,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 16:57:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:15,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 16:57:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:15,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 16:57:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:15,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-22 16:57:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:15,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:15,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-22 16:57:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:15,421 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-22 16:57:15,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:15,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526139256] [2022-07-22 16:57:15,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526139256] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:15,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208980536] [2022-07-22 16:57:15,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:15,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:15,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:15,424 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:57:15,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 16:57:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:15,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:57:15,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:15,667 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-22 16:57:15,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:15,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208980536] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:15,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:15,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-07-22 16:57:15,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318736192] [2022-07-22 16:57:15,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:15,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:57:15,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:15,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:57:15,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:57:15,669 INFO L87 Difference]: Start difference. First operand 1561 states and 2435 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:57:15,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:15,904 INFO L93 Difference]: Finished difference Result 3122 states and 4942 transitions. [2022-07-22 16:57:15,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:57:15,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 155 [2022-07-22 16:57:15,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:15,911 INFO L225 Difference]: With dead ends: 3122 [2022-07-22 16:57:15,911 INFO L226 Difference]: Without dead ends: 1639 [2022-07-22 16:57:15,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:57:15,916 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 213 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:15,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 2427 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:57:15,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2022-07-22 16:57:16,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1639. [2022-07-22 16:57:16,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1308 states have (on average 1.562691131498471) internal successors, (2044), 1335 states have internal predecessors, (2044), 241 states have call successors, (241), 91 states have call predecessors, (241), 89 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2022-07-22 16:57:16,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 2581 transitions. [2022-07-22 16:57:16,077 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 2581 transitions. Word has length 155 [2022-07-22 16:57:16,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:16,078 INFO L495 AbstractCegarLoop]: Abstraction has 1639 states and 2581 transitions. [2022-07-22 16:57:16,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:57:16,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 2581 transitions. [2022-07-22 16:57:16,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-22 16:57:16,080 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:16,080 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:16,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 16:57:16,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-22 16:57:16,281 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:16,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:16,281 INFO L85 PathProgramCache]: Analyzing trace with hash -855921282, now seen corresponding path program 1 times [2022-07-22 16:57:16,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:16,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388334792] [2022-07-22 16:57:16,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:16,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:57:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 16:57:16,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:57:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 16:57:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 16:57:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 16:57:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 16:57:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 16:57:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 16:57:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 16:57:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,524 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-22 16:57:16,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:16,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388334792] [2022-07-22 16:57:16,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388334792] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:16,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611501451] [2022-07-22 16:57:16,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:16,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:16,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:16,526 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:57:16,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 16:57:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:16,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:57:16,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:16,762 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 16:57:16,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:16,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611501451] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:16,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:16,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-07-22 16:57:16,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736236937] [2022-07-22 16:57:16,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:16,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:57:16,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:16,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:57:16,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:57:16,766 INFO L87 Difference]: Start difference. First operand 1639 states and 2581 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:57:17,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:17,062 INFO L93 Difference]: Finished difference Result 3278 states and 5232 transitions. [2022-07-22 16:57:17,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:57:17,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 160 [2022-07-22 16:57:17,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:17,069 INFO L225 Difference]: With dead ends: 3278 [2022-07-22 16:57:17,069 INFO L226 Difference]: Without dead ends: 1717 [2022-07-22 16:57:17,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:57:17,074 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 211 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:17,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 2427 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:57:17,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2022-07-22 16:57:17,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1717. [2022-07-22 16:57:17,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1384 states have (on average 1.5823699421965318) internal successors, (2190), 1411 states have internal predecessors, (2190), 241 states have call successors, (241), 93 states have call predecessors, (241), 91 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2022-07-22 16:57:17,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2727 transitions. [2022-07-22 16:57:17,259 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2727 transitions. Word has length 160 [2022-07-22 16:57:17,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:17,259 INFO L495 AbstractCegarLoop]: Abstraction has 1717 states and 2727 transitions. [2022-07-22 16:57:17,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:57:17,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2727 transitions. [2022-07-22 16:57:17,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-22 16:57:17,263 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:17,263 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:17,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 16:57:17,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-22 16:57:17,487 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:17,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:17,487 INFO L85 PathProgramCache]: Analyzing trace with hash -846370002, now seen corresponding path program 1 times [2022-07-22 16:57:17,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:17,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230280178] [2022-07-22 16:57:17,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:17,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:17,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:17,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:17,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:17,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:17,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:17,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:57:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:17,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 16:57:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:17,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:57:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:17,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 16:57:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:17,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 16:57:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:17,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 16:57:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:17,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 16:57:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:17,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-22 16:57:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:17,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-22 16:57:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:17,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:17,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-22 16:57:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:17,701 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-22 16:57:17,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:17,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230280178] [2022-07-22 16:57:17,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230280178] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:17,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484540711] [2022-07-22 16:57:17,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:17,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:17,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:17,703 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:57:17,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 16:57:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:17,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 1345 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:57:17,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-22 16:57:17,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:17,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484540711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:17,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:17,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-07-22 16:57:17,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591133784] [2022-07-22 16:57:17,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:17,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:57:17,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:17,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:57:17,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:57:17,928 INFO L87 Difference]: Start difference. First operand 1717 states and 2727 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:57:18,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:18,151 INFO L93 Difference]: Finished difference Result 3434 states and 5522 transitions. [2022-07-22 16:57:18,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:57:18,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 164 [2022-07-22 16:57:18,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:18,159 INFO L225 Difference]: With dead ends: 3434 [2022-07-22 16:57:18,159 INFO L226 Difference]: Without dead ends: 1795 [2022-07-22 16:57:18,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:57:18,165 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 209 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:18,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 2427 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:57:18,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2022-07-22 16:57:18,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1795. [2022-07-22 16:57:18,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1460 states have (on average 1.6) internal successors, (2336), 1487 states have internal predecessors, (2336), 241 states have call successors, (241), 95 states have call predecessors, (241), 93 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2022-07-22 16:57:18,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 2873 transitions. [2022-07-22 16:57:18,384 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 2873 transitions. Word has length 164 [2022-07-22 16:57:18,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:18,385 INFO L495 AbstractCegarLoop]: Abstraction has 1795 states and 2873 transitions. [2022-07-22 16:57:18,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:57:18,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 2873 transitions. [2022-07-22 16:57:18,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 16:57:18,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:18,389 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:18,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-22 16:57:18,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-22 16:57:18,600 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:18,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:18,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1660278638, now seen corresponding path program 1 times [2022-07-22 16:57:18,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:18,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752164122] [2022-07-22 16:57:18,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:18,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:18,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:18,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:18,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:18,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:18,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:18,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:57:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:18,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 16:57:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:18,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:57:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:18,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 16:57:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:18,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 16:57:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:18,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 16:57:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:18,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 16:57:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:18,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 16:57:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:18,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 16:57:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:18,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:18,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 16:57:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-22 16:57:18,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:18,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752164122] [2022-07-22 16:57:18,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752164122] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:18,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644778206] [2022-07-22 16:57:18,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:18,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:18,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:18,820 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:57:18,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 16:57:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:57:19,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:19,048 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 16:57:19,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:19,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644778206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:19,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:19,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-07-22 16:57:19,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949455351] [2022-07-22 16:57:19,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:19,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:57:19,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:19,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:57:19,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:57:19,050 INFO L87 Difference]: Start difference. First operand 1795 states and 2873 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:57:19,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:19,284 INFO L93 Difference]: Finished difference Result 3590 states and 5812 transitions. [2022-07-22 16:57:19,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:57:19,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 167 [2022-07-22 16:57:19,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:19,290 INFO L225 Difference]: With dead ends: 3590 [2022-07-22 16:57:19,290 INFO L226 Difference]: Without dead ends: 1873 [2022-07-22 16:57:19,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:57:19,294 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 207 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:19,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 2427 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:57:19,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2022-07-22 16:57:19,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1873. [2022-07-22 16:57:19,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1536 states have (on average 1.6158854166666667) internal successors, (2482), 1563 states have internal predecessors, (2482), 241 states have call successors, (241), 97 states have call predecessors, (241), 95 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2022-07-22 16:57:19,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 3019 transitions. [2022-07-22 16:57:19,433 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 3019 transitions. Word has length 167 [2022-07-22 16:57:19,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:19,433 INFO L495 AbstractCegarLoop]: Abstraction has 1873 states and 3019 transitions. [2022-07-22 16:57:19,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:57:19,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 3019 transitions. [2022-07-22 16:57:19,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-22 16:57:19,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:19,436 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:19,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-07-22 16:57:19,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-22 16:57:19,637 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:19,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:19,637 INFO L85 PathProgramCache]: Analyzing trace with hash -847536130, now seen corresponding path program 1 times [2022-07-22 16:57:19,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:19,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826850473] [2022-07-22 16:57:19,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:19,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:57:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 16:57:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:57:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 16:57:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 16:57:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 16:57:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 16:57:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 16:57:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 16:57:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-22 16:57:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:19,852 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-22 16:57:19,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:19,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826850473] [2022-07-22 16:57:19,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826850473] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:19,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377467446] [2022-07-22 16:57:19,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:19,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:19,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:19,856 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:57:19,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 16:57:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:20,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 1350 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:57:20,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:20,094 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-22 16:57:20,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:20,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377467446] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:20,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:20,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-07-22 16:57:20,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669358654] [2022-07-22 16:57:20,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:20,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:57:20,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:20,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:57:20,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:57:20,096 INFO L87 Difference]: Start difference. First operand 1873 states and 3019 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:57:20,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:20,346 INFO L93 Difference]: Finished difference Result 3746 states and 6102 transitions. [2022-07-22 16:57:20,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:57:20,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 169 [2022-07-22 16:57:20,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:20,355 INFO L225 Difference]: With dead ends: 3746 [2022-07-22 16:57:20,356 INFO L226 Difference]: Without dead ends: 1951 [2022-07-22 16:57:20,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:57:20,361 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 205 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:20,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 2427 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:57:20,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2022-07-22 16:57:20,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 1951. [2022-07-22 16:57:20,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1612 states have (on average 1.630272952853598) internal successors, (2628), 1639 states have internal predecessors, (2628), 241 states have call successors, (241), 99 states have call predecessors, (241), 97 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2022-07-22 16:57:20,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 3165 transitions. [2022-07-22 16:57:20,508 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 3165 transitions. Word has length 169 [2022-07-22 16:57:20,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:20,509 INFO L495 AbstractCegarLoop]: Abstraction has 1951 states and 3165 transitions. [2022-07-22 16:57:20,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:57:20,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 3165 transitions. [2022-07-22 16:57:20,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-22 16:57:20,513 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:20,513 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:20,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 16:57:20,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:20,736 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:20,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:20,736 INFO L85 PathProgramCache]: Analyzing trace with hash 297204973, now seen corresponding path program 1 times [2022-07-22 16:57:20,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:20,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878544755] [2022-07-22 16:57:20,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:20,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:20,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:20,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:20,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:20,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:20,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:20,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:57:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:20,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 16:57:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:20,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:57:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:20,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 16:57:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:20,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 16:57:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:20,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 16:57:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:20,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 16:57:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:20,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 16:57:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:20,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 16:57:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:20,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:20,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-22 16:57:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-22 16:57:20,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:20,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878544755] [2022-07-22 16:57:20,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878544755] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:20,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187563486] [2022-07-22 16:57:20,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:20,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:20,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:20,958 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:57:20,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 16:57:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:21,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 1347 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:57:21,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:21,266 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-22 16:57:21,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:21,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187563486] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:21,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:21,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-07-22 16:57:21,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820762758] [2022-07-22 16:57:21,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:21,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:57:21,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:21,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:57:21,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:57:21,268 INFO L87 Difference]: Start difference. First operand 1951 states and 3165 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:57:21,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:21,491 INFO L93 Difference]: Finished difference Result 3886 states and 6378 transitions. [2022-07-22 16:57:21,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:57:21,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 169 [2022-07-22 16:57:21,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:21,510 INFO L225 Difference]: With dead ends: 3886 [2022-07-22 16:57:21,510 INFO L226 Difference]: Without dead ends: 2013 [2022-07-22 16:57:21,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:57:21,518 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 69 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:21,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 2661 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:57:21,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2022-07-22 16:57:21,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1959. [2022-07-22 16:57:21,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1959 states, 1620 states have (on average 1.6271604938271604) internal successors, (2636), 1647 states have internal predecessors, (2636), 241 states have call successors, (241), 99 states have call predecessors, (241), 97 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2022-07-22 16:57:21,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3173 transitions. [2022-07-22 16:57:21,748 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3173 transitions. Word has length 169 [2022-07-22 16:57:21,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:21,749 INFO L495 AbstractCegarLoop]: Abstraction has 1959 states and 3173 transitions. [2022-07-22 16:57:21,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 16:57:21,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3173 transitions. [2022-07-22 16:57:21,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-07-22 16:57:21,754 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:21,755 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:21,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-22 16:57:21,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:21,977 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:21,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:21,978 INFO L85 PathProgramCache]: Analyzing trace with hash -2102386498, now seen corresponding path program 1 times [2022-07-22 16:57:21,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:21,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171567031] [2022-07-22 16:57:21,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:21,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:22,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:22,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:22,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:22,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:22,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:22,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:57:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:22,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:57:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:22,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:57:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:22,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 16:57:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:22,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 16:57:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:22,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 16:57:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:22,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 16:57:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:22,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 16:57:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:22,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 16:57:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:22,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-22 16:57:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:22,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:22,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-22 16:57:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-22 16:57:22,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:22,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171567031] [2022-07-22 16:57:22,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171567031] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:22,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779676900] [2022-07-22 16:57:22,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:22,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:22,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:22,228 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:57:22,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-22 16:57:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:22,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-22 16:57:22,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:22,718 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-22 16:57:22,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:57:22,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779676900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:22,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:57:22,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-07-22 16:57:22,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116741119] [2022-07-22 16:57:22,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:22,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 16:57:22,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:22,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 16:57:22,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:57:22,720 INFO L87 Difference]: Start difference. First operand 1959 states and 3173 transitions. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (17), 4 states have call predecessors, (17), 6 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 16:57:25,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:25,178 INFO L93 Difference]: Finished difference Result 6026 states and 9974 transitions. [2022-07-22 16:57:25,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 16:57:25,178 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (17), 4 states have call predecessors, (17), 6 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) Word has length 177 [2022-07-22 16:57:25,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:25,192 INFO L225 Difference]: With dead ends: 6026 [2022-07-22 16:57:25,193 INFO L226 Difference]: Without dead ends: 3773 [2022-07-22 16:57:25,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2022-07-22 16:57:25,201 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 1992 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 4291 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2097 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 4805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 4291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:25,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2097 Valid, 2792 Invalid, 4805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 4291 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 16:57:25,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3773 states. [2022-07-22 16:57:25,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3773 to 3693. [2022-07-22 16:57:25,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3693 states, 2996 states have (on average 1.6438584779706276) internal successors, (4925), 3076 states have internal predecessors, (4925), 499 states have call successors, (499), 179 states have call predecessors, (499), 197 states have return successors, (641), 495 states have call predecessors, (641), 495 states have call successors, (641) [2022-07-22 16:57:25,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3693 states to 3693 states and 6065 transitions. [2022-07-22 16:57:25,516 INFO L78 Accepts]: Start accepts. Automaton has 3693 states and 6065 transitions. Word has length 177 [2022-07-22 16:57:25,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:25,517 INFO L495 AbstractCegarLoop]: Abstraction has 3693 states and 6065 transitions. [2022-07-22 16:57:25,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (17), 4 states have call predecessors, (17), 6 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 16:57:25,517 INFO L276 IsEmpty]: Start isEmpty. Operand 3693 states and 6065 transitions. [2022-07-22 16:57:25,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-07-22 16:57:25,527 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:25,527 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:25,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-22 16:57:25,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:25,752 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:25,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:25,753 INFO L85 PathProgramCache]: Analyzing trace with hash 821416622, now seen corresponding path program 1 times [2022-07-22 16:57:25,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:25,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317394776] [2022-07-22 16:57:25,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:25,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:25,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:25,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:25,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:25,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:57:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:25,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:25,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:57:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:25,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:57:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:25,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 16:57:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:25,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 16:57:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:25,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 16:57:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:25,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 16:57:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:25,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 16:57:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:25,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 16:57:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:25,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 16:57:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:25,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-22 16:57:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:25,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:25,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-22 16:57:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:25,925 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-07-22 16:57:25,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:25,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317394776] [2022-07-22 16:57:25,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317394776] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:25,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:57:25,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 16:57:25,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831749230] [2022-07-22 16:57:25,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:25,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 16:57:25,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:25,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 16:57:25,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:57:25,928 INFO L87 Difference]: Start difference. First operand 3693 states and 6065 transitions. Second operand has 9 states, 8 states have (on average 13.75) internal successors, (110), 6 states have internal predecessors, (110), 3 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 16:57:29,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:29,498 INFO L93 Difference]: Finished difference Result 8258 states and 13736 transitions. [2022-07-22 16:57:29,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 16:57:29,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.75) internal successors, (110), 6 states have internal predecessors, (110), 3 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 177 [2022-07-22 16:57:29,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:29,520 INFO L225 Difference]: With dead ends: 8258 [2022-07-22 16:57:29,520 INFO L226 Difference]: Without dead ends: 4579 [2022-07-22 16:57:29,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-07-22 16:57:29,531 INFO L413 NwaCegarLoop]: 870 mSDtfsCounter, 807 mSDsluCounter, 2446 mSDsCounter, 0 mSdLazyCounter, 3556 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 3316 SdHoareTripleChecker+Invalid, 3734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 3556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:29,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 3316 Invalid, 3734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 3556 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 16:57:29,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4579 states. [2022-07-22 16:57:29,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4579 to 3707. [2022-07-22 16:57:29,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3707 states, 3010 states have (on average 1.6332225913621263) internal successors, (4916), 3090 states have internal predecessors, (4916), 499 states have call successors, (499), 179 states have call predecessors, (499), 197 states have return successors, (641), 495 states have call predecessors, (641), 495 states have call successors, (641) [2022-07-22 16:57:29,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3707 states to 3707 states and 6056 transitions. [2022-07-22 16:57:29,969 INFO L78 Accepts]: Start accepts. Automaton has 3707 states and 6056 transitions. Word has length 177 [2022-07-22 16:57:29,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:29,969 INFO L495 AbstractCegarLoop]: Abstraction has 3707 states and 6056 transitions. [2022-07-22 16:57:29,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.75) internal successors, (110), 6 states have internal predecessors, (110), 3 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 16:57:29,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3707 states and 6056 transitions. [2022-07-22 16:57:29,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-22 16:57:29,979 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:29,979 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:29,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-22 16:57:29,980 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:29,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:29,980 INFO L85 PathProgramCache]: Analyzing trace with hash -568017574, now seen corresponding path program 1 times [2022-07-22 16:57:29,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:29,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82630631] [2022-07-22 16:57:29,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:29,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:30,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:30,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:30,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:30,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 16:57:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:30,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:30,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 16:57:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:30,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:57:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:30,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 16:57:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:30,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 16:57:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:30,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 16:57:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:30,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 16:57:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:30,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 16:57:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:30,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 16:57:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:30,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-22 16:57:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:30,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 16:57:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:30,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:30,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-22 16:57:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:30,132 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-07-22 16:57:30,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:30,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82630631] [2022-07-22 16:57:30,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82630631] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:57:30,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:57:30,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 16:57:30,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886372451] [2022-07-22 16:57:30,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:57:30,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 16:57:30,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:30,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 16:57:30,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:57:30,134 INFO L87 Difference]: Start difference. First operand 3707 states and 6056 transitions. Second operand has 9 states, 8 states have (on average 14.5) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 16:57:33,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:57:33,474 INFO L93 Difference]: Finished difference Result 7921 states and 13243 transitions. [2022-07-22 16:57:33,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 16:57:33,475 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 14.5) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 183 [2022-07-22 16:57:33,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:57:33,488 INFO L225 Difference]: With dead ends: 7921 [2022-07-22 16:57:33,489 INFO L226 Difference]: Without dead ends: 4113 [2022-07-22 16:57:33,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:57:33,499 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 1453 mSDsluCounter, 2483 mSDsCounter, 0 mSdLazyCounter, 3437 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 3383 SdHoareTripleChecker+Invalid, 3811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 3437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 16:57:33,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1565 Valid, 3383 Invalid, 3811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 3437 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 16:57:33,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4113 states. [2022-07-22 16:57:33,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4113 to 3320. [2022-07-22 16:57:33,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3320 states, 2723 states have (on average 1.6742563349247155) internal successors, (4559), 2790 states have internal predecessors, (4559), 419 states have call successors, (419), 167 states have call predecessors, (419), 177 states have return successors, (511), 410 states have call predecessors, (511), 415 states have call successors, (511) [2022-07-22 16:57:33,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3320 states to 3320 states and 5489 transitions. [2022-07-22 16:57:33,822 INFO L78 Accepts]: Start accepts. Automaton has 3320 states and 5489 transitions. Word has length 183 [2022-07-22 16:57:33,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:57:33,822 INFO L495 AbstractCegarLoop]: Abstraction has 3320 states and 5489 transitions. [2022-07-22 16:57:33,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 14.5) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 16:57:33,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3320 states and 5489 transitions. [2022-07-22 16:57:33,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2022-07-22 16:57:33,831 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:57:33,831 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:57:33,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-22 16:57:33,831 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:57:33,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:57:33,832 INFO L85 PathProgramCache]: Analyzing trace with hash -964771486, now seen corresponding path program 1 times [2022-07-22 16:57:33,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:57:33,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64375081] [2022-07-22 16:57:33,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:33,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:57:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:57:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:57:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:57:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 16:57:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:57:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 16:57:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:57:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:57:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 16:57:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:57:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 16:57:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:57:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 16:57:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:57:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:57:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:34,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-22 16:57:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 16:57:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:57:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 16:57:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 16:57:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:57:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 16:57:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 16:57:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 16:57:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 16:57:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 16:57:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-07-22 16:57:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:57:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-07-22 16:57:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-07-22 16:57:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:57:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-07-22 16:57:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-07-22 16:57:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-07-22 16:57:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-07-22 16:57:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-07-22 16:57:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-07-22 16:57:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-07-22 16:57:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-07-22 16:57:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:57:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-07-22 16:57:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1215 backedges. 66 proven. 121 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2022-07-22 16:57:34,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:57:34,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64375081] [2022-07-22 16:57:34,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64375081] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:57:34,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728924105] [2022-07-22 16:57:34,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:57:34,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:57:34,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:57:34,392 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:57:34,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-22 16:57:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:57:34,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 3340 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 16:57:34,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:57:35,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1215 backedges. 671 proven. 17 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2022-07-22 16:57:35,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 16:57:36,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1215 backedges. 82 proven. 72 refuted. 0 times theorem prover too weak. 1061 trivial. 0 not checked. [2022-07-22 16:57:36,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728924105] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 16:57:36,169 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 16:57:36,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 14] total 35 [2022-07-22 16:57:36,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304444978] [2022-07-22 16:57:36,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 16:57:36,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-22 16:57:36,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:57:36,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-22 16:57:36,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1055, Unknown=0, NotChecked=0, Total=1190 [2022-07-22 16:57:36,172 INFO L87 Difference]: Start difference. First operand 3320 states and 5489 transitions. Second operand has 35 states, 33 states have (on average 14.757575757575758) internal successors, (487), 26 states have internal predecessors, (487), 19 states have call successors, (113), 12 states have call predecessors, (113), 15 states have return successors, (112), 23 states have call predecessors, (112), 19 states have call successors, (112)