./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef50663-85d2-48d9-ba37-1bc6e1c89768/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef50663-85d2-48d9-ba37-1bc6e1c89768/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef50663-85d2-48d9-ba37-1bc6e1c89768/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef50663-85d2-48d9-ba37-1bc6e1c89768/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef50663-85d2-48d9-ba37-1bc6e1c89768/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef50663-85d2-48d9-ba37-1bc6e1c89768/bin/uautomizer-tBqnrhUYjU --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 64bit --witnessprinter.graph.data.programhash 4295d1eb99eb4c4e306792d8730363a971cf6332e7c089b8c1be6cbddd5edcb9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 23:09:25,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:09:25,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:09:25,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:09:25,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:09:25,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:09:25,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:09:25,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:09:25,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:09:25,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:09:25,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:09:25,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:09:25,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:09:25,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:09:25,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:09:25,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:09:25,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:09:25,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:09:25,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:09:25,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:09:25,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:09:25,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:09:25,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:09:25,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:09:25,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:09:25,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:09:25,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:09:25,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:09:25,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:09:25,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:09:25,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:09:25,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:09:25,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:09:25,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:09:25,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:09:25,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:09:25,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:09:25,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:09:25,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:09:25,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:09:25,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:09:25,691 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef50663-85d2-48d9-ba37-1bc6e1c89768/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 23:09:25,718 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:09:25,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:09:25,722 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:09:25,723 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:09:25,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:09:25,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:09:25,729 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:09:25,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:09:25,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:09:25,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:09:25,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 23:09:25,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:09:25,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 23:09:25,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 23:09:25,732 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:09:25,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 23:09:25,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:09:25,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:09:25,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:09:25,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:09:25,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:09:25,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:09:25,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 23:09:25,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 23:09:25,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 23:09:25,735 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 23:09:25,736 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 23:09:25,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 23:09:25,736 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:09:25,738 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_3ef50663-85d2-48d9-ba37-1bc6e1c89768/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef50663-85d2-48d9-ba37-1bc6e1c89768/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4295d1eb99eb4c4e306792d8730363a971cf6332e7c089b8c1be6cbddd5edcb9 [2021-11-02 23:09:26,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:09:26,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:09:26,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:09:26,126 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:09:26,127 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:09:26,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef50663-85d2-48d9-ba37-1bc6e1c89768/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i [2021-11-02 23:09:26,225 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef50663-85d2-48d9-ba37-1bc6e1c89768/bin/uautomizer-tBqnrhUYjU/data/72de42792/57e9506e7a184d358ad01fadb119335a/FLAG18a5206b6 [2021-11-02 23:09:27,536 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:09:27,537 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef50663-85d2-48d9-ba37-1bc6e1c89768/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i [2021-11-02 23:09:27,634 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef50663-85d2-48d9-ba37-1bc6e1c89768/bin/uautomizer-tBqnrhUYjU/data/72de42792/57e9506e7a184d358ad01fadb119335a/FLAG18a5206b6 [2021-11-02 23:09:27,702 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef50663-85d2-48d9-ba37-1bc6e1c89768/bin/uautomizer-tBqnrhUYjU/data/72de42792/57e9506e7a184d358ad01fadb119335a [2021-11-02 23:09:27,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:09:27,706 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 23:09:27,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:09:27,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:09:27,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:09:27,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:09:27" (1/1) ... [2021-11-02 23:09:27,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18d6cf8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:27, skipping insertion in model container [2021-11-02 23:09:27,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:09:27" (1/1) ... [2021-11-02 23:09:27,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:09:27,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:09:34,123 WARN L228 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_3ef50663-85d2-48d9-ba37-1bc6e1c89768/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[487689,487702] [2021-11-02 23:09:34,127 WARN L228 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_3ef50663-85d2-48d9-ba37-1bc6e1c89768/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[487834,487847] [2021-11-02 23:09:34,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:09:34,290 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:09:35,020 WARN L228 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_3ef50663-85d2-48d9-ba37-1bc6e1c89768/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[487689,487702] [2021-11-02 23:09:35,021 WARN L228 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_3ef50663-85d2-48d9-ba37-1bc6e1c89768/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[487834,487847] [2021-11-02 23:09:35,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:09:35,541 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:09:35,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:35 WrapperNode [2021-11-02 23:09:35,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:09:35,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 23:09:35,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 23:09:35,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 23:09:35,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:35" (1/1) ... [2021-11-02 23:09:35,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:35" (1/1) ... [2021-11-02 23:09:37,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 23:09:37,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:09:37,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:09:37,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:09:37,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:35" (1/1) ... [2021-11-02 23:09:37,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:35" (1/1) ... [2021-11-02 23:09:38,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:35" (1/1) ... [2021-11-02 23:09:38,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:35" (1/1) ... [2021-11-02 23:09:39,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:35" (1/1) ... [2021-11-02 23:09:40,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:35" (1/1) ... [2021-11-02 23:09:40,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:35" (1/1) ... [2021-11-02 23:09:40,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:09:40,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:09:40,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:09:40,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:09:40,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:35" (1/1) ... [2021-11-02 23:09:40,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:09:40,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef50663-85d2-48d9-ba37-1bc6e1c89768/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:09:40,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef50663-85d2-48d9-ba37-1bc6e1c89768/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 23:09:40,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ef50663-85d2-48d9-ba37-1bc6e1c89768/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 23:09:40,852 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_hw_vf [2021-11-02 23:09:40,853 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_hw_vf [2021-11-02 23:09:40,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 23:09:40,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 23:09:40,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 23:09:40,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 23:09:40,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 23:09:40,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 23:09:40,855 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_posted_mbx [2021-11-02 23:09:40,855 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_posted_mbx [2021-11-02 23:09:40,855 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_hw_vf [2021-11-02 23:09:40,855 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_hw_vf [2021-11-02 23:09:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:09:40,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:09:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_poll_for_ack [2021-11-02 23:09:40,856 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_poll_for_ack [2021-11-02 23:09:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 23:09:40,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 23:09:40,857 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_rar_set_vf [2021-11-02 23:09:40,857 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_rar_set_vf [2021-11-02 23:09:40,857 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_link_vf [2021-11-02 23:09:40,857 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_link_vf [2021-11-02 23:09:40,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:09:40,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 23:09:40,858 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-02 23:09:40,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-02 23:09:40,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 23:09:40,859 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2021-11-02 23:09:40,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2021-11-02 23:09:40,859 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_poll_for_msg [2021-11-02 23:09:40,859 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_poll_for_msg [2021-11-02 23:09:40,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 23:09:40,860 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_posted_mbx [2021-11-02 23:09:40,860 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_posted_mbx [2021-11-02 23:09:40,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 23:09:40,860 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-02 23:10:21,209 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-02 23:10:21,210 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-02 23:10:21,211 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-02 23:10:21,211 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-02 23:10:21,214 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-02 23:10:21,215 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-02 23:10:21,295 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:10:21,295 INFO L299 CfgBuilder]: Removed 9881 assume(true) statements. [2021-11-02 23:10:21,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:10:21 BoogieIcfgContainer [2021-11-02 23:10:21,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:10:21,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 23:10:21,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 23:10:21,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 23:10:21,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:09:27" (1/3) ... [2021-11-02 23:10:21,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1ae7af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:10:21, skipping insertion in model container [2021-11-02 23:10:21,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:09:35" (2/3) ... [2021-11-02 23:10:21,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1ae7af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:10:21, skipping insertion in model container [2021-11-02 23:10:21,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:10:21" (3/3) ... [2021-11-02 23:10:21,315 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i [2021-11-02 23:10:21,321 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 23:10:21,321 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-11-02 23:10:21,401 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 23:10:21,408 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 [2021-11-02 23:10:21,408 INFO L340 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-11-02 23:10:21,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 10035 states, 9864 states have (on average 1.3700324412003244) internal successors, (13514), 9909 states have internal predecessors, (13514), 115 states have call successors, (115), 10 states have call predecessors, (115), 10 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2021-11-02 23:10:21,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-02 23:10:21,726 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:10:21,727 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:10:21,728 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-02 23:10:21,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:10:21,746 INFO L85 PathProgramCache]: Analyzing trace with hash -670838690, now seen corresponding path program 1 times [2021-11-02 23:10:21,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:10:21,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623395332] [2021-11-02 23:10:21,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:10:21,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:10:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:10:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:10:22,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:10:22,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623395332] [2021-11-02 23:10:22,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623395332] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:10:22,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:10:22,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:10:22,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086559272] [2021-11-02 23:10:22,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:10:22,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:10:22,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:10:22,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:10:22,822 INFO L87 Difference]: Start difference. First operand has 10035 states, 9864 states have (on average 1.3700324412003244) internal successors, (13514), 9909 states have internal predecessors, (13514), 115 states have call successors, (115), 10 states have call predecessors, (115), 10 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:10:26,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:10:26,208 INFO L93 Difference]: Finished difference Result 23057 states and 31634 transitions. [2021-11-02 23:10:26,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:10:26,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-02 23:10:26,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:10:26,326 INFO L225 Difference]: With dead ends: 23057 [2021-11-02 23:10:26,326 INFO L226 Difference]: Without dead ends: 12845 [2021-11-02 23:10:26,368 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:10:26,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12845 states. [2021-11-02 23:10:26,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12845 to 12813. [2021-11-02 23:10:27,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12813 states, 12586 states have (on average 1.3380740505323374) internal successors, (16841), 12631 states have internal predecessors, (16841), 161 states have call successors, (161), 20 states have call predecessors, (161), 20 states have return successors, (161), 161 states have call predecessors, (161), 161 states have call successors, (161) [2021-11-02 23:10:27,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12813 states to 12813 states and 17163 transitions. [2021-11-02 23:10:27,146 INFO L78 Accepts]: Start accepts. Automaton has 12813 states and 17163 transitions. Word has length 103 [2021-11-02 23:10:27,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:10:27,148 INFO L470 AbstractCegarLoop]: Abstraction has 12813 states and 17163 transitions. [2021-11-02 23:10:27,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:10:27,149 INFO L276 IsEmpty]: Start isEmpty. Operand 12813 states and 17163 transitions. [2021-11-02 23:10:27,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-02 23:10:27,155 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:10:27,155 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:10:27,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 23:10:27,156 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-02 23:10:27,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:10:27,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1026933273, now seen corresponding path program 1 times [2021-11-02 23:10:27,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:10:27,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294906325] [2021-11-02 23:10:27,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:10:27,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:10:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:10:27,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:10:27,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:10:27,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294906325] [2021-11-02 23:10:27,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294906325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:10:27,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:10:27,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:10:27,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776675135] [2021-11-02 23:10:27,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:10:27,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:10:27,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:10:27,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:10:27,630 INFO L87 Difference]: Start difference. First operand 12813 states and 17163 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:10:30,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:10:30,912 INFO L93 Difference]: Finished difference Result 32510 states and 43541 transitions. [2021-11-02 23:10:30,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:10:30,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-02 23:10:30,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:10:31,059 INFO L225 Difference]: With dead ends: 32510 [2021-11-02 23:10:31,059 INFO L226 Difference]: Without dead ends: 19893 [2021-11-02 23:10:31,093 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:10:31,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19893 states. [2021-11-02 23:10:31,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19893 to 19265. [2021-11-02 23:10:31,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19265 states, 18940 states have (on average 1.3372756071805703) internal successors, (25328), 18987 states have internal predecessors, (25328), 249 states have call successors, (249), 30 states have call predecessors, (249), 30 states have return successors, (249), 247 states have call predecessors, (249), 249 states have call successors, (249) [2021-11-02 23:10:31,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19265 states to 19265 states and 25826 transitions. [2021-11-02 23:10:31,850 INFO L78 Accepts]: Start accepts. Automaton has 19265 states and 25826 transitions. Word has length 118 [2021-11-02 23:10:31,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:10:31,851 INFO L470 AbstractCegarLoop]: Abstraction has 19265 states and 25826 transitions. [2021-11-02 23:10:31,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:10:31,852 INFO L276 IsEmpty]: Start isEmpty. Operand 19265 states and 25826 transitions. [2021-11-02 23:10:31,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-02 23:10:31,855 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:10:31,855 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-02 23:10:31,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 23:10:31,856 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-02 23:10:31,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:10:31,857 INFO L85 PathProgramCache]: Analyzing trace with hash -388310239, now seen corresponding path program 1 times [2021-11-02 23:10:31,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:10:31,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188087365] [2021-11-02 23:10:31,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:10:31,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:10:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:10:32,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:10:32,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:10:32,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188087365] [2021-11-02 23:10:32,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188087365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:10:32,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:10:32,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:10:32,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140339826] [2021-11-02 23:10:32,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:10:32,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:10:32,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:10:32,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:10:32,410 INFO L87 Difference]: Start difference. First operand 19265 states and 25826 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:10:35,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:10:35,563 INFO L93 Difference]: Finished difference Result 41738 states and 56037 transitions. [2021-11-02 23:10:35,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:10:35,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-11-02 23:10:35,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:10:35,637 INFO L225 Difference]: With dead ends: 41738 [2021-11-02 23:10:35,637 INFO L226 Difference]: Without dead ends: 22669 [2021-11-02 23:10:35,687 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:10:35,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22669 states. [2021-11-02 23:10:36,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22669 to 22633. [2021-11-02 23:10:36,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22633 states, 22252 states have (on average 1.3387111270896999) internal successors, (29789), 22299 states have internal predecessors, (29789), 295 states have call successors, (295), 40 states have call predecessors, (295), 40 states have return successors, (295), 293 states have call predecessors, (295), 295 states have call successors, (295) [2021-11-02 23:10:36,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22633 states to 22633 states and 30379 transitions. [2021-11-02 23:10:36,576 INFO L78 Accepts]: Start accepts. Automaton has 22633 states and 30379 transitions. Word has length 135 [2021-11-02 23:10:36,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:10:36,578 INFO L470 AbstractCegarLoop]: Abstraction has 22633 states and 30379 transitions. [2021-11-02 23:10:36,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:10:36,578 INFO L276 IsEmpty]: Start isEmpty. Operand 22633 states and 30379 transitions. [2021-11-02 23:10:36,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-02 23:10:36,585 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:10:36,587 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:10:36,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 23:10:36,588 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-02 23:10:36,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:10:36,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1221308200, now seen corresponding path program 1 times [2021-11-02 23:10:36,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:10:36,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618082844] [2021-11-02 23:10:36,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:10:36,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:10:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:10:37,181 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 23:10:37,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:10:37,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618082844] [2021-11-02 23:10:37,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618082844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:10:37,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:10:37,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:10:37,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666260887] [2021-11-02 23:10:37,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:10:37,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:10:37,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:10:37,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:10:37,184 INFO L87 Difference]: Start difference. First operand 22633 states and 30379 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:10:40,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:10:40,243 INFO L93 Difference]: Finished difference Result 48466 states and 65127 transitions. [2021-11-02 23:10:40,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:10:40,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-11-02 23:10:40,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:10:40,333 INFO L225 Difference]: With dead ends: 48466 [2021-11-02 23:10:40,333 INFO L226 Difference]: Without dead ends: 26029 [2021-11-02 23:10:40,374 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:10:40,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26029 states. [2021-11-02 23:10:41,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26029 to 25993. [2021-11-02 23:10:41,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25993 states, 25556 states have (on average 1.339881045547034) internal successors, (34242), 25603 states have internal predecessors, (34242), 341 states have call successors, (341), 50 states have call predecessors, (341), 50 states have return successors, (341), 339 states have call predecessors, (341), 341 states have call successors, (341) [2021-11-02 23:10:41,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25993 states to 25993 states and 34924 transitions. [2021-11-02 23:10:41,421 INFO L78 Accepts]: Start accepts. Automaton has 25993 states and 34924 transitions. Word has length 174 [2021-11-02 23:10:41,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:10:41,422 INFO L470 AbstractCegarLoop]: Abstraction has 25993 states and 34924 transitions. [2021-11-02 23:10:41,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:10:41,422 INFO L276 IsEmpty]: Start isEmpty. Operand 25993 states and 34924 transitions. [2021-11-02 23:10:41,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-02 23:10:41,427 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:10:41,428 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:10:41,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 23:10:41,428 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-02 23:10:41,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:10:41,429 INFO L85 PathProgramCache]: Analyzing trace with hash 711835110, now seen corresponding path program 1 times [2021-11-02 23:10:41,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:10:41,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400673531] [2021-11-02 23:10:41,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:10:41,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:10:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:10:41,885 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 23:10:41,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:10:41,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400673531] [2021-11-02 23:10:41,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400673531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:10:41,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:10:41,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:10:41,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791883918] [2021-11-02 23:10:41,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:10:41,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:10:41,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:10:41,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:10:41,888 INFO L87 Difference]: Start difference. First operand 25993 states and 34924 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:10:45,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:10:45,018 INFO L93 Difference]: Finished difference Result 55406 states and 74518 transitions. [2021-11-02 23:10:45,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:10:45,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-11-02 23:10:45,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:10:45,127 INFO L225 Difference]: With dead ends: 55406 [2021-11-02 23:10:45,127 INFO L226 Difference]: Without dead ends: 29609 [2021-11-02 23:10:45,294 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:10:45,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29609 states. [2021-11-02 23:10:46,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29609 to 29573. [2021-11-02 23:10:46,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29573 states, 29051 states have (on average 1.3408144297958762) internal successors, (38952), 29098 states have internal predecessors, (38952), 406 states have call successors, (406), 70 states have call predecessors, (406), 70 states have return successors, (406), 404 states have call predecessors, (406), 406 states have call successors, (406) [2021-11-02 23:10:46,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29573 states to 29573 states and 39764 transitions. [2021-11-02 23:10:46,165 INFO L78 Accepts]: Start accepts. Automaton has 29573 states and 39764 transitions. Word has length 174 [2021-11-02 23:10:46,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:10:46,166 INFO L470 AbstractCegarLoop]: Abstraction has 29573 states and 39764 transitions. [2021-11-02 23:10:46,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:10:46,166 INFO L276 IsEmpty]: Start isEmpty. Operand 29573 states and 39764 transitions. [2021-11-02 23:10:46,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-02 23:10:46,173 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:10:46,173 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:10:46,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 23:10:46,174 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-02 23:10:46,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:10:46,175 INFO L85 PathProgramCache]: Analyzing trace with hash 206494537, now seen corresponding path program 1 times [2021-11-02 23:10:46,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:10:46,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207221490] [2021-11-02 23:10:46,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:10:46,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:10:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:10:46,637 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-02 23:10:46,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:10:46,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207221490] [2021-11-02 23:10:46,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207221490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:10:46,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:10:46,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:10:46,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131557206] [2021-11-02 23:10:46,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:10:46,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:10:46,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:10:46,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:10:46,641 INFO L87 Difference]: Start difference. First operand 29573 states and 39764 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:10:49,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:10:49,936 INFO L93 Difference]: Finished difference Result 62348 states and 83901 transitions. [2021-11-02 23:10:49,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:10:49,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2021-11-02 23:10:49,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:10:50,059 INFO L225 Difference]: With dead ends: 62348 [2021-11-02 23:10:50,060 INFO L226 Difference]: Without dead ends: 32971 [2021-11-02 23:10:50,121 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:10:50,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32971 states. [2021-11-02 23:10:51,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32971 to 32935. [2021-11-02 23:10:51,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32935 states, 32357 states have (on average 1.3415026114905584) internal successors, (43407), 32404 states have internal predecessors, (43407), 452 states have call successors, (452), 80 states have call predecessors, (452), 80 states have return successors, (452), 450 states have call predecessors, (452), 452 states have call successors, (452) [2021-11-02 23:10:51,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32935 states to 32935 states and 44311 transitions. [2021-11-02 23:10:51,175 INFO L78 Accepts]: Start accepts. Automaton has 32935 states and 44311 transitions. Word has length 210 [2021-11-02 23:10:51,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:10:51,176 INFO L470 AbstractCegarLoop]: Abstraction has 32935 states and 44311 transitions. [2021-11-02 23:10:51,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:10:51,176 INFO L276 IsEmpty]: Start isEmpty. Operand 32935 states and 44311 transitions. [2021-11-02 23:10:51,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-02 23:10:51,184 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:10:51,184 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:10:51,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 23:10:51,184 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-02 23:10:51,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:10:51,185 INFO L85 PathProgramCache]: Analyzing trace with hash -302978553, now seen corresponding path program 1 times [2021-11-02 23:10:51,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:10:51,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618167131] [2021-11-02 23:10:51,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:10:51,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:10:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:10:51,861 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-02 23:10:51,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:10:51,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618167131] [2021-11-02 23:10:51,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618167131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:10:51,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:10:51,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:10:51,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118679462] [2021-11-02 23:10:51,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:10:51,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:10:51,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:10:51,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:10:51,865 INFO L87 Difference]: Start difference. First operand 32935 states and 44311 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:10:54,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:10:54,849 INFO L93 Difference]: Finished difference Result 69074 states and 92999 transitions. [2021-11-02 23:10:54,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:10:54,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2021-11-02 23:10:54,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:10:54,949 INFO L225 Difference]: With dead ends: 69074 [2021-11-02 23:10:54,949 INFO L226 Difference]: Without dead ends: 36335 [2021-11-02 23:10:55,009 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:10:55,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36335 states. [2021-11-02 23:10:55,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36335 to 36299. [2021-11-02 23:10:56,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36299 states, 35665 states have (on average 1.342044020748633) internal successors, (47864), 35712 states have internal predecessors, (47864), 498 states have call successors, (498), 90 states have call predecessors, (498), 90 states have return successors, (498), 496 states have call predecessors, (498), 498 states have call successors, (498) [2021-11-02 23:10:56,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36299 states to 36299 states and 48860 transitions. [2021-11-02 23:10:56,127 INFO L78 Accepts]: Start accepts. Automaton has 36299 states and 48860 transitions. Word has length 210 [2021-11-02 23:10:56,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:10:56,130 INFO L470 AbstractCegarLoop]: Abstraction has 36299 states and 48860 transitions. [2021-11-02 23:10:56,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:10:56,131 INFO L276 IsEmpty]: Start isEmpty. Operand 36299 states and 48860 transitions. [2021-11-02 23:10:56,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-02 23:10:56,151 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:10:56,151 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:10:56,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 23:10:56,152 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-02 23:10:56,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:10:56,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1908348413, now seen corresponding path program 1 times [2021-11-02 23:10:56,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:10:56,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203235252] [2021-11-02 23:10:56,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:10:56,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:10:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:10:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-02 23:10:56,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:10:56,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203235252] [2021-11-02 23:10:56,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203235252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:10:56,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:10:56,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 23:10:56,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051337695] [2021-11-02 23:10:56,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:10:56,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:10:56,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:10:56,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:10:56,993 INFO L87 Difference]: Start difference. First operand 36299 states and 48860 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:10:58,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:10:58,026 INFO L93 Difference]: Finished difference Result 72402 states and 97500 transitions. [2021-11-02 23:10:58,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:10:58,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2021-11-02 23:10:58,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:10:58,118 INFO L225 Difference]: With dead ends: 72402 [2021-11-02 23:10:58,119 INFO L226 Difference]: Without dead ends: 36299 [2021-11-02 23:10:58,193 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:10:58,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36299 states. [2021-11-02 23:10:59,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36299 to 36299. [2021-11-02 23:10:59,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36299 states, 35665 states have (on average 1.3375017524183372) internal successors, (47702), 35712 states have internal predecessors, (47702), 498 states have call successors, (498), 90 states have call predecessors, (498), 90 states have return successors, (498), 496 states have call predecessors, (498), 498 states have call successors, (498) [2021-11-02 23:10:59,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36299 states to 36299 states and 48698 transitions. [2021-11-02 23:10:59,478 INFO L78 Accepts]: Start accepts. Automaton has 36299 states and 48698 transitions. Word has length 232 [2021-11-02 23:10:59,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:10:59,479 INFO L470 AbstractCegarLoop]: Abstraction has 36299 states and 48698 transitions. [2021-11-02 23:10:59,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:10:59,480 INFO L276 IsEmpty]: Start isEmpty. Operand 36299 states and 48698 transitions. [2021-11-02 23:10:59,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-02 23:10:59,490 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:10:59,491 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:10:59,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 23:10:59,491 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-02 23:10:59,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:10:59,492 INFO L85 PathProgramCache]: Analyzing trace with hash 970706135, now seen corresponding path program 1 times [2021-11-02 23:10:59,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:10:59,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340648603] [2021-11-02 23:10:59,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:10:59,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:10:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:00,141 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-02 23:11:00,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:00,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340648603] [2021-11-02 23:11:00,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340648603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:11:00,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:11:00,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:11:00,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643992657] [2021-11-02 23:11:00,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:11:00,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:00,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:11:00,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:11:00,145 INFO L87 Difference]: Start difference. First operand 36299 states and 48698 transitions. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:02,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:02,021 INFO L93 Difference]: Finished difference Result 72402 states and 97176 transitions. [2021-11-02 23:11:02,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:11:02,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2021-11-02 23:11:02,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:02,115 INFO L225 Difference]: With dead ends: 72402 [2021-11-02 23:11:02,115 INFO L226 Difference]: Without dead ends: 36299 [2021-11-02 23:11:02,177 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:11:02,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36299 states. [2021-11-02 23:11:03,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36299 to 36299. [2021-11-02 23:11:03,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36299 states, 35665 states have (on average 1.3329594840880414) internal successors, (47540), 35712 states have internal predecessors, (47540), 498 states have call successors, (498), 90 states have call predecessors, (498), 90 states have return successors, (498), 496 states have call predecessors, (498), 498 states have call successors, (498) [2021-11-02 23:11:03,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36299 states to 36299 states and 48536 transitions. [2021-11-02 23:11:03,319 INFO L78 Accepts]: Start accepts. Automaton has 36299 states and 48536 transitions. Word has length 233 [2021-11-02 23:11:03,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:03,319 INFO L470 AbstractCegarLoop]: Abstraction has 36299 states and 48536 transitions. [2021-11-02 23:11:03,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:03,319 INFO L276 IsEmpty]: Start isEmpty. Operand 36299 states and 48536 transitions. [2021-11-02 23:11:03,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-02 23:11:03,330 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:03,330 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:11:03,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 23:11:03,331 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-02 23:11:03,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:03,332 INFO L85 PathProgramCache]: Analyzing trace with hash 27232862, now seen corresponding path program 1 times [2021-11-02 23:11:03,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:03,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201984513] [2021-11-02 23:11:03,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:03,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:04,005 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-02 23:11:04,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:04,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201984513] [2021-11-02 23:11:04,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201984513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:11:04,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:11:04,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:11:04,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525429436] [2021-11-02 23:11:04,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:11:04,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:04,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:11:04,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:11:04,009 INFO L87 Difference]: Start difference. First operand 36299 states and 48536 transitions. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:06,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:06,085 INFO L93 Difference]: Finished difference Result 72402 states and 96852 transitions. [2021-11-02 23:11:06,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:11:06,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2021-11-02 23:11:06,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:06,174 INFO L225 Difference]: With dead ends: 72402 [2021-11-02 23:11:06,175 INFO L226 Difference]: Without dead ends: 36299 [2021-11-02 23:11:06,230 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:11:06,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36299 states. [2021-11-02 23:11:07,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36299 to 36299. [2021-11-02 23:11:07,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36299 states, 35665 states have (on average 1.3284172157577456) internal successors, (47378), 35712 states have internal predecessors, (47378), 498 states have call successors, (498), 90 states have call predecessors, (498), 90 states have return successors, (498), 496 states have call predecessors, (498), 498 states have call successors, (498) [2021-11-02 23:11:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36299 states to 36299 states and 48374 transitions. [2021-11-02 23:11:07,633 INFO L78 Accepts]: Start accepts. Automaton has 36299 states and 48374 transitions. Word has length 234 [2021-11-02 23:11:07,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:07,634 INFO L470 AbstractCegarLoop]: Abstraction has 36299 states and 48374 transitions. [2021-11-02 23:11:07,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:07,634 INFO L276 IsEmpty]: Start isEmpty. Operand 36299 states and 48374 transitions. [2021-11-02 23:11:07,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-02 23:11:07,643 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:07,643 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:11:07,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 23:11:07,644 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-02 23:11:07,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:07,645 INFO L85 PathProgramCache]: Analyzing trace with hash 844481426, now seen corresponding path program 1 times [2021-11-02 23:11:07,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:07,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323783671] [2021-11-02 23:11:07,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:07,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:08,313 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-02 23:11:08,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:08,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323783671] [2021-11-02 23:11:08,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323783671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:11:08,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:11:08,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:11:08,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412631249] [2021-11-02 23:11:08,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:11:08,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:08,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:11:08,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:11:08,318 INFO L87 Difference]: Start difference. First operand 36299 states and 48374 transitions. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:10,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:10,534 INFO L93 Difference]: Finished difference Result 72402 states and 96528 transitions. [2021-11-02 23:11:10,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:11:10,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2021-11-02 23:11:10,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:10,618 INFO L225 Difference]: With dead ends: 72402 [2021-11-02 23:11:10,619 INFO L226 Difference]: Without dead ends: 36299 [2021-11-02 23:11:10,691 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:11:10,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36299 states.