./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8e3e095c3e35754b69c5b770f69d2f55696576eebdd6e61f09ab7280f663a93f --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:17:13,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:17:13,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:17:13,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:17:13,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:17:13,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:17:13,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:17:13,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:17:13,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:17:13,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:17:13,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:17:13,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:17:13,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:17:13,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:17:13,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:17:13,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:17:13,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:17:13,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:17:13,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:17:13,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:17:13,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:17:13,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:17:13,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:17:13,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:17:13,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:17:13,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:17:13,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:17:13,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:17:13,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:17:13,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:17:13,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:17:13,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:17:13,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:17:13,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:17:13,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:17:13,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:17:13,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:17:13,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:17:13,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:17:13,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:17:13,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:17:13,350 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 22:17:13,368 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:17:13,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:17:13,369 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:17:13,369 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:17:13,369 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:17:13,370 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:17:13,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:17:13,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:17:13,370 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:17:13,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:17:13,371 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:17:13,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:17:13,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:17:13,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:17:13,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:17:13,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:17:13,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:17:13,371 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:17:13,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:17:13,372 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:17:13,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:17:13,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:17:13,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:17:13,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:17:13,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:17:13,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:17:13,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:17:13,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:17:13,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:17:13,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:17:13,373 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:17:13,373 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:17:13,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:17:13,373 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:17:13,373 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e3e095c3e35754b69c5b770f69d2f55696576eebdd6e61f09ab7280f663a93f [2021-12-06 22:17:13,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:17:13,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:17:13,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:17:13,612 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:17:13,613 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:17:13,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c [2021-12-06 22:17:13,656 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/data/81b9c7c6d/597733348c2e459a8b8bfa1428036403/FLAG85e3a8e41 [2021-12-06 22:17:14,120 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:17:14,121 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c [2021-12-06 22:17:14,135 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/data/81b9c7c6d/597733348c2e459a8b8bfa1428036403/FLAG85e3a8e41 [2021-12-06 22:17:14,146 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/data/81b9c7c6d/597733348c2e459a8b8bfa1428036403 [2021-12-06 22:17:14,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:17:14,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:17:14,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:17:14,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:17:14,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:17:14,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:17:14" (1/1) ... [2021-12-06 22:17:14,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41405498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:14, skipping insertion in model container [2021-12-06 22:17:14,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:17:14" (1/1) ... [2021-12-06 22:17:14,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:17:14,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:17:14,386 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c[8585,8598] [2021-12-06 22:17:14,541 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:17:14,548 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:17:14,567 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/sv-benchmarks/c/product-lines/elevator_spec14_product23.cil.c[8585,8598] [2021-12-06 22:17:14,630 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:17:14,651 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:17:14,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:14 WrapperNode [2021-12-06 22:17:14,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:17:14,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:17:14,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:17:14,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:17:14,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:14" (1/1) ... [2021-12-06 22:17:14,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:14" (1/1) ... [2021-12-06 22:17:14,715 INFO L137 Inliner]: procedures = 93, calls = 340, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 854 [2021-12-06 22:17:14,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:17:14,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:17:14,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:17:14,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:17:14,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:14" (1/1) ... [2021-12-06 22:17:14,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:14" (1/1) ... [2021-12-06 22:17:14,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:14" (1/1) ... [2021-12-06 22:17:14,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:14" (1/1) ... [2021-12-06 22:17:14,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:14" (1/1) ... [2021-12-06 22:17:14,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:14" (1/1) ... [2021-12-06 22:17:14,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:14" (1/1) ... [2021-12-06 22:17:14,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:17:14,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:17:14,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:17:14,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:17:14,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:14" (1/1) ... [2021-12-06 22:17:14,780 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:17:14,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:17:14,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:17:14,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:17:14,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:17:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-12-06 22:17:14,851 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-12-06 22:17:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-12-06 22:17:14,851 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-12-06 22:17:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-12-06 22:17:14,851 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-12-06 22:17:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-06 22:17:14,851 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-06 22:17:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2021-12-06 22:17:14,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2021-12-06 22:17:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-06 22:17:14,852 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-06 22:17:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2021-12-06 22:17:14,852 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2021-12-06 22:17:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-06 22:17:14,852 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-06 22:17:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-06 22:17:14,853 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-06 22:17:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-06 22:17:14,853 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-06 22:17:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-06 22:17:14,853 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-06 22:17:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-06 22:17:14,853 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-06 22:17:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-06 22:17:14,853 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-06 22:17:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-12-06 22:17:14,854 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-12-06 22:17:14,854 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-06 22:17:14,854 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-06 22:17:14,854 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-06 22:17:14,854 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-06 22:17:14,854 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-06 22:17:14,854 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-06 22:17:14,854 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-06 22:17:14,854 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-06 22:17:14,854 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-06 22:17:14,854 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-06 22:17:14,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:17:14,854 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-12-06 22:17:14,855 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-12-06 22:17:14,855 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-06 22:17:14,855 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-06 22:17:14,855 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-06 22:17:14,855 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-06 22:17:14,855 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-06 22:17:14,855 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-06 22:17:14,855 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2021-12-06 22:17:14,855 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2021-12-06 22:17:14,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:17:14,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:17:14,856 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-06 22:17:14,856 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-06 22:17:14,972 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:17:14,974 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:17:15,624 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:17:15,639 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:17:15,639 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 22:17:15,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:17:15 BoogieIcfgContainer [2021-12-06 22:17:15,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:17:15,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:17:15,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:17:15,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:17:15,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:17:14" (1/3) ... [2021-12-06 22:17:15,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ee2568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:17:15, skipping insertion in model container [2021-12-06 22:17:15,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:14" (2/3) ... [2021-12-06 22:17:15,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ee2568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:17:15, skipping insertion in model container [2021-12-06 22:17:15,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:17:15" (3/3) ... [2021-12-06 22:17:15,650 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product23.cil.c [2021-12-06 22:17:15,655 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:17:15,656 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:17:15,702 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:17:15,709 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 22:17:15,709 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:17:15,743 INFO L276 IsEmpty]: Start isEmpty. Operand has 559 states, 433 states have (on average 1.6651270207852193) internal successors, (721), 449 states have internal predecessors, (721), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 97 states have call predecessors, (99), 99 states have call successors, (99) [2021-12-06 22:17:15,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-06 22:17:15,767 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:15,768 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:17:15,768 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:15,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:15,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1816535566, now seen corresponding path program 1 times [2021-12-06 22:17:15,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:15,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205753124] [2021-12-06 22:17:15,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:15,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:16,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:17:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:16,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:16,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:17:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:16,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 22:17:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:16,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:16,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 22:17:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:16,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:17:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:16,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:16,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:16,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:17:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:16,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 22:17:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:16,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:17:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:16,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:16,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:17:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:16,217 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:17:16,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:16,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205753124] [2021-12-06 22:17:16,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205753124] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:16,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:16,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:17:16,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196240432] [2021-12-06 22:17:16,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:16,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:17:16,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:16,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:17:16,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:17:16,251 INFO L87 Difference]: Start difference. First operand has 559 states, 433 states have (on average 1.6651270207852193) internal successors, (721), 449 states have internal predecessors, (721), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 97 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:17:19,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:19,035 INFO L93 Difference]: Finished difference Result 1315 states and 2194 transitions. [2021-12-06 22:17:19,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:17:19,038 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 [2021-12-06 22:17:19,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:19,055 INFO L225 Difference]: With dead ends: 1315 [2021-12-06 22:17:19,056 INFO L226 Difference]: Without dead ends: 752 [2021-12-06 22:17:19,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:17:19,069 INFO L933 BasicCegarLoop]: 899 mSDtfsCounter, 1369 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 1976 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 2414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 1976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:19,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1416 Valid, 1902 Invalid, 2414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 1976 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 22:17:19,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-12-06 22:17:19,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 554. [2021-12-06 22:17:19,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 429 states have (on average 1.655011655011655) internal successors, (710), 444 states have internal predecessors, (710), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2021-12-06 22:17:19,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 907 transitions. [2021-12-06 22:17:19,200 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 907 transitions. Word has length 103 [2021-12-06 22:17:19,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:19,200 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 907 transitions. [2021-12-06 22:17:19,200 INFO L471 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) [2021-12-06 22:17:19,200 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 907 transitions. [2021-12-06 22:17:19,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-06 22:17:19,207 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:19,207 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:17:19,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:17:19,208 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:19,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:19,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1386883550, now seen corresponding path program 1 times [2021-12-06 22:17:19,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:19,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600248920] [2021-12-06 22:17:19,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:19,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:17:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:17:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:17:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 22:17:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:17:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:17:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:17:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:17:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 22:17:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:17:19,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:19,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600248920] [2021-12-06 22:17:19,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600248920] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:19,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:19,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:17:19,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515656891] [2021-12-06 22:17:19,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:19,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:17:19,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:19,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:17:19,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:17:19,417 INFO L87 Difference]: Start difference. First operand 554 states and 907 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:17:21,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:21,806 INFO L93 Difference]: Finished difference Result 1289 states and 2121 transitions. [2021-12-06 22:17:21,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:17:21,807 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 [2021-12-06 22:17:21,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:21,812 INFO L225 Difference]: With dead ends: 1289 [2021-12-06 22:17:21,812 INFO L226 Difference]: Without dead ends: 752 [2021-12-06 22:17:21,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:17:21,816 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 1361 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 1972 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1408 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 2408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 1972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:21,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1408 Valid, 1804 Invalid, 2408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 1972 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-06 22:17:21,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-12-06 22:17:21,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 554. [2021-12-06 22:17:21,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 429 states have (on average 1.6526806526806528) internal successors, (709), 444 states have internal predecessors, (709), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2021-12-06 22:17:21,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 906 transitions. [2021-12-06 22:17:21,873 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 906 transitions. Word has length 104 [2021-12-06 22:17:21,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:21,873 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 906 transitions. [2021-12-06 22:17:21,874 INFO L471 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) [2021-12-06 22:17:21,874 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 906 transitions. [2021-12-06 22:17:21,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-06 22:17:21,879 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:21,879 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:17:21,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 22:17:21,879 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:21,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:21,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1009573522, now seen corresponding path program 1 times [2021-12-06 22:17:21,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:21,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48352853] [2021-12-06 22:17:21,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:21,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:21,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:17:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:21,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:21,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:17:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:22,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 22:17:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:22,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:22,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:17:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:22,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 22:17:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:22,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:22,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:22,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:17:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:22,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:17:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:22,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:17:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:22,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:22,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 22:17:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:22,066 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:17:22,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:22,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48352853] [2021-12-06 22:17:22,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48352853] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:22,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:22,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:17:22,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366118189] [2021-12-06 22:17:22,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:22,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:17:22,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:22,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:17:22,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:17:22,069 INFO L87 Difference]: Start difference. First operand 554 states and 906 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:17:24,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:24,268 INFO L93 Difference]: Finished difference Result 1289 states and 2120 transitions. [2021-12-06 22:17:24,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:17:24,268 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 [2021-12-06 22:17:24,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:24,273 INFO L225 Difference]: With dead ends: 1289 [2021-12-06 22:17:24,273 INFO L226 Difference]: Without dead ends: 752 [2021-12-06 22:17:24,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:17:24,276 INFO L933 BasicCegarLoop]: 879 mSDtfsCounter, 1352 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 1969 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 2405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 1969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:24,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1399 Valid, 1819 Invalid, 2405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 1969 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 22:17:24,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-12-06 22:17:24,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 554. [2021-12-06 22:17:24,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 429 states have (on average 1.6503496503496504) internal successors, (708), 444 states have internal predecessors, (708), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2021-12-06 22:17:24,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 905 transitions. [2021-12-06 22:17:24,331 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 905 transitions. Word has length 105 [2021-12-06 22:17:24,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:24,331 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 905 transitions. [2021-12-06 22:17:24,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (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) [2021-12-06 22:17:24,331 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 905 transitions. [2021-12-06 22:17:24,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 22:17:24,334 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:24,334 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:17:24,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 22:17:24,335 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:24,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:24,335 INFO L85 PathProgramCache]: Analyzing trace with hash 2040102174, now seen corresponding path program 1 times [2021-12-06 22:17:24,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:24,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417989133] [2021-12-06 22:17:24,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:24,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:24,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:17:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:24,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:24,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 22:17:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:24,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:17:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:24,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:24,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 22:17:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:24,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 22:17:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:24,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:24,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:24,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:17:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:24,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:17:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:24,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:17:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:24,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:24,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:17:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:24,483 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:17:24,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:24,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417989133] [2021-12-06 22:17:24,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417989133] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:24,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:24,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:17:24,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428711622] [2021-12-06 22:17:24,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:24,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:17:24,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:24,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:17:24,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:17:24,486 INFO L87 Difference]: Start difference. First operand 554 states and 905 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:17:26,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:26,701 INFO L93 Difference]: Finished difference Result 1289 states and 2119 transitions. [2021-12-06 22:17:26,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:17:26,701 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 [2021-12-06 22:17:26,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:26,705 INFO L225 Difference]: With dead ends: 1289 [2021-12-06 22:17:26,705 INFO L226 Difference]: Without dead ends: 752 [2021-12-06 22:17:26,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:17:26,708 INFO L933 BasicCegarLoop]: 879 mSDtfsCounter, 1347 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 2407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:26,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1394 Valid, 1818 Invalid, 2407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 1973 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 22:17:26,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-12-06 22:17:26,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 554. [2021-12-06 22:17:26,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 429 states have (on average 1.648018648018648) internal successors, (707), 444 states have internal predecessors, (707), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2021-12-06 22:17:26,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 904 transitions. [2021-12-06 22:17:26,751 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 904 transitions. Word has length 106 [2021-12-06 22:17:26,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:26,751 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 904 transitions. [2021-12-06 22:17:26,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (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) [2021-12-06 22:17:26,752 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 904 transitions. [2021-12-06 22:17:26,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-06 22:17:26,755 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:26,755 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:17:26,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 22:17:26,755 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:26,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:26,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2033767658, now seen corresponding path program 1 times [2021-12-06 22:17:26,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:26,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900134732] [2021-12-06 22:17:26,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:26,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:26,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:17:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:26,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:26,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 22:17:26,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:26,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 22:17:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:26,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:26,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 22:17:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:26,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 22:17:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:26,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:26,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:26,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:17:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:26,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:17:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:26,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:17:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:26,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:26,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 22:17:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:26,886 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:17:26,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:26,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900134732] [2021-12-06 22:17:26,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900134732] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:26,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:26,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:17:26,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567584932] [2021-12-06 22:17:26,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:26,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:17:26,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:26,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:17:26,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:17:26,888 INFO L87 Difference]: Start difference. First operand 554 states and 904 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:17:29,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:29,151 INFO L93 Difference]: Finished difference Result 1289 states and 2118 transitions. [2021-12-06 22:17:29,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:17:29,151 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 [2021-12-06 22:17:29,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:29,155 INFO L225 Difference]: With dead ends: 1289 [2021-12-06 22:17:29,156 INFO L226 Difference]: Without dead ends: 752 [2021-12-06 22:17:29,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:17:29,158 INFO L933 BasicCegarLoop]: 857 mSDtfsCounter, 1363 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 1962 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1410 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 2399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 1962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:29,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1410 Valid, 1753 Invalid, 2399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 1962 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 22:17:29,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-12-06 22:17:29,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 554. [2021-12-06 22:17:29,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 429 states have (on average 1.6456876456876457) internal successors, (706), 444 states have internal predecessors, (706), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2021-12-06 22:17:29,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 903 transitions. [2021-12-06 22:17:29,202 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 903 transitions. Word has length 107 [2021-12-06 22:17:29,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:29,202 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 903 transitions. [2021-12-06 22:17:29,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (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) [2021-12-06 22:17:29,202 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 903 transitions. [2021-12-06 22:17:29,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 22:17:29,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:29,205 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:17:29,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 22:17:29,205 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:29,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:29,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1780397082, now seen corresponding path program 1 times [2021-12-06 22:17:29,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:29,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604977728] [2021-12-06 22:17:29,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:29,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:29,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:17:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:29,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:29,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:17:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:29,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:17:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:29,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:29,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 22:17:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:29,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:17:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:29,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:29,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:29,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:17:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:29,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:17:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:29,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 22:17:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:29,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:29,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:17:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:29,336 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:17:29,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:29,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604977728] [2021-12-06 22:17:29,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604977728] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:29,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:29,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:17:29,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375245467] [2021-12-06 22:17:29,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:29,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:17:29,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:29,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:17:29,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:17:29,338 INFO L87 Difference]: Start difference. First operand 554 states and 903 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:17:31,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:31,670 INFO L93 Difference]: Finished difference Result 1314 states and 2162 transitions. [2021-12-06 22:17:31,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:17:31,671 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 [2021-12-06 22:17:31,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:31,675 INFO L225 Difference]: With dead ends: 1314 [2021-12-06 22:17:31,675 INFO L226 Difference]: Without dead ends: 781 [2021-12-06 22:17:31,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:17:31,677 INFO L933 BasicCegarLoop]: 847 mSDtfsCounter, 1406 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 507 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 2438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 507 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:31,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1453 Valid, 1784 Invalid, 2438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [507 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 22:17:31,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-12-06 22:17:31,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 574. [2021-12-06 22:17:31,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 448 states have (on average 1.640625) internal successors, (735), 463 states have internal predecessors, (735), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2021-12-06 22:17:31,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 932 transitions. [2021-12-06 22:17:31,721 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 932 transitions. Word has length 108 [2021-12-06 22:17:31,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:31,721 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 932 transitions. [2021-12-06 22:17:31,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (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) [2021-12-06 22:17:31,722 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 932 transitions. [2021-12-06 22:17:31,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-06 22:17:31,724 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:31,724 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:17:31,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 22:17:31,724 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:31,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:31,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1328279333, now seen corresponding path program 1 times [2021-12-06 22:17:31,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:31,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438915496] [2021-12-06 22:17:31,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:31,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:31,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:17:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:31,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:31,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:17:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:31,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 22:17:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:31,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:31,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 22:17:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:31,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 22:17:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:31,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:31,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:31,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:17:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:31,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:17:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:31,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 22:17:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:31,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:31,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:17:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:31,857 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:17:31,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:31,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438915496] [2021-12-06 22:17:31,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438915496] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:31,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:31,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:17:31,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662709017] [2021-12-06 22:17:31,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:31,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:17:31,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:31,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:17:31,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:17:31,858 INFO L87 Difference]: Start difference. First operand 574 states and 932 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:17:33,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:33,959 INFO L93 Difference]: Finished difference Result 1298 states and 2113 transitions. [2021-12-06 22:17:33,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:17:33,959 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 [2021-12-06 22:17:33,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:33,963 INFO L225 Difference]: With dead ends: 1298 [2021-12-06 22:17:33,963 INFO L226 Difference]: Without dead ends: 781 [2021-12-06 22:17:33,965 INFO L932 BasicCegarLoop]: 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 [2021-12-06 22:17:33,966 INFO L933 BasicCegarLoop]: 831 mSDtfsCounter, 1371 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 1937 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1418 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 2435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 1937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:33,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1418 Valid, 1755 Invalid, 2435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 1937 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 22:17:33,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-12-06 22:17:34,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 574. [2021-12-06 22:17:34,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 448 states have (on average 1.6294642857142858) internal successors, (730), 463 states have internal predecessors, (730), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2021-12-06 22:17:34,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 927 transitions. [2021-12-06 22:17:34,009 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 927 transitions. Word has length 109 [2021-12-06 22:17:34,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:34,009 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 927 transitions. [2021-12-06 22:17:34,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (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) [2021-12-06 22:17:34,010 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 927 transitions. [2021-12-06 22:17:34,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-06 22:17:34,012 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:34,012 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:17:34,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 22:17:34,012 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:34,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:34,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1553712897, now seen corresponding path program 1 times [2021-12-06 22:17:34,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:34,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233632343] [2021-12-06 22:17:34,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:34,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:34,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:17:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:34,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:34,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:17:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:34,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 22:17:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:34,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:34,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 22:17:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:34,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:17:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:34,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:34,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:34,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:17:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:34,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:17:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:34,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:17:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:34,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:34,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:17:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:34,146 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:17:34,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:34,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233632343] [2021-12-06 22:17:34,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233632343] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:34,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:34,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:17:34,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305752162] [2021-12-06 22:17:34,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:34,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:17:34,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:34,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:17:34,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:17:34,148 INFO L87 Difference]: Start difference. First operand 574 states and 927 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:17:36,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:36,270 INFO L93 Difference]: Finished difference Result 1298 states and 2108 transitions. [2021-12-06 22:17:36,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:17:36,274 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 [2021-12-06 22:17:36,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:36,278 INFO L225 Difference]: With dead ends: 1298 [2021-12-06 22:17:36,278 INFO L226 Difference]: Without dead ends: 781 [2021-12-06 22:17:36,280 INFO L932 BasicCegarLoop]: 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 [2021-12-06 22:17:36,281 INFO L933 BasicCegarLoop]: 830 mSDtfsCounter, 1374 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 2411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:36,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1421 Valid, 1754 Invalid, 2411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 1922 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 22:17:36,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-12-06 22:17:36,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 574. [2021-12-06 22:17:36,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 448 states have (on average 1.6183035714285714) internal successors, (725), 463 states have internal predecessors, (725), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2021-12-06 22:17:36,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 922 transitions. [2021-12-06 22:17:36,325 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 922 transitions. Word has length 110 [2021-12-06 22:17:36,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:36,325 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 922 transitions. [2021-12-06 22:17:36,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (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) [2021-12-06 22:17:36,325 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 922 transitions. [2021-12-06 22:17:36,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-06 22:17:36,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:36,328 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:17:36,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 22:17:36,328 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:36,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:36,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1813012661, now seen corresponding path program 1 times [2021-12-06 22:17:36,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:36,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080751348] [2021-12-06 22:17:36,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:36,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:36,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:17:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:36,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:36,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:17:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:36,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:17:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:36,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:36,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 22:17:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:36,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 22:17:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:36,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:36,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:36,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:17:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:36,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:17:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:36,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:17:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:36,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:36,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:17:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:36,470 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:17:36,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:36,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080751348] [2021-12-06 22:17:36,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080751348] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:36,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:36,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:17:36,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752526046] [2021-12-06 22:17:36,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:36,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:17:36,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:36,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:17:36,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:17:36,472 INFO L87 Difference]: Start difference. First operand 574 states and 922 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) [2021-12-06 22:17:39,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:39,268 INFO L93 Difference]: Finished difference Result 1333 states and 2156 transitions. [2021-12-06 22:17:39,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:17:39,268 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 [2021-12-06 22:17:39,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:39,272 INFO L225 Difference]: With dead ends: 1333 [2021-12-06 22:17:39,272 INFO L226 Difference]: Without dead ends: 822 [2021-12-06 22:17:39,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2021-12-06 22:17:39,275 INFO L933 BasicCegarLoop]: 860 mSDtfsCounter, 1398 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 4188 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 3018 SdHoareTripleChecker+Invalid, 4637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 4188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:39,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1445 Valid, 3018 Invalid, 4637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 4188 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 22:17:39,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2021-12-06 22:17:39,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 578. [2021-12-06 22:17:39,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 452 states have (on average 1.6128318584070795) internal successors, (729), 467 states have internal predecessors, (729), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2021-12-06 22:17:39,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 926 transitions. [2021-12-06 22:17:39,319 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 926 transitions. Word has length 111 [2021-12-06 22:17:39,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:39,319 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 926 transitions. [2021-12-06 22:17:39,319 INFO L471 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) [2021-12-06 22:17:39,320 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 926 transitions. [2021-12-06 22:17:39,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-06 22:17:39,322 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:39,322 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:17:39,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 22:17:39,322 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:39,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:39,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1842564586, now seen corresponding path program 1 times [2021-12-06 22:17:39,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:39,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297809200] [2021-12-06 22:17:39,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:39,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:39,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:17:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:39,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:39,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:17:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:39,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:17:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:39,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:39,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 22:17:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:39,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 22:17:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:39,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:39,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:39,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:17:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:39,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:17:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:39,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:17:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:39,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:39,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:17:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:39,444 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:17:39,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:39,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297809200] [2021-12-06 22:17:39,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297809200] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:39,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:39,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:17:39,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965781639] [2021-12-06 22:17:39,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:39,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:17:39,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:39,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:17:39,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:17:39,446 INFO L87 Difference]: Start difference. First operand 578 states and 926 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:17:41,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:41,567 INFO L93 Difference]: Finished difference Result 1308 states and 2112 transitions. [2021-12-06 22:17:41,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:17:41,568 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 [2021-12-06 22:17:41,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:41,572 INFO L225 Difference]: With dead ends: 1308 [2021-12-06 22:17:41,572 INFO L226 Difference]: Without dead ends: 787 [2021-12-06 22:17:41,574 INFO L932 BasicCegarLoop]: 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 [2021-12-06 22:17:41,575 INFO L933 BasicCegarLoop]: 825 mSDtfsCounter, 1376 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 1906 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 2385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 1906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:41,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1423 Valid, 1739 Invalid, 2385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 1906 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 22:17:41,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-12-06 22:17:41,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 578. [2021-12-06 22:17:41,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 452 states have (on average 1.6017699115044248) internal successors, (724), 467 states have internal predecessors, (724), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2021-12-06 22:17:41,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 921 transitions. [2021-12-06 22:17:41,625 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 921 transitions. Word has length 111 [2021-12-06 22:17:41,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:41,626 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 921 transitions. [2021-12-06 22:17:41,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (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) [2021-12-06 22:17:41,626 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 921 transitions. [2021-12-06 22:17:41,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 22:17:41,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:41,628 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:17:41,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 22:17:41,629 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:41,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:41,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1552622241, now seen corresponding path program 1 times [2021-12-06 22:17:41,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:41,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877389622] [2021-12-06 22:17:41,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:41,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:41,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:17:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:41,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:41,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:17:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:41,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:17:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:41,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:41,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:17:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:41,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 22:17:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:41,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:41,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:41,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:17:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:41,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:17:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:41,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:17:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:41,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:41,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:17:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:41,787 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:17:41,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:41,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877389622] [2021-12-06 22:17:41,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877389622] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:41,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:41,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:17:41,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174662675] [2021-12-06 22:17:41,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:41,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:17:41,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:41,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:17:41,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:17:41,789 INFO L87 Difference]: Start difference. First operand 578 states and 921 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) [2021-12-06 22:17:44,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:44,780 INFO L93 Difference]: Finished difference Result 1341 states and 2155 transitions. [2021-12-06 22:17:44,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:17:44,781 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 [2021-12-06 22:17:44,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:44,785 INFO L225 Difference]: With dead ends: 1341 [2021-12-06 22:17:44,785 INFO L226 Difference]: Without dead ends: 828 [2021-12-06 22:17:44,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2021-12-06 22:17:44,787 INFO L933 BasicCegarLoop]: 835 mSDtfsCounter, 1420 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 4087 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 2901 SdHoareTripleChecker+Invalid, 4541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 4087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:44,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1467 Valid, 2901 Invalid, 4541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 4087 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-06 22:17:44,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2021-12-06 22:17:44,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 584. [2021-12-06 22:17:44,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 458 states have (on average 1.5938864628820961) internal successors, (730), 473 states have internal predecessors, (730), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2021-12-06 22:17:44,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 927 transitions. [2021-12-06 22:17:44,831 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 927 transitions. Word has length 112 [2021-12-06 22:17:44,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:44,832 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 927 transitions. [2021-12-06 22:17:44,832 INFO L471 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) [2021-12-06 22:17:44,832 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 927 transitions. [2021-12-06 22:17:44,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 22:17:44,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:44,834 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:17:44,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 22:17:44,834 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:44,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:44,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1998259740, now seen corresponding path program 1 times [2021-12-06 22:17:44,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:44,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656962254] [2021-12-06 22:17:44,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:44,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:44,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:17:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:44,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:44,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:17:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:44,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:17:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:44,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:44,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:17:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:44,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 22:17:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:44,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:44,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:44,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:17:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:44,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:17:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:44,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:17:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:44,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:44,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:17:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:44,967 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:17:44,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:44,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656962254] [2021-12-06 22:17:44,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656962254] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:44,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:44,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:17:44,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336898559] [2021-12-06 22:17:44,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:44,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:17:44,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:44,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:17:44,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:17:44,969 INFO L87 Difference]: Start difference. First operand 584 states and 927 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:17:47,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:47,099 INFO L93 Difference]: Finished difference Result 1323 states and 2121 transitions. [2021-12-06 22:17:47,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:17:47,099 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 [2021-12-06 22:17:47,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:47,103 INFO L225 Difference]: With dead ends: 1323 [2021-12-06 22:17:47,103 INFO L226 Difference]: Without dead ends: 796 [2021-12-06 22:17:47,105 INFO L932 BasicCegarLoop]: 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 [2021-12-06 22:17:47,105 INFO L933 BasicCegarLoop]: 832 mSDtfsCounter, 1368 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 2360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:47,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1415 Valid, 1758 Invalid, 2360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 22:17:47,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2021-12-06 22:17:47,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 584. [2021-12-06 22:17:47,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 458 states have (on average 1.5829694323144106) internal successors, (725), 473 states have internal predecessors, (725), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2021-12-06 22:17:47,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 922 transitions. [2021-12-06 22:17:47,155 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 922 transitions. Word has length 112 [2021-12-06 22:17:47,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:47,155 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 922 transitions. [2021-12-06 22:17:47,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (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) [2021-12-06 22:17:47,155 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 922 transitions. [2021-12-06 22:17:47,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-06 22:17:47,157 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:47,157 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:17:47,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 22:17:47,157 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:47,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:47,157 INFO L85 PathProgramCache]: Analyzing trace with hash -322221360, now seen corresponding path program 1 times [2021-12-06 22:17:47,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:47,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511406360] [2021-12-06 22:17:47,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:47,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:17:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:17:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:17:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:17:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:17:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:17:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:17:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:17:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 22:17:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,312 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:17:47,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:47,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511406360] [2021-12-06 22:17:47,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511406360] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:47,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:47,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:17:47,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16118609] [2021-12-06 22:17:47,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:47,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:17:47,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:47,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:17:47,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:17:47,314 INFO L87 Difference]: Start difference. First operand 584 states and 922 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) [2021-12-06 22:17:50,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:50,158 INFO L93 Difference]: Finished difference Result 1353 states and 2158 transitions. [2021-12-06 22:17:50,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:17:50,158 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 [2021-12-06 22:17:50,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:50,162 INFO L225 Difference]: With dead ends: 1353 [2021-12-06 22:17:50,162 INFO L226 Difference]: Without dead ends: 837 [2021-12-06 22:17:50,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2021-12-06 22:17:50,165 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 1395 mSDsluCounter, 2135 mSDsCounter, 0 mSdLazyCounter, 4068 mSolverCounterSat, 452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1442 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 4520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 4068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:50,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1442 Valid, 2979 Invalid, 4520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [452 Valid, 4068 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-06 22:17:50,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2021-12-06 22:17:50,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 592. [2021-12-06 22:17:50,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 466 states have (on average 1.5729613733905579) internal successors, (733), 481 states have internal predecessors, (733), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2021-12-06 22:17:50,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 930 transitions. [2021-12-06 22:17:50,210 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 930 transitions. Word has length 113 [2021-12-06 22:17:50,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:50,210 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 930 transitions. [2021-12-06 22:17:50,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (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) [2021-12-06 22:17:50,210 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 930 transitions. [2021-12-06 22:17:50,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-06 22:17:50,212 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:50,212 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:17:50,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 22:17:50,212 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:50,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:50,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1738993839, now seen corresponding path program 1 times [2021-12-06 22:17:50,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:50,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97326127] [2021-12-06 22:17:50,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:50,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:50,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:17:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:50,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:50,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:17:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:50,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:17:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:50,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:50,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:17:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:50,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:17:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:50,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:50,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:50,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:17:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:50,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:17:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:50,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:17:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:50,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:50,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 22:17:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:50,362 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:17:50,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:50,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97326127] [2021-12-06 22:17:50,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97326127] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:50,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:50,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:17:50,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317771265] [2021-12-06 22:17:50,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:50,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:17:50,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:50,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:17:50,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:17:50,364 INFO L87 Difference]: Start difference. First operand 592 states and 930 transitions. Second operand has 9 states, 8 states have (on average 8.5) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 22:17:53,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:53,047 INFO L93 Difference]: Finished difference Result 1354 states and 2151 transitions. [2021-12-06 22:17:53,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:17:53,047 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 113 [2021-12-06 22:17:53,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:53,051 INFO L225 Difference]: With dead ends: 1354 [2021-12-06 22:17:53,051 INFO L226 Difference]: Without dead ends: 837 [2021-12-06 22:17:53,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-12-06 22:17:53,054 INFO L933 BasicCegarLoop]: 866 mSDtfsCounter, 1408 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 4081 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 2994 SdHoareTripleChecker+Invalid, 4526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 4081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:53,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1455 Valid, 2994 Invalid, 4526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 4081 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 22:17:53,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2021-12-06 22:17:53,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 603. [2021-12-06 22:17:53,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 474 states have (on average 1.5675105485232068) internal successors, (743), 491 states have internal predecessors, (743), 100 states have call successors, (100), 27 states have call predecessors, (100), 28 states have return successors, (101), 97 states have call predecessors, (101), 99 states have call successors, (101) [2021-12-06 22:17:53,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 944 transitions. [2021-12-06 22:17:53,109 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 944 transitions. Word has length 113 [2021-12-06 22:17:53,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:53,109 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 944 transitions. [2021-12-06 22:17:53,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (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) [2021-12-06 22:17:53,109 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 944 transitions. [2021-12-06 22:17:53,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-06 22:17:53,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:53,111 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:17:53,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 22:17:53,111 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:53,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:53,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1755437904, now seen corresponding path program 1 times [2021-12-06 22:17:53,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:53,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98956062] [2021-12-06 22:17:53,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:53,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:53,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:17:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:53,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:53,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:17:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:53,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:17:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:53,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:53,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:17:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:53,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:17:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:53,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:53,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:53,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:17:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:53,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:17:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:53,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:17:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:53,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:53,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 22:17:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:53,214 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:17:53,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:53,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98956062] [2021-12-06 22:17:53,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98956062] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:53,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:53,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:17:53,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096058349] [2021-12-06 22:17:53,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:53,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:17:53,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:53,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:17:53,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:17:53,215 INFO L87 Difference]: Start difference. First operand 603 states and 944 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:17:55,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:55,314 INFO L93 Difference]: Finished difference Result 1404 states and 2215 transitions. [2021-12-06 22:17:55,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:17:55,315 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 [2021-12-06 22:17:55,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:55,318 INFO L225 Difference]: With dead ends: 1404 [2021-12-06 22:17:55,318 INFO L226 Difference]: Without dead ends: 798 [2021-12-06 22:17:55,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:17:55,321 INFO L933 BasicCegarLoop]: 858 mSDtfsCounter, 1324 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 1905 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 2342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 1905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:55,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1371 Valid, 1799 Invalid, 2342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 1905 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-06 22:17:55,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2021-12-06 22:17:55,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 584. [2021-12-06 22:17:55,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 458 states have (on average 1.5720524017467248) internal successors, (720), 473 states have internal predecessors, (720), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2021-12-06 22:17:55,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 917 transitions. [2021-12-06 22:17:55,375 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 917 transitions. Word has length 113 [2021-12-06 22:17:55,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:55,375 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 917 transitions. [2021-12-06 22:17:55,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (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) [2021-12-06 22:17:55,375 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 917 transitions. [2021-12-06 22:17:55,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-06 22:17:55,377 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:55,377 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:17:55,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 22:17:55,377 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:55,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:55,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1443141306, now seen corresponding path program 1 times [2021-12-06 22:17:55,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:55,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139157341] [2021-12-06 22:17:55,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:55,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:55,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:17:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:55,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:55,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:17:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:55,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:17:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:55,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:55,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 22:17:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:55,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:17:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:55,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:55,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:55,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:55,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:17:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:55,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:17:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:55,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 22:17:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:55,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:55,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 22:17:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:55,514 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:17:55,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:55,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139157341] [2021-12-06 22:17:55,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139157341] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:55,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:55,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:17:55,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814896801] [2021-12-06 22:17:55,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:55,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:17:55,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:55,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:17:55,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:17:55,516 INFO L87 Difference]: Start difference. First operand 584 states and 917 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) [2021-12-06 22:17:58,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:58,240 INFO L93 Difference]: Finished difference Result 1351 states and 2140 transitions. [2021-12-06 22:17:58,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:17:58,240 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 [2021-12-06 22:17:58,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:58,244 INFO L225 Difference]: With dead ends: 1351 [2021-12-06 22:17:58,244 INFO L226 Difference]: Without dead ends: 831 [2021-12-06 22:17:58,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2021-12-06 22:17:58,246 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 1359 mSDsluCounter, 2176 mSDsCounter, 0 mSdLazyCounter, 3999 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1406 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 4446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 3999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:58,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1406 Valid, 3022 Invalid, 4446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 3999 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 22:17:58,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2021-12-06 22:17:58,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 594. [2021-12-06 22:17:58,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 468 states have (on average 1.5598290598290598) internal successors, (730), 483 states have internal predecessors, (730), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2021-12-06 22:17:58,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 927 transitions. [2021-12-06 22:17:58,294 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 927 transitions. Word has length 114 [2021-12-06 22:17:58,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:58,295 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 927 transitions. [2021-12-06 22:17:58,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (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) [2021-12-06 22:17:58,295 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 927 transitions. [2021-12-06 22:17:58,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-06 22:17:58,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:58,297 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:17:58,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 22:17:58,297 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:58,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:58,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1429498275, now seen corresponding path program 1 times [2021-12-06 22:17:58,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:58,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186733130] [2021-12-06 22:17:58,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:58,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:58,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:17:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:58,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:58,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:17:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:58,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 22:17:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:58,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:58,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 22:17:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:58,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 22:17:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:58,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:58,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:58,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:17:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:58,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:17:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:58,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:17:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:58,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:58,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:17:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:58,400 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:17:58,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:58,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186733130] [2021-12-06 22:17:58,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186733130] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:58,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:58,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:17:58,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552418410] [2021-12-06 22:17:58,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:58,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:17:58,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:58,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:17:58,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:17:58,402 INFO L87 Difference]: Start difference. First operand 594 states and 927 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:18:00,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:18:00,632 INFO L93 Difference]: Finished difference Result 1347 states and 2128 transitions. [2021-12-06 22:18:00,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:18:00,632 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 [2021-12-06 22:18:00,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:18:00,636 INFO L225 Difference]: With dead ends: 1347 [2021-12-06 22:18:00,636 INFO L226 Difference]: Without dead ends: 801 [2021-12-06 22:18:00,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:18:00,638 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 1393 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 1836 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 2298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 1836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:18:00,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1440 Valid, 1768 Invalid, 2298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 1836 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 22:18:00,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2021-12-06 22:18:00,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 594. [2021-12-06 22:18:00,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 468 states have (on average 1.5512820512820513) internal successors, (726), 483 states have internal predecessors, (726), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (98), 96 states have call predecessors, (98), 98 states have call successors, (98) [2021-12-06 22:18:00,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 923 transitions. [2021-12-06 22:18:00,693 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 923 transitions. Word has length 115 [2021-12-06 22:18:00,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:18:00,693 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 923 transitions. [2021-12-06 22:18:00,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (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) [2021-12-06 22:18:00,694 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 923 transitions. [2021-12-06 22:18:00,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-06 22:18:00,695 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:18:00,695 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:18:00,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 22:18:00,696 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:18:00,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:18:00,696 INFO L85 PathProgramCache]: Analyzing trace with hash -906894235, now seen corresponding path program 1 times [2021-12-06 22:18:00,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:18:00,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764830580] [2021-12-06 22:18:00,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:00,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:18:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:18:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:18:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 22:18:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 22:18:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 22:18:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:18:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:18:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:18:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:18:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,815 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 22:18:00,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:18:00,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764830580] [2021-12-06 22:18:00,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764830580] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:18:00,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194666185] [2021-12-06 22:18:00,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:00,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:18:00,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:18:00,817 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:18:00,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:18:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:18:00,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:18:01,113 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 22:18:01,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:18:01,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194666185] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:18:01,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:18:01,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2021-12-06 22:18:01,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351704049] [2021-12-06 22:18:01,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:18:01,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:18:01,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:18:01,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:18:01,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:18:01,116 INFO L87 Difference]: Start difference. First operand 594 states and 923 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 22:18:01,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:18:01,458 INFO L93 Difference]: Finished difference Result 1120 states and 1795 transitions. [2021-12-06 22:18:01,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:18:01,459 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 [2021-12-06 22:18:01,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:18:01,461 INFO L225 Difference]: With dead ends: 1120 [2021-12-06 22:18:01,462 INFO L226 Difference]: Without dead ends: 602 [2021-12-06 22:18:01,464 INFO L932 BasicCegarLoop]: 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 [2021-12-06 22:18:01,465 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 830 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:18:01,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [848 Valid, 2146 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:18:01,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-12-06 22:18:01,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2021-12-06 22:18:01,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 475 states have (on average 1.5536842105263158) internal successors, (738), 490 states have internal predecessors, (738), 99 states have call successors, (99), 28 states have call predecessors, (99), 27 states have return successors, (99), 96 states have call predecessors, (99), 98 states have call successors, (99) [2021-12-06 22:18:01,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 936 transitions. [2021-12-06 22:18:01,523 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 936 transitions. Word has length 115 [2021-12-06 22:18:01,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:18:01,524 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 936 transitions. [2021-12-06 22:18:01,524 INFO L471 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) [2021-12-06 22:18:01,524 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 936 transitions. [2021-12-06 22:18:01,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 22:18:01,526 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:18:01,526 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:18:01,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:18:01,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 22:18:01,727 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:18:01,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:18:01,728 INFO L85 PathProgramCache]: Analyzing trace with hash 766219231, now seen corresponding path program 1 times [2021-12-06 22:18:01,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:18:01,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681798563] [2021-12-06 22:18:01,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:01,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:18:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:01,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:18:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:01,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:01,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:18:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:01,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 22:18:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:01,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:01,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 22:18:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:01,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 22:18:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:01,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:01,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:01,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:18:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:01,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 22:18:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:01,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 22:18:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:01,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:01,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 22:18:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-06 22:18:01,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:18:01,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681798563] [2021-12-06 22:18:01,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681798563] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:18:01,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179714454] [2021-12-06 22:18:01,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:01,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:18:01,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:18:01,890 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:18:01,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 22:18:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:02,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:18:02,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:18:02,134 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-06 22:18:02,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:18:02,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179714454] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:18:02,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:18:02,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2021-12-06 22:18:02,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879054354] [2021-12-06 22:18:02,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:18:02,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:18:02,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:18:02,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:18:02,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:18:02,135 INFO L87 Difference]: Start difference. First operand 602 states and 936 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 22:18:02,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:18:02,404 INFO L93 Difference]: Finished difference Result 1136 states and 1818 transitions. [2021-12-06 22:18:02,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:18:02,404 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 [2021-12-06 22:18:02,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:18:02,407 INFO L225 Difference]: With dead ends: 1136 [2021-12-06 22:18:02,408 INFO L226 Difference]: Without dead ends: 610 [2021-12-06 22:18:02,410 INFO L932 BasicCegarLoop]: 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 [2021-12-06 22:18:02,411 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 828 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:18:02,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [846 Valid, 2146 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:18:02,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-12-06 22:18:02,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2021-12-06 22:18:02,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 482 states have (on average 1.5560165975103735) internal successors, (750), 497 states have internal predecessors, (750), 99 states have call successors, (99), 29 states have call predecessors, (99), 28 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2021-12-06 22:18:02,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 949 transitions. [2021-12-06 22:18:02,457 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 949 transitions. Word has length 118 [2021-12-06 22:18:02,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:18:02,458 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 949 transitions. [2021-12-06 22:18:02,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (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) [2021-12-06 22:18:02,458 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 949 transitions. [2021-12-06 22:18:02,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-06 22:18:02,460 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:18:02,460 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:18:02,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-06 22:18:02,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:18:02,661 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:18:02,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:18:02,663 INFO L85 PathProgramCache]: Analyzing trace with hash -35541343, now seen corresponding path program 1 times [2021-12-06 22:18:02,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:18:02,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956592115] [2021-12-06 22:18:02,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:02,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:18:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:02,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:18:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:02,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:02,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:18:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:02,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 22:18:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:02,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:02,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:18:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:02,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:18:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:02,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:02,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:02,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:18:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:02,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:18:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:02,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 22:18:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:02,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:02,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:18:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:02,799 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 22:18:02,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:18:02,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956592115] [2021-12-06 22:18:02,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956592115] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:18:02,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544995484] [2021-12-06 22:18:02,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:02,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:18:02,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:18:02,801 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:18:02,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 22:18:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:02,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:18:02,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:18:03,044 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 22:18:03,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:18:03,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544995484] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:18:03,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:18:03,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2021-12-06 22:18:03,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763765560] [2021-12-06 22:18:03,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:18:03,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:18:03,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:18:03,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:18:03,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:18:03,045 INFO L87 Difference]: Start difference. First operand 610 states and 949 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 22:18:03,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:18:03,361 INFO L93 Difference]: Finished difference Result 1152 states and 1841 transitions. [2021-12-06 22:18:03,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:18:03,362 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 [2021-12-06 22:18:03,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:18:03,366 INFO L225 Difference]: With dead ends: 1152 [2021-12-06 22:18:03,366 INFO L226 Difference]: Without dead ends: 618 [2021-12-06 22:18:03,368 INFO L932 BasicCegarLoop]: 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 [2021-12-06 22:18:03,369 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 826 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:18:03,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [844 Valid, 2146 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:18:03,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-12-06 22:18:03,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2021-12-06 22:18:03,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 489 states have (on average 1.5582822085889572) internal successors, (762), 504 states have internal predecessors, (762), 99 states have call successors, (99), 30 states have call predecessors, (99), 29 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2021-12-06 22:18:03,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 962 transitions. [2021-12-06 22:18:03,428 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 962 transitions. Word has length 121 [2021-12-06 22:18:03,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:18:03,428 INFO L470 AbstractCegarLoop]: Abstraction has 618 states and 962 transitions. [2021-12-06 22:18:03,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (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) [2021-12-06 22:18:03,429 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 962 transitions. [2021-12-06 22:18:03,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-06 22:18:03,430 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:18:03,431 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:18:03,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 22:18:03,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:18:03,632 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:18:03,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:18:03,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1250286445, now seen corresponding path program 1 times [2021-12-06 22:18:03,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:18:03,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802260917] [2021-12-06 22:18:03,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:03,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:18:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:03,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:18:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:03,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:03,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:18:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:03,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 22:18:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:03,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:03,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 22:18:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:03,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 22:18:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:03,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:03,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:03,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:18:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:03,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:18:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:03,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:18:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:03,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:03,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 22:18:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:03,760 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-06 22:18:03,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:18:03,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802260917] [2021-12-06 22:18:03,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802260917] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:18:03,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24220999] [2021-12-06 22:18:03,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:03,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:18:03,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:18:03,761 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:18:03,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 22:18:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:03,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 1225 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:18:03,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:18:04,024 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-06 22:18:04,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:18:04,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24220999] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:18:04,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:18:04,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2021-12-06 22:18:04,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574396546] [2021-12-06 22:18:04,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:18:04,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:18:04,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:18:04,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:18:04,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:18:04,026 INFO L87 Difference]: Start difference. First operand 618 states and 962 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 22:18:04,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:18:04,319 INFO L93 Difference]: Finished difference Result 1168 states and 1864 transitions. [2021-12-06 22:18:04,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:18:04,320 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 [2021-12-06 22:18:04,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:18:04,323 INFO L225 Difference]: With dead ends: 1168 [2021-12-06 22:18:04,323 INFO L226 Difference]: Without dead ends: 626 [2021-12-06 22:18:04,325 INFO L932 BasicCegarLoop]: 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 [2021-12-06 22:18:04,326 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 824 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:18:04,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 2146 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:18:04,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-12-06 22:18:04,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2021-12-06 22:18:04,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 496 states have (on average 1.560483870967742) internal successors, (774), 511 states have internal predecessors, (774), 99 states have call successors, (99), 31 states have call predecessors, (99), 30 states have return successors, (102), 96 states have call predecessors, (102), 98 states have call successors, (102) [2021-12-06 22:18:04,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 975 transitions. [2021-12-06 22:18:04,378 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 975 transitions. Word has length 124 [2021-12-06 22:18:04,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:18:04,378 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 975 transitions. [2021-12-06 22:18:04,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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) [2021-12-06 22:18:04,379 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 975 transitions. [2021-12-06 22:18:04,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 22:18:04,380 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:18:04,380 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:18:04,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 22:18:04,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:18:04,582 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:18:04,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:18:04,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1296975139, now seen corresponding path program 1 times [2021-12-06 22:18:04,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:18:04,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847138886] [2021-12-06 22:18:04,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:04,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:18:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:04,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:18:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:04,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:04,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:18:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:04,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 22:18:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:04,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:04,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:18:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:04,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 22:18:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:04,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:04,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:04,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:18:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:04,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:18:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:04,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:18:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:04,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:04,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 22:18:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:04,753 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 22:18:04,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:18:04,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847138886] [2021-12-06 22:18:04,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847138886] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:18:04,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165770649] [2021-12-06 22:18:04,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:04,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:18:04,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:18:04,755 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:18:04,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 22:18:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:04,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 1228 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 22:18:04,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:18:05,037 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 22:18:05,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:18:05,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165770649] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:18:05,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:18:05,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-06 22:18:05,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952854930] [2021-12-06 22:18:05,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:18:05,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:18:05,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:18:05,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:18:05,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:18:05,039 INFO L87 Difference]: Start difference. First operand 626 states and 975 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 22:18:05,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:18:05,335 INFO L93 Difference]: Finished difference Result 1732 states and 2791 transitions. [2021-12-06 22:18:05,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:18:05,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2021-12-06 22:18:05,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:18:05,341 INFO L225 Difference]: With dead ends: 1732 [2021-12-06 22:18:05,341 INFO L226 Difference]: Without dead ends: 1182 [2021-12-06 22:18:05,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-12-06 22:18:05,344 INFO L933 BasicCegarLoop]: 1026 mSDtfsCounter, 800 mSDsluCounter, 2649 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 3675 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:18:05,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [800 Valid, 3675 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:18:05,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2021-12-06 22:18:05,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1174. [2021-12-06 22:18:05,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 922 states have (on average 1.5845986984815619) internal successors, (1461), 953 states have internal predecessors, (1461), 192 states have call successors, (192), 59 states have call predecessors, (192), 59 states have return successors, (218), 187 states have call predecessors, (218), 190 states have call successors, (218) [2021-12-06 22:18:05,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1871 transitions. [2021-12-06 22:18:05,443 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1871 transitions. Word has length 127 [2021-12-06 22:18:05,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:18:05,444 INFO L470 AbstractCegarLoop]: Abstraction has 1174 states and 1871 transitions. [2021-12-06 22:18:05,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 22:18:05,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1871 transitions. [2021-12-06 22:18:05,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-06 22:18:05,446 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:18:05,446 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:18:05,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-06 22:18:05,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-06 22:18:05,648 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:18:05,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:18:05,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1015738056, now seen corresponding path program 1 times [2021-12-06 22:18:05,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:18:05,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972011821] [2021-12-06 22:18:05,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:05,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:18:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:05,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:18:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:05,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:05,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:18:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:05,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 22:18:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:05,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:05,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:18:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:05,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 22:18:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:05,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:05,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:05,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:18:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:05,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:18:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:05,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:18:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:05,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:18:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:05,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:05,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:18:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 22:18:05,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:18:05,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972011821] [2021-12-06 22:18:05,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972011821] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:18:05,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805673720] [2021-12-06 22:18:05,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:05,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:18:05,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:18:05,847 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:18:05,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 22:18:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:05,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 1245 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:18:05,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:18:06,067 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 22:18:06,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:18:06,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805673720] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:18:06,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:18:06,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2021-12-06 22:18:06,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109172521] [2021-12-06 22:18:06,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:18:06,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:18:06,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:18:06,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:18:06,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:18:06,068 INFO L87 Difference]: Start difference. First operand 1174 states and 1871 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 22:18:06,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:18:06,218 INFO L93 Difference]: Finished difference Result 2813 states and 4568 transitions. [2021-12-06 22:18:06,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:18:06,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2021-12-06 22:18:06,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:18:06,227 INFO L225 Difference]: With dead ends: 2813 [2021-12-06 22:18:06,227 INFO L226 Difference]: Without dead ends: 1716 [2021-12-06 22:18:06,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:18:06,231 INFO L933 BasicCegarLoop]: 1654 mSDtfsCounter, 816 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:18:06,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 2521 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:18:06,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2021-12-06 22:18:06,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1174. [2021-12-06 22:18:06,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 922 states have (on average 1.5835140997830803) internal successors, (1460), 953 states have internal predecessors, (1460), 192 states have call successors, (192), 59 states have call predecessors, (192), 59 states have return successors, (218), 187 states have call predecessors, (218), 190 states have call successors, (218) [2021-12-06 22:18:06,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1870 transitions. [2021-12-06 22:18:06,332 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1870 transitions. Word has length 132 [2021-12-06 22:18:06,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:18:06,332 INFO L470 AbstractCegarLoop]: Abstraction has 1174 states and 1870 transitions. [2021-12-06 22:18:06,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 22:18:06,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1870 transitions. [2021-12-06 22:18:06,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-06 22:18:06,334 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:18:06,334 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:18:06,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 22:18:06,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-06 22:18:06,536 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:18:06,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:18:06,537 INFO L85 PathProgramCache]: Analyzing trace with hash -314138182, now seen corresponding path program 1 times [2021-12-06 22:18:06,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:18:06,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978346265] [2021-12-06 22:18:06,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:06,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:18:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:06,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:18:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:06,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:06,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:18:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:06,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 22:18:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:06,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:06,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:18:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:06,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 22:18:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:06,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:06,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:06,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:18:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:06,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:18:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:06,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:18:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:06,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:18:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:06,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:06,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:18:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:06,739 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 22:18:06,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:18:06,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978346265] [2021-12-06 22:18:06,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978346265] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:18:06,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328087163] [2021-12-06 22:18:06,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:06,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:18:06,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:18:06,741 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:18:06,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 22:18:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:06,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 1244 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 22:18:06,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:18:06,977 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 22:18:06,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:18:06,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328087163] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:18:06,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:18:06,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-06 22:18:06,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780342613] [2021-12-06 22:18:06,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:18:06,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:18:06,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:18:06,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:18:06,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:18:06,978 INFO L87 Difference]: Start difference. First operand 1174 states and 1870 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 22:18:07,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:18:07,147 INFO L93 Difference]: Finished difference Result 2932 states and 4755 transitions. [2021-12-06 22:18:07,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:18:07,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2021-12-06 22:18:07,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:18:07,157 INFO L225 Difference]: With dead ends: 2932 [2021-12-06 22:18:07,157 INFO L226 Difference]: Without dead ends: 1836 [2021-12-06 22:18:07,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:18:07,162 INFO L933 BasicCegarLoop]: 1018 mSDtfsCounter, 393 mSDsluCounter, 2911 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 3929 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:18:07,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 3929 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:18:07,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2021-12-06 22:18:07,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1824. [2021-12-06 22:18:07,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1824 states, 1436 states have (on average 1.5605849582172702) internal successors, (2241), 1471 states have internal predecessors, (2241), 288 states have call successors, (288), 99 states have call predecessors, (288), 99 states have return successors, (365), 279 states have call predecessors, (365), 284 states have call successors, (365) [2021-12-06 22:18:07,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 2894 transitions. [2021-12-06 22:18:07,319 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 2894 transitions. Word has length 132 [2021-12-06 22:18:07,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:18:07,319 INFO L470 AbstractCegarLoop]: Abstraction has 1824 states and 2894 transitions. [2021-12-06 22:18:07,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 22:18:07,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 2894 transitions. [2021-12-06 22:18:07,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-06 22:18:07,322 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:18:07,322 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:18:07,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 22:18:07,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-06 22:18:07,524 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:18:07,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:18:07,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1530291908, now seen corresponding path program 1 times [2021-12-06 22:18:07,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:18:07,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654745719] [2021-12-06 22:18:07,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:07,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:18:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:07,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:18:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:07,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:07,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:18:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:07,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 22:18:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:07,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:07,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:18:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:07,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 22:18:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:07,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:07,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:07,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:18:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:07,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:18:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:07,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:18:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:07,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:18:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:07,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:07,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:18:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 22:18:07,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:18:07,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654745719] [2021-12-06 22:18:07,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654745719] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:18:07,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431704397] [2021-12-06 22:18:07,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:07,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:18:07,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:18:07,732 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:18:07,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 22:18:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:07,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 1241 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 22:18:07,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:18:07,970 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 22:18:07,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:18:07,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431704397] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:18:07,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:18:07,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 13 [2021-12-06 22:18:07,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898702010] [2021-12-06 22:18:07,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:18:07,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:18:07,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:18:07,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:18:07,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:18:07,971 INFO L87 Difference]: Start difference. First operand 1824 states and 2894 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 22:18:08,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:18:08,108 INFO L93 Difference]: Finished difference Result 3289 states and 5214 transitions. [2021-12-06 22:18:08,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:18:08,109 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 [2021-12-06 22:18:08,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:18:08,116 INFO L225 Difference]: With dead ends: 3289 [2021-12-06 22:18:08,116 INFO L226 Difference]: Without dead ends: 1543 [2021-12-06 22:18:08,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:18:08,121 INFO L933 BasicCegarLoop]: 973 mSDtfsCounter, 567 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:18:08,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 1403 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:18:08,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2021-12-06 22:18:08,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1543. [2021-12-06 22:18:08,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1214 states have (on average 1.5370675453047775) internal successors, (1866), 1241 states have internal predecessors, (1866), 241 states have call successors, (241), 89 states have call predecessors, (241), 87 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2021-12-06 22:18:08,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2403 transitions. [2021-12-06 22:18:08,244 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2403 transitions. Word has length 132 [2021-12-06 22:18:08,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:18:08,245 INFO L470 AbstractCegarLoop]: Abstraction has 1543 states and 2403 transitions. [2021-12-06 22:18:08,245 INFO L471 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) [2021-12-06 22:18:08,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2403 transitions. [2021-12-06 22:18:08,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-06 22:18:08,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:18:08,248 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:18:08,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-06 22:18:08,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-06 22:18:08,450 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:18:08,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:18:08,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1361697994, now seen corresponding path program 1 times [2021-12-06 22:18:08,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:18:08,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987857964] [2021-12-06 22:18:08,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:08,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:18:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:08,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:18:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:08,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:08,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:18:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:08,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 22:18:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:08,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:08,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:18:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:08,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:18:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:08,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:18:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:08,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:18:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:08,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:18:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:08,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 22:18:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:08,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 22:18:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:08,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:18:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:08,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 22:18:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:08,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:08,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 22:18:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:08,632 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-12-06 22:18:08,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:18:08,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987857964] [2021-12-06 22:18:08,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987857964] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:18:08,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617610831] [2021-12-06 22:18:08,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:08,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:18:08,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:18:08,634 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:18:08,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 22:18:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:08,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:18:08,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:18:08,865 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-06 22:18:08,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:18:08,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617610831] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:18:08,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:18:08,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2021-12-06 22:18:08,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115446575] [2021-12-06 22:18:08,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:18:08,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:18:08,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:18:08,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:18:08,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:18:08,867 INFO L87 Difference]: Start difference. First operand 1543 states and 2403 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:18:09,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:18:09,067 INFO L93 Difference]: Finished difference Result 3086 states and 4878 transitions. [2021-12-06 22:18:09,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:18:09,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 155 [2021-12-06 22:18:09,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:18:09,075 INFO L225 Difference]: With dead ends: 3086 [2021-12-06 22:18:09,076 INFO L226 Difference]: Without dead ends: 1621 [2021-12-06 22:18:09,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:18:09,081 INFO L933 BasicCegarLoop]: 801 mSDtfsCounter, 213 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:18:09,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 2379 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:18:09,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2021-12-06 22:18:09,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1621. [2021-12-06 22:18:09,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1621 states, 1290 states have (on average 1.5596899224806202) internal successors, (2012), 1317 states have internal predecessors, (2012), 241 states have call successors, (241), 91 states have call predecessors, (241), 89 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2021-12-06 22:18:09,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 2549 transitions. [2021-12-06 22:18:09,205 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 2549 transitions. Word has length 155 [2021-12-06 22:18:09,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:18:09,205 INFO L470 AbstractCegarLoop]: Abstraction has 1621 states and 2549 transitions. [2021-12-06 22:18:09,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:18:09,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 2549 transitions. [2021-12-06 22:18:09,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-06 22:18:09,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:18:09,209 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:18:09,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 22:18:09,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-06 22:18:09,409 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:18:09,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:18:09,409 INFO L85 PathProgramCache]: Analyzing trace with hash -394765468, now seen corresponding path program 1 times [2021-12-06 22:18:09,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:18:09,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388117486] [2021-12-06 22:18:09,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:09,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:18:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:09,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:18:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:09,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:09,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:18:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:09,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 22:18:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:09,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:09,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:18:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:09,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:18:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:09,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:18:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:09,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:18:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:09,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:18:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:09,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:18:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:09,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 22:18:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:09,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 22:18:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:09,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 22:18:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:09,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:09,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 22:18:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:09,590 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-06 22:18:09,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:18:09,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388117486] [2021-12-06 22:18:09,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388117486] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:18:09,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665107688] [2021-12-06 22:18:09,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:09,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:18:09,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:18:09,592 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:18:09,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 22:18:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:09,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:18:09,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:18:09,853 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-06 22:18:09,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:18:09,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665107688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:18:09,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:18:09,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2021-12-06 22:18:09,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888085970] [2021-12-06 22:18:09,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:18:09,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:18:09,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:18:09,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:18:09,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:18:09,855 INFO L87 Difference]: Start difference. First operand 1621 states and 2549 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:18:10,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:18:10,068 INFO L93 Difference]: Finished difference Result 3242 states and 5168 transitions. [2021-12-06 22:18:10,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:18:10,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 160 [2021-12-06 22:18:10,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:18:10,076 INFO L225 Difference]: With dead ends: 3242 [2021-12-06 22:18:10,076 INFO L226 Difference]: Without dead ends: 1699 [2021-12-06 22:18:10,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:18:10,080 INFO L933 BasicCegarLoop]: 801 mSDtfsCounter, 211 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:18:10,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 2379 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:18:10,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2021-12-06 22:18:10,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1699. [2021-12-06 22:18:10,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1366 states have (on average 1.5797950219619326) internal successors, (2158), 1393 states have internal predecessors, (2158), 241 states have call successors, (241), 93 states have call predecessors, (241), 91 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2021-12-06 22:18:10,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2695 transitions. [2021-12-06 22:18:10,204 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2695 transitions. Word has length 160 [2021-12-06 22:18:10,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:18:10,205 INFO L470 AbstractCegarLoop]: Abstraction has 1699 states and 2695 transitions. [2021-12-06 22:18:10,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:18:10,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2695 transitions. [2021-12-06 22:18:10,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-06 22:18:10,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:18:10,208 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:18:10,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-06 22:18:10,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-06 22:18:10,409 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:18:10,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:18:10,410 INFO L85 PathProgramCache]: Analyzing trace with hash 718699668, now seen corresponding path program 1 times [2021-12-06 22:18:10,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:18:10,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562928235] [2021-12-06 22:18:10,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:10,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:18:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:10,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:18:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:10,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:10,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:18:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:10,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 22:18:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:10,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:10,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:18:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:10,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:18:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:10,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:18:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:10,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:18:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:10,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:18:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:10,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 22:18:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:10,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:18:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:10,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 22:18:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:10,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 22:18:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:10,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:10,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-06 22:18:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:10,613 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-06 22:18:10,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:18:10,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562928235] [2021-12-06 22:18:10,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562928235] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:18:10,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169324223] [2021-12-06 22:18:10,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:10,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:18:10,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:18:10,614 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:18:10,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 22:18:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:10,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 1345 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:18:10,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:18:10,864 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 22:18:10,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:18:10,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169324223] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:18:10,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:18:10,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2021-12-06 22:18:10,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713503033] [2021-12-06 22:18:10,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:18:10,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:18:10,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:18:10,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:18:10,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:18:10,865 INFO L87 Difference]: Start difference. First operand 1699 states and 2695 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:18:11,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:18:11,054 INFO L93 Difference]: Finished difference Result 3398 states and 5458 transitions. [2021-12-06 22:18:11,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:18:11,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 164 [2021-12-06 22:18:11,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:18:11,063 INFO L225 Difference]: With dead ends: 3398 [2021-12-06 22:18:11,063 INFO L226 Difference]: Without dead ends: 1777 [2021-12-06 22:18:11,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:18:11,069 INFO L933 BasicCegarLoop]: 801 mSDtfsCounter, 209 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:18:11,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 2379 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:18:11,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1777 states. [2021-12-06 22:18:11,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1777 to 1777. [2021-12-06 22:18:11,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1442 states have (on average 1.5977808599167822) internal successors, (2304), 1469 states have internal predecessors, (2304), 241 states have call successors, (241), 95 states have call predecessors, (241), 93 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2021-12-06 22:18:11,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2841 transitions. [2021-12-06 22:18:11,202 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2841 transitions. Word has length 164 [2021-12-06 22:18:11,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:18:11,202 INFO L470 AbstractCegarLoop]: Abstraction has 1777 states and 2841 transitions. [2021-12-06 22:18:11,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:18:11,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2841 transitions. [2021-12-06 22:18:11,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-06 22:18:11,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:18:11,205 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:18:11,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 22:18:11,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-06 22:18:11,407 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:18:11,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:18:11,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1639074902, now seen corresponding path program 1 times [2021-12-06 22:18:11,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:18:11,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979526513] [2021-12-06 22:18:11,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:11,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:18:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:11,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:18:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:11,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:11,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:18:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:11,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 22:18:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:11,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:11,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:18:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:11,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:18:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:11,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:18:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:11,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:18:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:11,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:18:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:11,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 22:18:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:11,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 22:18:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:11,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 22:18:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:11,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 22:18:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:11,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:11,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 22:18:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:11,604 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-06 22:18:11,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:18:11,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979526513] [2021-12-06 22:18:11,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979526513] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:18:11,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19775635] [2021-12-06 22:18:11,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:11,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:18:11,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:18:11,606 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:18:11,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 22:18:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:11,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:18:11,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:18:11,846 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 22:18:11,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:18:11,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19775635] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:18:11,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:18:11,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2021-12-06 22:18:11,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419154208] [2021-12-06 22:18:11,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:18:11,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:18:11,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:18:11,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:18:11,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:18:11,848 INFO L87 Difference]: Start difference. First operand 1777 states and 2841 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:18:12,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:18:12,052 INFO L93 Difference]: Finished difference Result 3554 states and 5748 transitions. [2021-12-06 22:18:12,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:18:12,053 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 [2021-12-06 22:18:12,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:18:12,059 INFO L225 Difference]: With dead ends: 3554 [2021-12-06 22:18:12,059 INFO L226 Difference]: Without dead ends: 1855 [2021-12-06 22:18:12,063 INFO L932 BasicCegarLoop]: 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 [2021-12-06 22:18:12,064 INFO L933 BasicCegarLoop]: 801 mSDtfsCounter, 207 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:18:12,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 2379 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:18:12,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2021-12-06 22:18:12,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 1855. [2021-12-06 22:18:12,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1518 states have (on average 1.613965744400527) internal successors, (2450), 1545 states have internal predecessors, (2450), 241 states have call successors, (241), 97 states have call predecessors, (241), 95 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2021-12-06 22:18:12,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 2987 transitions. [2021-12-06 22:18:12,195 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 2987 transitions. Word has length 167 [2021-12-06 22:18:12,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:18:12,196 INFO L470 AbstractCegarLoop]: Abstraction has 1855 states and 2987 transitions. [2021-12-06 22:18:12,196 INFO L471 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) [2021-12-06 22:18:12,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 2987 transitions. [2021-12-06 22:18:12,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-06 22:18:12,199 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:18:12,199 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:18:12,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 22:18:12,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-06 22:18:12,400 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:18:12,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:18:12,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1560627322, now seen corresponding path program 1 times [2021-12-06 22:18:12,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:18:12,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110052842] [2021-12-06 22:18:12,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:12,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:18:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:12,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:18:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:12,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:12,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:18:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:12,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 22:18:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:12,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:12,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:18:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:12,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:18:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:12,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:18:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:12,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:18:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:12,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:18:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:12,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 22:18:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:12,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:18:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:12,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 22:18:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:12,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 22:18:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:12,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:12,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 22:18:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-12-06 22:18:12,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:18:12,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110052842] [2021-12-06 22:18:12,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110052842] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:18:12,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743525082] [2021-12-06 22:18:12,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:12,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:18:12,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:18:12,602 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:18:12,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 22:18:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:12,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 1350 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:18:12,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:18:12,843 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-06 22:18:12,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:18:12,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743525082] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:18:12,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:18:12,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2021-12-06 22:18:12,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464821198] [2021-12-06 22:18:12,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:18:12,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:18:12,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:18:12,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:18:12,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:18:12,844 INFO L87 Difference]: Start difference. First operand 1855 states and 2987 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:18:13,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:18:13,041 INFO L93 Difference]: Finished difference Result 3710 states and 6038 transitions. [2021-12-06 22:18:13,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:18:13,042 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 [2021-12-06 22:18:13,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:18:13,048 INFO L225 Difference]: With dead ends: 3710 [2021-12-06 22:18:13,048 INFO L226 Difference]: Without dead ends: 1933 [2021-12-06 22:18:13,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:18:13,052 INFO L933 BasicCegarLoop]: 801 mSDtfsCounter, 205 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:18:13,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 2379 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:18:13,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2021-12-06 22:18:13,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1933. [2021-12-06 22:18:13,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1594 states have (on average 1.6286072772898368) internal successors, (2596), 1621 states have internal predecessors, (2596), 241 states have call successors, (241), 99 states have call predecessors, (241), 97 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2021-12-06 22:18:13,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 3133 transitions. [2021-12-06 22:18:13,175 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 3133 transitions. Word has length 169 [2021-12-06 22:18:13,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:18:13,175 INFO L470 AbstractCegarLoop]: Abstraction has 1933 states and 3133 transitions. [2021-12-06 22:18:13,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:18:13,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 3133 transitions. [2021-12-06 22:18:13,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-06 22:18:13,179 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:18:13,179 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:18:13,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-06 22:18:13,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:18:13,380 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:18:13,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:18:13,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1589598871, now seen corresponding path program 1 times [2021-12-06 22:18:13,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:18:13,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182031011] [2021-12-06 22:18:13,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:13,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:18:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:13,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:18:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:13,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:13,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:18:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:13,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 22:18:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:13,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:13,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:18:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:13,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:18:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:13,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:18:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:13,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:18:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:13,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:18:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:13,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 22:18:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:13,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:18:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:13,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 22:18:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:13,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 22:18:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:13,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:13,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 22:18:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:13,541 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-06 22:18:13,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:18:13,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182031011] [2021-12-06 22:18:13,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182031011] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:18:13,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200595174] [2021-12-06 22:18:13,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:13,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:18:13,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:18:13,542 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:18:13,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 22:18:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:13,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 1347 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 22:18:13,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:18:13,798 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-12-06 22:18:13,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:18:13,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200595174] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:18:13,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:18:13,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2021-12-06 22:18:13,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268005532] [2021-12-06 22:18:13,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:18:13,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:18:13,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:18:13,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:18:13,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:18:13,800 INFO L87 Difference]: Start difference. First operand 1933 states and 3133 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:18:13,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:18:13,957 INFO L93 Difference]: Finished difference Result 3850 states and 6314 transitions. [2021-12-06 22:18:13,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:18:13,957 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 [2021-12-06 22:18:13,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:18:13,964 INFO L225 Difference]: With dead ends: 3850 [2021-12-06 22:18:13,964 INFO L226 Difference]: Without dead ends: 1995 [2021-12-06 22:18:13,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:18:13,969 INFO L933 BasicCegarLoop]: 881 mSDtfsCounter, 69 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:18:13,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 2613 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:18:13,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2021-12-06 22:18:14,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1941. [2021-12-06 22:18:14,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1602 states have (on average 1.6254681647940075) internal successors, (2604), 1629 states have internal predecessors, (2604), 241 states have call successors, (241), 99 states have call predecessors, (241), 97 states have return successors, (296), 236 states have call predecessors, (296), 237 states have call successors, (296) [2021-12-06 22:18:14,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 3141 transitions. [2021-12-06 22:18:14,104 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 3141 transitions. Word has length 169 [2021-12-06 22:18:14,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:18:14,104 INFO L470 AbstractCegarLoop]: Abstraction has 1941 states and 3141 transitions. [2021-12-06 22:18:14,104 INFO L471 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) [2021-12-06 22:18:14,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 3141 transitions. [2021-12-06 22:18:14,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-06 22:18:14,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:18:14,110 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:18:14,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 22:18:14,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:18:14,311 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:18:14,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:18:14,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1011251356, now seen corresponding path program 1 times [2021-12-06 22:18:14,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:18:14,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447949274] [2021-12-06 22:18:14,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:14,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:18:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:14,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:18:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:14,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:14,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:18:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:14,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 22:18:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:14,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:14,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:18:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:14,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:18:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:14,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:18:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:14,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:18:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:14,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 22:18:14,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:14,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:18:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:14,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:18:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:14,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 22:18:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:14,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 22:18:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:14,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 22:18:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:14,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:14,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-06 22:18:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:14,490 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-06 22:18:14,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:18:14,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447949274] [2021-12-06 22:18:14,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447949274] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:18:14,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288452789] [2021-12-06 22:18:14,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:14,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:18:14,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:18:14,491 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:18:14,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 22:18:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:14,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-06 22:18:14,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:18:14,828 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-12-06 22:18:14,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:18:14,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288452789] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:18:14,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:18:14,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2021-12-06 22:18:14,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137899154] [2021-12-06 22:18:14,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:18:14,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:18:14,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:18:14,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:18:14,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-12-06 22:18:14,830 INFO L87 Difference]: Start difference. First operand 1941 states and 3141 transitions. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (17), 4 states have call predecessors, (17), 6 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-06 22:18:16,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:18:16,700 INFO L93 Difference]: Finished difference Result 5972 states and 9878 transitions. [2021-12-06 22:18:16,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:18:16,700 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 [2021-12-06 22:18:16,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:18:16,715 INFO L225 Difference]: With dead ends: 5972 [2021-12-06 22:18:16,715 INFO L226 Difference]: Without dead ends: 3737 [2021-12-06 22:18:16,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2021-12-06 22:18:16,722 INFO L933 BasicCegarLoop]: 788 mSDtfsCounter, 1945 mSDsluCounter, 2036 mSDsCounter, 0 mSdLazyCounter, 4337 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 4855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 4337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:18:16,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2050 Valid, 2824 Invalid, 4855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 4337 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-06 22:18:16,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2021-12-06 22:18:17,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3657. [2021-12-06 22:18:17,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3657 states, 2960 states have (on average 1.6422297297297297) internal successors, (4861), 3040 states have internal predecessors, (4861), 499 states have call successors, (499), 179 states have call predecessors, (499), 197 states have return successors, (641), 495 states have call predecessors, (641), 495 states have call successors, (641) [2021-12-06 22:18:17,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3657 states to 3657 states and 6001 transitions. [2021-12-06 22:18:17,020 INFO L78 Accepts]: Start accepts. Automaton has 3657 states and 6001 transitions. Word has length 177 [2021-12-06 22:18:17,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:18:17,021 INFO L470 AbstractCegarLoop]: Abstraction has 3657 states and 6001 transitions. [2021-12-06 22:18:17,021 INFO L471 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) [2021-12-06 22:18:17,021 INFO L276 IsEmpty]: Start isEmpty. Operand 3657 states and 6001 transitions. [2021-12-06 22:18:17,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-06 22:18:17,032 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:18:17,032 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:18:17,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 22:18:17,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:18:17,232 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:18:17,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:18:17,233 INFO L85 PathProgramCache]: Analyzing trace with hash -359912820, now seen corresponding path program 1 times [2021-12-06 22:18:17,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:18:17,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544370124] [2021-12-06 22:18:17,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:17,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:18:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:17,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:18:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:17,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:17,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:18:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:17,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 22:18:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:17,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:17,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:18:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:17,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:18:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:17,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:18:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:17,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:18:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:17,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 22:18:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:17,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:18:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:17,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:18:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:17,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 22:18:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:17,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 22:18:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:17,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 22:18:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:17,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:17,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-06 22:18:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:17,350 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-12-06 22:18:17,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:18:17,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544370124] [2021-12-06 22:18:17,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544370124] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:18:17,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:18:17,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:18:17,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136987012] [2021-12-06 22:18:17,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:18:17,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:18:17,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:18:17,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:18:17,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:18:17,351 INFO L87 Difference]: Start difference. First operand 3657 states and 6001 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) [2021-12-06 22:18:20,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:18:20,304 INFO L93 Difference]: Finished difference Result 8186 states and 13608 transitions. [2021-12-06 22:18:20,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:18:20,304 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 [2021-12-06 22:18:20,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:18:20,320 INFO L225 Difference]: With dead ends: 8186 [2021-12-06 22:18:20,321 INFO L226 Difference]: Without dead ends: 4543 [2021-12-06 22:18:20,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-12-06 22:18:20,329 INFO L933 BasicCegarLoop]: 845 mSDtfsCounter, 791 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 3186 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 3535 SdHoareTripleChecker+Invalid, 3370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 3186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:18:20,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [903 Valid, 3535 Invalid, 3370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 3186 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-06 22:18:20,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4543 states. [2021-12-06 22:18:20,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4543 to 3671. [2021-12-06 22:18:20,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3671 states, 2974 states have (on average 1.6314727639542703) internal successors, (4852), 3054 states have internal predecessors, (4852), 499 states have call successors, (499), 179 states have call predecessors, (499), 197 states have return successors, (641), 495 states have call predecessors, (641), 495 states have call successors, (641) [2021-12-06 22:18:20,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3671 states to 3671 states and 5992 transitions. [2021-12-06 22:18:20,652 INFO L78 Accepts]: Start accepts. Automaton has 3671 states and 5992 transitions. Word has length 177 [2021-12-06 22:18:20,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:18:20,653 INFO L470 AbstractCegarLoop]: Abstraction has 3671 states and 5992 transitions. [2021-12-06 22:18:20,653 INFO L471 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) [2021-12-06 22:18:20,653 INFO L276 IsEmpty]: Start isEmpty. Operand 3671 states and 5992 transitions. [2021-12-06 22:18:20,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-06 22:18:20,662 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:18:20,662 INFO L514 BasicCegarLoop]: 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] [2021-12-06 22:18:20,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-06 22:18:20,662 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:18:20,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:18:20,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1639945016, now seen corresponding path program 1 times [2021-12-06 22:18:20,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:18:20,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157469921] [2021-12-06 22:18:20,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:20,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:18:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:20,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:18:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:20,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:20,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:18:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:20,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 22:18:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:20,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:20,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 22:18:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:20,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:18:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:20,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 22:18:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:20,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 22:18:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:20,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 22:18:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:20,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:18:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:20,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 22:18:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:20,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 22:18:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:20,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 22:18:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:20,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 22:18:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:20,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:20,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 22:18:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:20,782 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-12-06 22:18:20,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:18:20,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157469921] [2021-12-06 22:18:20,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157469921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:18:20,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:18:20,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:18:20,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832878773] [2021-12-06 22:18:20,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:18:20,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:18:20,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:18:20,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:18:20,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:18:20,783 INFO L87 Difference]: Start difference. First operand 3671 states and 5992 transitions. Second operand has 9 states, 8 states have (on average 14.5) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 22:18:23,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:18:23,710 INFO L93 Difference]: Finished difference Result 7846 states and 13112 transitions. [2021-12-06 22:18:23,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:18:23,711 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 [2021-12-06 22:18:23,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:18:23,724 INFO L225 Difference]: With dead ends: 7846 [2021-12-06 22:18:23,724 INFO L226 Difference]: Without dead ends: 4112 [2021-12-06 22:18:23,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-12-06 22:18:23,732 INFO L933 BasicCegarLoop]: 903 mSDtfsCounter, 799 mSDsluCounter, 2956 mSDsCounter, 0 mSdLazyCounter, 3159 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 3859 SdHoareTripleChecker+Invalid, 3313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 3159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:18:23,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [911 Valid, 3859 Invalid, 3313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 3159 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-06 22:18:23,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4112 states. [2021-12-06 22:18:23,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4112 to 3311. [2021-12-06 22:18:23,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3311 states, 2714 states have (on average 1.6680176860722182) internal successors, (4527), 2781 states have internal predecessors, (4527), 419 states have call successors, (419), 167 states have call predecessors, (419), 177 states have return successors, (511), 410 states have call predecessors, (511), 415 states have call successors, (511) [2021-12-06 22:18:23,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3311 states to 3311 states and 5457 transitions. [2021-12-06 22:18:23,998 INFO L78 Accepts]: Start accepts. Automaton has 3311 states and 5457 transitions. Word has length 183 [2021-12-06 22:18:23,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:18:23,998 INFO L470 AbstractCegarLoop]: Abstraction has 3311 states and 5457 transitions. [2021-12-06 22:18:23,998 INFO L471 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) [2021-12-06 22:18:23,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3311 states and 5457 transitions. [2021-12-06 22:18:24,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2021-12-06 22:18:24,007 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:18:24,007 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:18:24,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-06 22:18:24,008 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:18:24,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:18:24,008 INFO L85 PathProgramCache]: Analyzing trace with hash 58685341, now seen corresponding path program 1 times [2021-12-06 22:18:24,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:18:24,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827594681] [2021-12-06 22:18:24,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:24,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:18:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:18:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:18:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:18:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:18:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:18:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:18:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 22:18:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:18:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 22:18:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 22:18:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:18:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:18:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:18:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 22:18:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:18:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 22:18:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-12-06 22:18:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:18:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:18:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:18:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:18:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:18:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:18:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:18:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-12-06 22:18:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:18:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2021-12-06 22:18:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2021-12-06 22:18:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:18:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2021-12-06 22:18:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2021-12-06 22:18:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2021-12-06 22:18:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2021-12-06 22:18:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2021-12-06 22:18:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2021-12-06 22:18:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2021-12-06 22:18:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2021-12-06 22:18:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2021-12-06 22:18:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1099 backedges. 37 proven. 136 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2021-12-06 22:18:24,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:18:24,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827594681] [2021-12-06 22:18:24,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827594681] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:18:24,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771368450] [2021-12-06 22:18:24,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:24,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:18:24,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:18:24,445 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:18:24,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 22:18:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:24,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 3234 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 22:18:24,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:18:25,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1099 backedges. 371 proven. 50 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2021-12-06 22:18:25,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:18:25,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1099 backedges. 53 proven. 101 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2021-12-06 22:18:25,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771368450] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:18:25,937 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:18:25,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 14] total 34 [2021-12-06 22:18:25,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438880237] [2021-12-06 22:18:25,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:18:25,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-06 22:18:25,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:18:25,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-06 22:18:25,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 22:18:25,940 INFO L87 Difference]: Start difference. First operand 3311 states and 5457 transitions. Second operand has 34 states, 32 states have (on average 12.03125) internal successors, (385), 25 states have internal predecessors, (385), 17 states have call successors, (92), 11 states have call predecessors, (92), 14 states have return successors, (91), 22 states have call predecessors, (91), 17 states have call successors, (91) [2021-12-06 22:21:20,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:20,740 INFO L93 Difference]: Finished difference Result 37707 states and 79028 transitions. [2021-12-06 22:21:20,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 640 states. [2021-12-06 22:21:20,741 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 12.03125) internal successors, (385), 25 states have internal predecessors, (385), 17 states have call successors, (92), 11 states have call predecessors, (92), 14 states have return successors, (91), 22 states have call predecessors, (91), 17 states have call successors, (91) Word has length 473 [2021-12-06 22:21:20,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:20,959 INFO L225 Difference]: With dead ends: 37707 [2021-12-06 22:21:20,959 INFO L226 Difference]: Without dead ends: 34390 [2021-12-06 22:21:21,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2034 GetRequests, 1364 SyntacticMatches, 2 SemanticMatches, 668 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211792 ImplicationChecksByTransitivity, 48.3s TimeCoverageRelationStatistics Valid=30812, Invalid=417418, Unknown=0, NotChecked=0, Total=448230 [2021-12-06 22:21:21,062 INFO L933 BasicCegarLoop]: 5786 mSDtfsCounter, 43932 mSDsluCounter, 35307 mSDsCounter, 0 mSdLazyCounter, 222982 mSolverCounterSat, 49750 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43932 SdHoareTripleChecker+Valid, 41093 SdHoareTripleChecker+Invalid, 272732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.0s SdHoareTripleChecker+Time, 49750 IncrementalHoareTripleChecker+Valid, 222982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 115.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:21,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43932 Valid, 41093 Invalid, 272732 Unknown, 0 Unchecked, 1.0s Time], IncrementalHoareTripleChecker [49750 Valid, 222982 Invalid, 0 Unknown, 0 Unchecked, 115.9s Time] [2021-12-06 22:21:21,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34390 states. [2021-12-06 22:21:24,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34390 to 17341. [2021-12-06 22:21:24,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17341 states, 14179 states have (on average 1.6456026518090134) internal successors, (23333), 14530 states have internal predecessors, (23333), 2097 states have call successors, (2097), 936 states have call predecessors, (2097), 1064 states have return successors, (2963), 2138 states have call predecessors, (2963), 2079 states have call successors, (2963) [2021-12-06 22:21:24,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17341 states to 17341 states and 28393 transitions. [2021-12-06 22:21:24,223 INFO L78 Accepts]: Start accepts. Automaton has 17341 states and 28393 transitions. Word has length 473 [2021-12-06 22:21:24,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:24,224 INFO L470 AbstractCegarLoop]: Abstraction has 17341 states and 28393 transitions. [2021-12-06 22:21:24,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 12.03125) internal successors, (385), 25 states have internal predecessors, (385), 17 states have call successors, (92), 11 states have call predecessors, (92), 14 states have return successors, (91), 22 states have call predecessors, (91), 17 states have call successors, (91) [2021-12-06 22:21:24,224 INFO L276 IsEmpty]: Start isEmpty. Operand 17341 states and 28393 transitions. [2021-12-06 22:21:24,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2021-12-06 22:21:24,262 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:24,262 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2021-12-06 22:21:24,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 22:21:24,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:21:24,464 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:24,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:24,465 INFO L85 PathProgramCache]: Analyzing trace with hash -131364909, now seen corresponding path program 1 times [2021-12-06 22:21:24,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:24,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686843160] [2021-12-06 22:21:24,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:24,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:21:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:21:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:21:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:21:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:21:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:21:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 22:21:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:21:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:21:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:21:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:21:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:21:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:21:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-06 22:21:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:21:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:21:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:21:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:21:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:21:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:21:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:21:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-12-06 22:21:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:21:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:21:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:21:24,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:21:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:21:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:21:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:21:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-12-06 22:21:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:21:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2021-12-06 22:21:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2021-12-06 22:21:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:21:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2021-12-06 22:21:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2021-12-06 22:21:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2021-12-06 22:21:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2021-12-06 22:21:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2021-12-06 22:21:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-12-06 22:21:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2021-12-06 22:21:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2021-12-06 22:21:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2021-12-06 22:21:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1341 backedges. 73 proven. 102 refuted. 0 times theorem prover too weak. 1166 trivial. 0 not checked. [2021-12-06 22:21:24,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:24,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686843160] [2021-12-06 22:21:24,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686843160] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:21:24,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670812149] [2021-12-06 22:21:24,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:24,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:21:24,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:21:24,906 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:21:24,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 22:21:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:25,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 3397 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 22:21:25,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:21:25,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1341 backedges. 707 proven. 0 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2021-12-06 22:21:25,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:21:25,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670812149] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:25,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:21:25,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2021-12-06 22:21:25,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567726975] [2021-12-06 22:21:25,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:25,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:21:25,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:25,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:21:25,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2021-12-06 22:21:25,530 INFO L87 Difference]: Start difference. First operand 17341 states and 28393 transitions. Second operand has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 6 states have internal predecessors, (234), 2 states have call successors, (41), 2 states have call predecessors, (41), 3 states have return successors, (40), 3 states have call predecessors, (40), 2 states have call successors, (40) [2021-12-06 22:21:27,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:27,940 INFO L93 Difference]: Finished difference Result 36972 states and 60964 transitions. [2021-12-06 22:21:27,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:21:27,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 6 states have internal predecessors, (234), 2 states have call successors, (41), 2 states have call predecessors, (41), 3 states have return successors, (40), 3 states have call predecessors, (40), 2 states have call successors, (40) Word has length 526 [2021-12-06 22:21:27,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:27,998 INFO L225 Difference]: With dead ends: 36972 [2021-12-06 22:21:27,998 INFO L226 Difference]: Without dead ends: 19743 [2021-12-06 22:21:28,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 637 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2021-12-06 22:21:28,037 INFO L933 BasicCegarLoop]: 1033 mSDtfsCounter, 167 mSDsluCounter, 4894 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 5927 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:28,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 5927 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:21:28,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19743 states. [2021-12-06 22:21:29,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19743 to 17521. [2021-12-06 22:21:29,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17521 states, 14321 states have (on average 1.639201173102437) internal successors, (23475), 14688 states have internal predecessors, (23475), 2097 states have call successors, (2097), 936 states have call predecessors, (2097), 1102 states have return successors, (3041), 2160 states have call predecessors, (3041), 2079 states have call successors, (3041) [2021-12-06 22:21:29,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17521 states to 17521 states and 28613 transitions. [2021-12-06 22:21:29,793 INFO L78 Accepts]: Start accepts. Automaton has 17521 states and 28613 transitions. Word has length 526 [2021-12-06 22:21:29,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:29,793 INFO L470 AbstractCegarLoop]: Abstraction has 17521 states and 28613 transitions. [2021-12-06 22:21:29,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 6 states have internal predecessors, (234), 2 states have call successors, (41), 2 states have call predecessors, (41), 3 states have return successors, (40), 3 states have call predecessors, (40), 2 states have call successors, (40) [2021-12-06 22:21:29,794 INFO L276 IsEmpty]: Start isEmpty. Operand 17521 states and 28613 transitions. [2021-12-06 22:21:29,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2021-12-06 22:21:29,832 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:29,832 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 15, 12, 12, 12, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:21:29,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-06 22:21:30,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-12-06 22:21:30,033 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:30,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:30,034 INFO L85 PathProgramCache]: Analyzing trace with hash 2142978142, now seen corresponding path program 1 times [2021-12-06 22:21:30,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:30,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512960436] [2021-12-06 22:21:30,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:30,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:21:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:21:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:21:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:21:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:21:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:21:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 22:21:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:21:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:21:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:21:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:21:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:21:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:21:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-06 22:21:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:21:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:21:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:21:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:21:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:21:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:21:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:21:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:21:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2021-12-06 22:21:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:21:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:21:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:21:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 22:21:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:21:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:21:30,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:21:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:21:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:21:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:21:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-12-06 22:21:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:21:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2021-12-06 22:21:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2021-12-06 22:21:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:21:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2021-12-06 22:21:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2021-12-06 22:21:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2021-12-06 22:21:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2021-12-06 22:21:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2021-12-06 22:21:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-12-06 22:21:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2021-12-06 22:21:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2021-12-06 22:21:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2021-12-06 22:21:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1678 backedges. 102 proven. 145 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2021-12-06 22:21:30,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:30,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512960436] [2021-12-06 22:21:30,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512960436] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:21:30,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740836279] [2021-12-06 22:21:30,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:30,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:21:30,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:21:30,455 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:21:30,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 22:21:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 3509 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 22:21:30,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:21:31,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1678 backedges. 1151 proven. 10 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2021-12-06 22:21:31,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:21:31,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1678 backedges. 129 proven. 76 refuted. 0 times theorem prover too weak. 1473 trivial. 0 not checked. [2021-12-06 22:21:31,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740836279] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:21:31,968 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:21:31,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 11] total 29 [2021-12-06 22:21:31,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764831107] [2021-12-06 22:21:31,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:21:31,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 22:21:31,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:31,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 22:21:31,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2021-12-06 22:21:31,971 INFO L87 Difference]: Start difference. First operand 17521 states and 28613 transitions. Second operand has 29 states, 28 states have (on average 19.071428571428573) internal successors, (534), 24 states have internal predecessors, (534), 15 states have call successors, (125), 11 states have call predecessors, (125), 17 states have return successors, (125), 17 states have call predecessors, (125), 15 states have call successors, (125) [2021-12-06 22:22:21,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:21,359 INFO L93 Difference]: Finished difference Result 75530 states and 136335 transitions. [2021-12-06 22:22:21,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2021-12-06 22:22:21,360 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 19.071428571428573) internal successors, (534), 24 states have internal predecessors, (534), 15 states have call successors, (125), 11 states have call predecessors, (125), 17 states have return successors, (125), 17 states have call predecessors, (125), 15 states have call successors, (125) Word has length 566 [2021-12-06 22:22:21,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:21,643 INFO L225 Difference]: With dead ends: 75530 [2021-12-06 22:22:21,643 INFO L226 Difference]: Without dead ends: 55874 [2021-12-06 22:22:21,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1448 GetRequests, 1292 SyntacticMatches, 2 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9393 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=4210, Invalid=19970, Unknown=0, NotChecked=0, Total=24180 [2021-12-06 22:22:21,788 INFO L933 BasicCegarLoop]: 1731 mSDtfsCounter, 14626 mSDsluCounter, 9870 mSDsCounter, 0 mSdLazyCounter, 39071 mSolverCounterSat, 9955 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14626 SdHoareTripleChecker+Valid, 11601 SdHoareTripleChecker+Invalid, 49026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 9955 IncrementalHoareTripleChecker+Valid, 39071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:21,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14626 Valid, 11601 Invalid, 49026 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [9955 Valid, 39071 Invalid, 0 Unknown, 0 Unchecked, 30.8s Time] [2021-12-06 22:22:21,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55874 states. [2021-12-06 22:22:25,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55874 to 32435. [2021-12-06 22:22:25,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32435 states, 26111 states have (on average 1.606794071464134) internal successors, (41955), 26784 states have internal predecessors, (41955), 4113 states have call successors, (4113), 1888 states have call predecessors, (4113), 2210 states have return successors, (6122), 4290 states have call predecessors, (6122), 4088 states have call successors, (6122) [2021-12-06 22:22:25,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32435 states to 32435 states and 52190 transitions. [2021-12-06 22:22:25,750 INFO L78 Accepts]: Start accepts. Automaton has 32435 states and 52190 transitions. Word has length 566 [2021-12-06 22:22:25,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:25,750 INFO L470 AbstractCegarLoop]: Abstraction has 32435 states and 52190 transitions. [2021-12-06 22:22:25,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 19.071428571428573) internal successors, (534), 24 states have internal predecessors, (534), 15 states have call successors, (125), 11 states have call predecessors, (125), 17 states have return successors, (125), 17 states have call predecessors, (125), 15 states have call successors, (125) [2021-12-06 22:22:25,750 INFO L276 IsEmpty]: Start isEmpty. Operand 32435 states and 52190 transitions. [2021-12-06 22:22:25,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2021-12-06 22:22:25,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:25,836 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 20, 16, 12, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:22:25,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-06 22:22:26,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-12-06 22:22:26,039 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:22:26,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:26,040 INFO L85 PathProgramCache]: Analyzing trace with hash -682408852, now seen corresponding path program 1 times [2021-12-06 22:22:26,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:22:26,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854758451] [2021-12-06 22:22:26,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:26,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:22:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:22:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:26,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:22:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:22:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:22:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:22:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:22:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 22:22:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:22:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:22:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:22:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:22:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 22:22:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 22:22:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-06 22:22:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:22:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:22:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:22:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:22:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:22:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:22:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:22:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:22:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:22:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:22:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:22:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-12-06 22:22:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:22:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:22:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:22:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:22:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:22:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:22:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:22:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:22:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:22:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:22:26,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:22:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2021-12-06 22:22:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:22:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2021-12-06 22:22:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2021-12-06 22:22:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:22:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2021-12-06 22:22:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2021-12-06 22:22:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2021-12-06 22:22:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2021-12-06 22:22:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2021-12-06 22:22:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2021-12-06 22:22:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2021-12-06 22:22:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2021-12-06 22:22:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2021-12-06 22:22:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2559 backedges. 125 proven. 119 refuted. 0 times theorem prover too weak. 2315 trivial. 0 not checked. [2021-12-06 22:22:26,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:22:26,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854758451] [2021-12-06 22:22:26,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854758451] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:22:26,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529382144] [2021-12-06 22:22:26,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:26,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:22:26,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:22:26,452 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:22:26,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 22:22:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:26,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 3635 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 22:22:26,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:27,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2559 backedges. 1043 proven. 0 refuted. 0 times theorem prover too weak. 1516 trivial. 0 not checked. [2021-12-06 22:22:27,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:22:27,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529382144] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:22:27,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:22:27,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 16 [2021-12-06 22:22:27,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614629039] [2021-12-06 22:22:27,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:22:27,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:22:27,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:22:27,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:22:27,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:22:27,225 INFO L87 Difference]: Start difference. First operand 32435 states and 52190 transitions. Second operand has 5 states, 5 states have (on average 40.4) internal successors, (202), 4 states have internal predecessors, (202), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-12-06 22:22:31,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:31,133 INFO L93 Difference]: Finished difference Result 64112 states and 104832 transitions. [2021-12-06 22:22:31,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:22:31,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.4) internal successors, (202), 4 states have internal predecessors, (202), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 610 [2021-12-06 22:22:31,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:31,240 INFO L225 Difference]: With dead ends: 64112 [2021-12-06 22:22:31,240 INFO L226 Difference]: Without dead ends: 31481 [2021-12-06 22:22:31,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 732 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:22:31,352 INFO L933 BasicCegarLoop]: 825 mSDtfsCounter, 668 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:31,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [683 Valid, 2110 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:22:31,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31481 states. [2021-12-06 22:22:34,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31481 to 31104. [2021-12-06 22:22:34,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31104 states, 25130 states have (on average 1.6081177875049741) internal successors, (40412), 25748 states have internal predecessors, (40412), 4061 states have call successors, (4061), 1859 states have call predecessors, (4061), 1912 states have return successors, (5473), 4024 states have call predecessors, (5473), 4036 states have call successors, (5473) [2021-12-06 22:22:34,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31104 states to 31104 states and 49946 transitions. [2021-12-06 22:22:34,708 INFO L78 Accepts]: Start accepts. Automaton has 31104 states and 49946 transitions. Word has length 610 [2021-12-06 22:22:34,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:34,708 INFO L470 AbstractCegarLoop]: Abstraction has 31104 states and 49946 transitions. [2021-12-06 22:22:34,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.4) internal successors, (202), 4 states have internal predecessors, (202), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-12-06 22:22:34,708 INFO L276 IsEmpty]: Start isEmpty. Operand 31104 states and 49946 transitions. [2021-12-06 22:22:34,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2021-12-06 22:22:34,756 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:34,757 INFO L514 BasicCegarLoop]: trace histogram [12, 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:22:34,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-06 22:22:34,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:22:34,958 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:22:34,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:34,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1788381449, now seen corresponding path program 1 times [2021-12-06 22:22:34,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:22:34,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116592288] [2021-12-06 22:22:34,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:34,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:22:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:22:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:22:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:22:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:22:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:22:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:22:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 22:22:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:22:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:22:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:22:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:22:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 22:22:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 22:22:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-06 22:22:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:22:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:22:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:22:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:22:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:35,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:22:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:22:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:22:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:22:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-06 22:22:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:22:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:22:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:22:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:22:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:22:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:22:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:22:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:22:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 22:22:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-12-06 22:22:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:22:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2021-12-06 22:22:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2021-12-06 22:22:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2021-12-06 22:22:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:22:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2021-12-06 22:22:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2021-12-06 22:22:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2021-12-06 22:22:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2021-12-06 22:22:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2021-12-06 22:22:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2021-12-06 22:22:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2021-12-06 22:22:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2021-12-06 22:22:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2021-12-06 22:22:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 61 proven. 65 refuted. 0 times theorem prover too weak. 1183 trivial. 0 not checked. [2021-12-06 22:22:35,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:22:35,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116592288] [2021-12-06 22:22:35,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116592288] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:22:35,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001448282] [2021-12-06 22:22:35,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:35,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:22:35,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:22:35,371 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:22:35,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-06 22:22:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:35,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 3506 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:22:35,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:36,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 802 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-12-06 22:22:36,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:22:36,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001448282] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:22:36,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:22:36,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 20 [2021-12-06 22:22:36,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64382801] [2021-12-06 22:22:36,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:22:36,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:22:36,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:22:36,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:22:36,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2021-12-06 22:22:36,023 INFO L87 Difference]: Start difference. First operand 31104 states and 49946 transitions. Second operand has 8 states, 7 states have (on average 40.0) internal successors, (280), 7 states have internal predecessors, (280), 4 states have call successors, (52), 3 states have call predecessors, (52), 5 states have return successors, (52), 4 states have call predecessors, (52), 4 states have call successors, (52) [2021-12-06 22:22:42,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:42,825 INFO L93 Difference]: Finished difference Result 83913 states and 135549 transitions. [2021-12-06 22:22:42,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:22:42,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 40.0) internal successors, (280), 7 states have internal predecessors, (280), 4 states have call successors, (52), 3 states have call predecessors, (52), 5 states have return successors, (52), 4 states have call predecessors, (52), 4 states have call successors, (52) Word has length 557 [2021-12-06 22:22:42,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:43,022 INFO L225 Difference]: With dead ends: 83913 [2021-12-06 22:22:43,022 INFO L226 Difference]: Without dead ends: 58194 [2021-12-06 22:22:43,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 703 GetRequests, 678 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2021-12-06 22:22:43,130 INFO L933 BasicCegarLoop]: 945 mSDtfsCounter, 842 mSDsluCounter, 4747 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 5692 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:43,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 5692 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 22:22:43,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58194 states. [2021-12-06 22:22:49,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58194 to 57797. [2021-12-06 22:22:49,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57797 states, 46696 states have (on average 1.6173119753297927) internal successors, (75522), 47953 states have internal predecessors, (75522), 7498 states have call successors, (7498), 3419 states have call predecessors, (7498), 3602 states have return successors, (10722), 7456 states have call predecessors, (10722), 7457 states have call successors, (10722) [2021-12-06 22:22:49,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57797 states to 57797 states and 93742 transitions. [2021-12-06 22:22:49,656 INFO L78 Accepts]: Start accepts. Automaton has 57797 states and 93742 transitions. Word has length 557 [2021-12-06 22:22:49,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:49,657 INFO L470 AbstractCegarLoop]: Abstraction has 57797 states and 93742 transitions. [2021-12-06 22:22:49,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 40.0) internal successors, (280), 7 states have internal predecessors, (280), 4 states have call successors, (52), 3 states have call predecessors, (52), 5 states have return successors, (52), 4 states have call predecessors, (52), 4 states have call successors, (52) [2021-12-06 22:22:49,657 INFO L276 IsEmpty]: Start isEmpty. Operand 57797 states and 93742 transitions. [2021-12-06 22:22:49,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2021-12-06 22:22:49,756 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:49,756 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 20, 16, 12, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:22:49,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-12-06 22:22:49,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-12-06 22:22:49,958 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:22:49,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:49,959 INFO L85 PathProgramCache]: Analyzing trace with hash 837486038, now seen corresponding path program 1 times [2021-12-06 22:22:49,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:22:49,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207574378] [2021-12-06 22:22:49,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:49,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:22:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:22:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:22:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:22:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:22:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:22:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:22:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 22:22:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:22:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:22:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:22:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:22:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 22:22:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 22:22:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-06 22:22:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:22:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:22:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:22:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:22:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:22:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:22:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:22:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:22:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:22:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:22:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:22:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-12-06 22:22:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:22:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:22:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:22:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:22:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:22:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:22:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:22:50,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:22:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:22:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:22:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:22:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2021-12-06 22:22:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:22:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2021-12-06 22:22:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2021-12-06 22:22:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2021-12-06 22:22:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:22:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2021-12-06 22:22:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2021-12-06 22:22:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-12-06 22:22:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2021-12-06 22:22:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2021-12-06 22:22:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2021-12-06 22:22:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2021-12-06 22:22:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2021-12-06 22:22:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 606 [2021-12-06 22:22:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2562 backedges. 119 proven. 119 refuted. 0 times theorem prover too weak. 2324 trivial. 0 not checked. [2021-12-06 22:22:50,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:22:50,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207574378] [2021-12-06 22:22:50,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207574378] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:22:50,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084326019] [2021-12-06 22:22:50,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:50,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:22:50,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:22:50,388 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:22:50,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-06 22:22:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:50,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 3652 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 22:22:50,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:51,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2562 backedges. 1062 proven. 12 refuted. 0 times theorem prover too weak. 1488 trivial. 0 not checked. [2021-12-06 22:22:51,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:22:52,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2562 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 2439 trivial. 0 not checked. [2021-12-06 22:22:52,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084326019] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:22:52,199 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:22:52,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 24 [2021-12-06 22:22:52,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9040974] [2021-12-06 22:22:52,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:22:52,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 22:22:52,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:22:52,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 22:22:52,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2021-12-06 22:22:52,201 INFO L87 Difference]: Start difference. First operand 57797 states and 93742 transitions. Second operand has 24 states, 24 states have (on average 18.625) internal successors, (447), 18 states have internal predecessors, (447), 10 states have call successors, (110), 10 states have call predecessors, (110), 13 states have return successors, (103), 14 states have call predecessors, (103), 10 states have call successors, (103) [2021-12-06 22:23:26,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:23:26,587 INFO L93 Difference]: Finished difference Result 141312 states and 243128 transitions. [2021-12-06 22:23:26,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-12-06 22:23:26,589 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 18.625) internal successors, (447), 18 states have internal predecessors, (447), 10 states have call successors, (110), 10 states have call predecessors, (110), 13 states have return successors, (103), 14 states have call predecessors, (103), 10 states have call successors, (103) Word has length 616 [2021-12-06 22:23:26,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:23:27,038 INFO L225 Difference]: With dead ends: 141312 [2021-12-06 22:23:27,038 INFO L226 Difference]: Without dead ends: 90395 [2021-12-06 22:23:27,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1444 GetRequests, 1375 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1434 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1182, Invalid=3788, Unknown=0, NotChecked=0, Total=4970 [2021-12-06 22:23:27,416 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 11148 mSDsluCounter, 3175 mSDsCounter, 0 mSdLazyCounter, 20057 mSolverCounterSat, 6428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11148 SdHoareTripleChecker+Valid, 3941 SdHoareTripleChecker+Invalid, 26485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6428 IncrementalHoareTripleChecker+Valid, 20057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:23:27,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11148 Valid, 3941 Invalid, 26485 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6428 Valid, 20057 Invalid, 0 Unknown, 0 Unchecked, 14.8s Time] [2021-12-06 22:23:27,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90395 states. [2021-12-06 22:23:35,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90395 to 64480. [2021-12-06 22:23:35,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64480 states, 51548 states have (on average 1.5839411810351518) internal successors, (81649), 53112 states have internal predecessors, (81649), 8554 states have call successors, (8554), 3993 states have call predecessors, (8554), 4377 states have return successors, (12971), 8418 states have call predecessors, (12971), 8509 states have call successors, (12971) [2021-12-06 22:23:35,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64480 states to 64480 states and 103174 transitions. [2021-12-06 22:23:35,632 INFO L78 Accepts]: Start accepts. Automaton has 64480 states and 103174 transitions. Word has length 616 [2021-12-06 22:23:35,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:23:35,632 INFO L470 AbstractCegarLoop]: Abstraction has 64480 states and 103174 transitions. [2021-12-06 22:23:35,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 18.625) internal successors, (447), 18 states have internal predecessors, (447), 10 states have call successors, (110), 10 states have call predecessors, (110), 13 states have return successors, (103), 14 states have call predecessors, (103), 10 states have call successors, (103) [2021-12-06 22:23:35,632 INFO L276 IsEmpty]: Start isEmpty. Operand 64480 states and 103174 transitions. [2021-12-06 22:23:35,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2021-12-06 22:23:35,695 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:23:35,696 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:23:35,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-12-06 22:23:35,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-12-06 22:23:35,897 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:23:35,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:23:35,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1481251909, now seen corresponding path program 1 times [2021-12-06 22:23:35,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:23:35,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266677978] [2021-12-06 22:23:35,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:23:35,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:23:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:23:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:23:36,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:23:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:23:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:23:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:23:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:23:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:23:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:23:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:23:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:23:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:23:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:23:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:23:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:23:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:23:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:23:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:23:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-06 22:23:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:23:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:23:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:23:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:23:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:23:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:23:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:23:36,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:23:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:23:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:23:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:23:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:23:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:23:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-12-06 22:23:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:23:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:23:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:23:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:23:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:23:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:23:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:23:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:23:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:23:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:23:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:23:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:23:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:23:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2021-12-06 22:23:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:23:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:23:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2021-12-06 22:23:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:23:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2021-12-06 22:23:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2021-12-06 22:23:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:23:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:23:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2021-12-06 22:23:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2021-12-06 22:23:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2021-12-06 22:23:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2021-12-06 22:23:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2021-12-06 22:23:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2021-12-06 22:23:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2021-12-06 22:23:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2021-12-06 22:23:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:23:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2021-12-06 22:23:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 74 proven. 143 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2021-12-06 22:23:36,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:23:36,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266677978] [2021-12-06 22:23:36,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266677978] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:23:36,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644266958] [2021-12-06 22:23:36,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:23:36,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:23:36,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:23:36,427 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:23:36,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-06 22:23:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:36,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 3445 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 22:23:36,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:23:37,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 608 proven. 35 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2021-12-06 22:23:37,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:23:38,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 88 proven. 59 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2021-12-06 22:23:38,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644266958] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:23:38,009 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:23:38,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 14] total 38 [2021-12-06 22:23:38,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808038085] [2021-12-06 22:23:38,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:23:38,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-06 22:23:38,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:23:38,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-06 22:23:38,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1285, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 22:23:38,011 INFO L87 Difference]: Start difference. First operand 64480 states and 103174 transitions. Second operand has 38 states, 35 states have (on average 12.82857142857143) internal successors, (449), 27 states have internal predecessors, (449), 15 states have call successors, (114), 10 states have call predecessors, (114), 19 states have return successors, (115), 21 states have call predecessors, (115), 15 states have call successors, (115) [2021-12-06 22:25:42,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:42,486 INFO L93 Difference]: Finished difference Result 267582 states and 499379 transitions. [2021-12-06 22:25:42,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 322 states. [2021-12-06 22:25:42,488 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 12.82857142857143) internal successors, (449), 27 states have internal predecessors, (449), 15 states have call successors, (114), 10 states have call predecessors, (114), 19 states have return successors, (115), 21 states have call predecessors, (115), 15 states have call successors, (115) Word has length 545 [2021-12-06 22:25:42,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:43,801 INFO L225 Difference]: With dead ends: 267582 [2021-12-06 22:25:43,801 INFO L226 Difference]: Without dead ends: 203366 [2021-12-06 22:25:44,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1698 GetRequests, 1336 SyntacticMatches, 8 SemanticMatches, 354 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53640 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=11274, Invalid=115106, Unknown=0, NotChecked=0, Total=126380 [2021-12-06 22:25:44,712 INFO L933 BasicCegarLoop]: 3468 mSDtfsCounter, 29385 mSDsluCounter, 24789 mSDsCounter, 0 mSdLazyCounter, 109040 mSolverCounterSat, 26188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29385 SdHoareTripleChecker+Valid, 28257 SdHoareTripleChecker+Invalid, 135228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 26188 IncrementalHoareTripleChecker+Valid, 109040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:44,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29385 Valid, 28257 Invalid, 135228 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [26188 Valid, 109040 Invalid, 0 Unknown, 0 Unchecked, 57.5s Time] [2021-12-06 22:25:44,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203366 states. [2021-12-06 22:26:01,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203366 to 112414. [2021-12-06 22:26:01,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112414 states, 90343 states have (on average 1.6012419335200292) internal successors, (144661), 93379 states have internal predecessors, (144661), 14427 states have call successors, (14427), 6679 states have call predecessors, (14427), 7643 states have return successors, (20374), 14347 states have call predecessors, (20374), 14364 states have call successors, (20374) [2021-12-06 22:26:02,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112414 states to 112414 states and 179462 transitions. [2021-12-06 22:26:02,188 INFO L78 Accepts]: Start accepts. Automaton has 112414 states and 179462 transitions. Word has length 545 [2021-12-06 22:26:02,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:02,189 INFO L470 AbstractCegarLoop]: Abstraction has 112414 states and 179462 transitions. [2021-12-06 22:26:02,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 12.82857142857143) internal successors, (449), 27 states have internal predecessors, (449), 15 states have call successors, (114), 10 states have call predecessors, (114), 19 states have return successors, (115), 21 states have call predecessors, (115), 15 states have call successors, (115) [2021-12-06 22:26:02,189 INFO L276 IsEmpty]: Start isEmpty. Operand 112414 states and 179462 transitions. [2021-12-06 22:26:02,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2021-12-06 22:26:02,256 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:02,257 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 7, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:26:02,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-12-06 22:26:02,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-12-06 22:26:02,458 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:02,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:02,460 INFO L85 PathProgramCache]: Analyzing trace with hash -214976155, now seen corresponding path program 1 times [2021-12-06 22:26:02,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:02,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096040813] [2021-12-06 22:26:02,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:02,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:26:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:26:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:26:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:26:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:26:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:26:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:26:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:26:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:26:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:26:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:26:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:26:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:26:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:26:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-06 22:26:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:26:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:26:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:26:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:26:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:26:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:26:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:26:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:26:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-12-06 22:26:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:26:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:26:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:26:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:26:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:26:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:26:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:26:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:26:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2021-12-06 22:26:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:26:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2021-12-06 22:26:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2021-12-06 22:26:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2021-12-06 22:26:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:26:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2021-12-06 22:26:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2021-12-06 22:26:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2021-12-06 22:26:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2021-12-06 22:26:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-12-06 22:26:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2021-12-06 22:26:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-12-06 22:26:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2021-12-06 22:26:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2021-12-06 22:26:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:02,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 62 proven. 23 refuted. 0 times theorem prover too weak. 1181 trivial. 0 not checked. [2021-12-06 22:26:02,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:02,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096040813] [2021-12-06 22:26:02,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096040813] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:26:02,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747667223] [2021-12-06 22:26:02,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:02,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:26:02,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:26:02,980 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:26:02,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-06 22:26:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:03,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 3538 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 22:26:03,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:26:03,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 674 proven. 0 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2021-12-06 22:26:03,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:26:03,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747667223] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:03,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:26:03,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2021-12-06 22:26:03,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353981049] [2021-12-06 22:26:03,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:03,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:26:03,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:03,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:26:03,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-12-06 22:26:03,640 INFO L87 Difference]: Start difference. First operand 112414 states and 179462 transitions. Second operand has 7 states, 7 states have (on average 37.714285714285715) internal successors, (264), 7 states have internal predecessors, (264), 4 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) [2021-12-06 22:26:17,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:17,792 INFO L93 Difference]: Finished difference Result 225019 states and 359458 transitions. [2021-12-06 22:26:17,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:26:17,793 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.714285714285715) internal successors, (264), 7 states have internal predecessors, (264), 4 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) Word has length 562 [2021-12-06 22:26:17,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:18,224 INFO L225 Difference]: With dead ends: 225019 [2021-12-06 22:26:18,224 INFO L226 Difference]: Without dead ends: 113152 [2021-12-06 22:26:18,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 709 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2021-12-06 22:26:18,562 INFO L933 BasicCegarLoop]: 889 mSDtfsCounter, 401 mSDsluCounter, 4126 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 5015 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:18,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 5015 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:26:18,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113152 states. [2021-12-06 22:26:31,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113152 to 113152. [2021-12-06 22:26:31,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113152 states, 90958 states have (on average 1.600606873502056) internal successors, (145588), 93994 states have internal predecessors, (145588), 14511 states have call successors, (14511), 6718 states have call predecessors, (14511), 7682 states have return successors, (20458), 14431 states have call predecessors, (20458), 14448 states have call successors, (20458) [2021-12-06 22:26:32,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113152 states to 113152 states and 180557 transitions. [2021-12-06 22:26:32,678 INFO L78 Accepts]: Start accepts. Automaton has 113152 states and 180557 transitions. Word has length 562 [2021-12-06 22:26:32,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:32,679 INFO L470 AbstractCegarLoop]: Abstraction has 113152 states and 180557 transitions. [2021-12-06 22:26:32,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.714285714285715) internal successors, (264), 7 states have internal predecessors, (264), 4 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) [2021-12-06 22:26:32,679 INFO L276 IsEmpty]: Start isEmpty. Operand 113152 states and 180557 transitions. [2021-12-06 22:26:32,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2021-12-06 22:26:32,749 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:32,750 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 7, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:26:32,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-12-06 22:26:32,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-12-06 22:26:32,952 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:32,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:32,953 INFO L85 PathProgramCache]: Analyzing trace with hash -849078152, now seen corresponding path program 1 times [2021-12-06 22:26:32,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:32,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081294140] [2021-12-06 22:26:32,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:32,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:26:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:26:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:26:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:26:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:26:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:26:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:26:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:26:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:26:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:26:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:26:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:26:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:26:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:26:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-06 22:26:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:26:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:26:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:26:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:26:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:26:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:26:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:26:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:26:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-12-06 22:26:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:26:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:26:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:26:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:26:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:26:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:26:33,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:26:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:26:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:26:33,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2021-12-06 22:26:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:26:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2021-12-06 22:26:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2021-12-06 22:26:33,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2021-12-06 22:26:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:26:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2021-12-06 22:26:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2021-12-06 22:26:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2021-12-06 22:26:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2021-12-06 22:26:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2021-12-06 22:26:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2021-12-06 22:26:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2021-12-06 22:26:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2021-12-06 22:26:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2021-12-06 22:26:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1271 backedges. 62 proven. 23 refuted. 0 times theorem prover too weak. 1186 trivial. 0 not checked. [2021-12-06 22:26:33,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:33,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081294140] [2021-12-06 22:26:33,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081294140] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:26:33,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175300082] [2021-12-06 22:26:33,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:33,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:26:33,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:26:33,335 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:26:33,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0115f587-689e-49d0-8f50-3a4c6b1140c4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-06 22:26:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:33,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 3550 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 22:26:33,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:26:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1271 backedges. 665 proven. 72 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2021-12-06 22:26:34,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:26:35,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1271 backedges. 93 proven. 30 refuted. 0 times theorem prover too weak. 1148 trivial. 0 not checked. [2021-12-06 22:26:35,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175300082] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:26:35,000 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:26:35,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 14] total 34 [2021-12-06 22:26:35,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078639020] [2021-12-06 22:26:35,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:26:35,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-06 22:26:35,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:35,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-06 22:26:35,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 22:26:35,002 INFO L87 Difference]: Start difference. First operand 113152 states and 180557 transitions. Second operand has 34 states, 33 states have (on average 15.787878787878787) internal successors, (521), 25 states have internal predecessors, (521), 17 states have call successors, (119), 13 states have call predecessors, (119), 16 states have return successors, (114), 21 states have call predecessors, (114), 17 states have call successors, (114) [2021-12-06 22:28:42,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:28:42,853 INFO L93 Difference]: Finished difference Result 421235 states and 746004 transitions. [2021-12-06 22:28:42,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2021-12-06 22:28:42,854 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 15.787878787878787) internal successors, (521), 25 states have internal predecessors, (521), 17 states have call successors, (119), 13 states have call predecessors, (119), 16 states have return successors, (114), 21 states have call predecessors, (114), 17 states have call successors, (114) Word has length 562 [2021-12-06 22:28:42,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:28:44,957 INFO L225 Difference]: With dead ends: 421235 [2021-12-06 22:28:44,957 INFO L226 Difference]: Without dead ends: 307520 [2021-12-06 22:28:45,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1680 GetRequests, 1379 SyntacticMatches, 0 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43158 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=16277, Invalid=75229, Unknown=0, NotChecked=0, Total=91506 [2021-12-06 22:28:45,943 INFO L933 BasicCegarLoop]: 894 mSDtfsCounter, 33264 mSDsluCounter, 6979 mSDsCounter, 0 mSdLazyCounter, 46899 mSolverCounterSat, 21330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33280 SdHoareTripleChecker+Valid, 7873 SdHoareTripleChecker+Invalid, 68229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 21330 IncrementalHoareTripleChecker+Valid, 46899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:28:45,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33280 Valid, 7873 Invalid, 68229 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [21330 Valid, 46899 Invalid, 0 Unknown, 0 Unchecked, 34.4s Time] [2021-12-06 22:28:46,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307520 states.