./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 695981a417316c4c07ccb52b1c4d12f1832a3ea99763b6fdb28c03b28d3203ad --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:26:17,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:26:17,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:26:17,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:26:17,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:26:17,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:26:17,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:26:17,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:26:17,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:26:17,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:26:17,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:26:17,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:26:17,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:26:17,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:26:17,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:26:17,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:26:17,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:26:17,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:26:17,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:26:17,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:26:17,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:26:17,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:26:17,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:26:17,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:26:17,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:26:17,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:26:17,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:26:17,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:26:17,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:26:17,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:26:17,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:26:17,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:26:17,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:26:17,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:26:17,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:26:17,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:26:17,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:26:17,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:26:17,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:26:17,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:26:17,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:26:17,734 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 17:26:17,751 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:26:17,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:26:17,752 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:26:17,752 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:26:17,752 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:26:17,753 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:26:17,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:26:17,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:26:17,753 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:26:17,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:26:17,754 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:26:17,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:26:17,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:26:17,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:26:17,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:26:17,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:26:17,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:26:17,754 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:26:17,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:26:17,755 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:26:17,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:26:17,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:26:17,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:26:17,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:26:17,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:26:17,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:26:17,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:26:17,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:26:17,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:26:17,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:26:17,756 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:26:17,756 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:26:17,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:26:17,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:26:17,757 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_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 695981a417316c4c07ccb52b1c4d12f1832a3ea99763b6fdb28c03b28d3203ad [2021-12-06 17:26:17,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:26:17,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:26:17,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:26:17,967 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:26:17,968 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:26:17,969 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c [2021-12-06 17:26:18,016 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/data/d194fd3c6/0f62e1465b2b432092b17a12cdc885bf/FLAGbbda9ae05 [2021-12-06 17:26:18,713 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:26:18,714 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c [2021-12-06 17:26:18,748 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/data/d194fd3c6/0f62e1465b2b432092b17a12cdc885bf/FLAGbbda9ae05 [2021-12-06 17:26:19,074 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/data/d194fd3c6/0f62e1465b2b432092b17a12cdc885bf [2021-12-06 17:26:19,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:26:19,085 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:26:19,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:26:19,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:26:19,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:26:19,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:26:19" (1/1) ... [2021-12-06 17:26:19,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4105e6f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:26:19, skipping insertion in model container [2021-12-06 17:26:19,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:26:19" (1/1) ... [2021-12-06 17:26:19,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:26:19,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:26:20,626 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c[378560,378573] [2021-12-06 17:26:20,651 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c[383339,383352] [2021-12-06 17:26:20,867 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:26:20,874 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:26:21,658 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c[378560,378573] [2021-12-06 17:26:21,663 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c[383339,383352] [2021-12-06 17:26:21,677 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:26:21,745 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:26:21,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:26:21 WrapperNode [2021-12-06 17:26:21,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:26:21,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:26:21,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:26:21,746 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:26:21,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:26:21" (1/1) ... [2021-12-06 17:26:21,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:26:21" (1/1) ... [2021-12-06 17:26:22,159 INFO L137 Inliner]: procedures = 62, calls = 69, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 13030 [2021-12-06 17:26:22,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:26:22,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:26:22,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:26:22,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:26:22,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:26:21" (1/1) ... [2021-12-06 17:26:22,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:26:21" (1/1) ... [2021-12-06 17:26:22,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:26:21" (1/1) ... [2021-12-06 17:26:22,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:26:21" (1/1) ... [2021-12-06 17:26:22,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:26:21" (1/1) ... [2021-12-06 17:26:22,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:26:21" (1/1) ... [2021-12-06 17:26:22,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:26:21" (1/1) ... [2021-12-06 17:26:22,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:26:22,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:26:22,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:26:22,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:26:22,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:26:21" (1/1) ... [2021-12-06 17:26:22,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:26:22,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:26:22,603 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:26:22,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:26:22,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:26:22,632 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-06 17:26:22,632 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-06 17:26:22,632 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-06 17:26:22,632 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-06 17:26:22,632 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-06 17:26:22,632 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-06 17:26:22,632 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-06 17:26:22,632 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-06 17:26:22,632 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-06 17:26:22,633 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-06 17:26:22,633 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-06 17:26:22,633 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-06 17:26:22,633 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-06 17:26:22,633 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-06 17:26:22,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:26:22,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:26:22,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:26:22,715 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:26:22,716 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:26:27,002 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:26:27,031 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:26:27,031 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-12-06 17:26:27,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:26:27 BoogieIcfgContainer [2021-12-06 17:26:27,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:26:27,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:26:27,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:26:27,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:26:27,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:26:19" (1/3) ... [2021-12-06 17:26:27,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d1581dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:26:27, skipping insertion in model container [2021-12-06 17:26:27,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:26:21" (2/3) ... [2021-12-06 17:26:27,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d1581dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:26:27, skipping insertion in model container [2021-12-06 17:26:27,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:26:27" (3/3) ... [2021-12-06 17:26:27,042 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.09.cil-2.c [2021-12-06 17:26:27,047 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:26:27,048 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 17:26:27,095 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:26:27,100 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 17:26:27,100 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 17:26:27,156 INFO L276 IsEmpty]: Start isEmpty. Operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-06 17:26:27,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 17:26:27,172 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:26:27,173 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:26:27,174 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:26:27,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:26:27,178 INFO L85 PathProgramCache]: Analyzing trace with hash 416596476, now seen corresponding path program 1 times [2021-12-06 17:26:27,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:26:27,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186450226] [2021-12-06 17:26:27,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:26:27,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:26:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:27,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:26:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:27,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:26:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:27,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:26:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:27,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:26:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:27,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:26:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:27,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:26:27,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:26:27,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186450226] [2021-12-06 17:26:27,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186450226] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:26:27,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:26:27,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:26:27,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696085493] [2021-12-06 17:26:27,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:26:27,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:26:27,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:26:27,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:26:27,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:26:27,584 INFO L87 Difference]: Start difference. First operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:28,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:26:28,605 INFO L93 Difference]: Finished difference Result 5096 states and 9373 transitions. [2021-12-06 17:26:28,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:26:28,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-06 17:26:28,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:26:28,632 INFO L225 Difference]: With dead ends: 5096 [2021-12-06 17:26:28,633 INFO L226 Difference]: Without dead ends: 2539 [2021-12-06 17:26:28,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:26:28,643 INFO L933 BasicCegarLoop]: 4557 mSDtfsCounter, 821 mSDsluCounter, 12422 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 16979 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:26:28,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 16979 Invalid, 605 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 17:26:28,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2021-12-06 17:26:28,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2430. [2021-12-06 17:26:28,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 2397 states have (on average 1.8327075511055486) internal successors, (4393), 2400 states have internal predecessors, (4393), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-06 17:26:28,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 4441 transitions. [2021-12-06 17:26:28,770 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 4441 transitions. Word has length 146 [2021-12-06 17:26:28,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:26:28,771 INFO L470 AbstractCegarLoop]: Abstraction has 2430 states and 4441 transitions. [2021-12-06 17:26:28,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:28,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 4441 transitions. [2021-12-06 17:26:28,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 17:26:28,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:26:28,775 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:26:28,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:26:28,775 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:26:28,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:26:28,776 INFO L85 PathProgramCache]: Analyzing trace with hash -982357126, now seen corresponding path program 1 times [2021-12-06 17:26:28,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:26:28,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057607259] [2021-12-06 17:26:28,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:26:28,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:26:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:28,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:26:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:28,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:26:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:28,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:26:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:28,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:26:28,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:28,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:26:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:26:28,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:26:28,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057607259] [2021-12-06 17:26:28,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057607259] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:26:28,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:26:28,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 17:26:28,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588023993] [2021-12-06 17:26:28,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:26:28,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:26:28,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:26:28,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:26:28,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:26:28,957 INFO L87 Difference]: Start difference. First operand 2430 states and 4441 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:30,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:26:30,588 INFO L93 Difference]: Finished difference Result 3244 states and 5752 transitions. [2021-12-06 17:26:30,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:26:30,588 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-06 17:26:30,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:26:30,602 INFO L225 Difference]: With dead ends: 3244 [2021-12-06 17:26:30,602 INFO L226 Difference]: Without dead ends: 2952 [2021-12-06 17:26:30,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:26:30,605 INFO L933 BasicCegarLoop]: 4528 mSDtfsCounter, 5181 mSDsluCounter, 12720 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5197 SdHoareTripleChecker+Valid, 17248 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:26:30,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5197 Valid, 17248 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 17:26:30,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2021-12-06 17:26:30,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2733. [2021-12-06 17:26:30,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2675 states have (on average 1.8078504672897195) internal successors, (4836), 2679 states have internal predecessors, (4836), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2021-12-06 17:26:30,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4923 transitions. [2021-12-06 17:26:30,683 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4923 transitions. Word has length 146 [2021-12-06 17:26:30,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:26:30,684 INFO L470 AbstractCegarLoop]: Abstraction has 2733 states and 4923 transitions. [2021-12-06 17:26:30,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:30,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4923 transitions. [2021-12-06 17:26:30,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 17:26:30,686 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:26:30,686 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:26:30,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 17:26:30,686 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:26:30,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:26:30,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1511144566, now seen corresponding path program 1 times [2021-12-06 17:26:30,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:26:30,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263509058] [2021-12-06 17:26:30,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:26:30,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:26:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:30,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:26:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:30,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:26:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:30,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:26:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:30,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:26:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:30,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:26:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:30,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:26:30,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:26:30,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263509058] [2021-12-06 17:26:30,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263509058] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:26:30,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:26:30,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:26:30,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500841138] [2021-12-06 17:26:30,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:26:30,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:26:30,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:26:30,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:26:30,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:26:30,831 INFO L87 Difference]: Start difference. First operand 2733 states and 4923 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:31,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:26:31,773 INFO L93 Difference]: Finished difference Result 3561 states and 6264 transitions. [2021-12-06 17:26:31,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:26:31,774 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-06 17:26:31,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:26:31,788 INFO L225 Difference]: With dead ends: 3561 [2021-12-06 17:26:31,788 INFO L226 Difference]: Without dead ends: 2966 [2021-12-06 17:26:31,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:26:31,792 INFO L933 BasicCegarLoop]: 4477 mSDtfsCounter, 4977 mSDsluCounter, 12487 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4994 SdHoareTripleChecker+Valid, 16964 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:26:31,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4994 Valid, 16964 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 17:26:31,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2021-12-06 17:26:31,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 2733. [2021-12-06 17:26:31,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2675 states have (on average 1.8071028037383177) internal successors, (4834), 2679 states have internal predecessors, (4834), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2021-12-06 17:26:31,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4921 transitions. [2021-12-06 17:26:31,881 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4921 transitions. Word has length 146 [2021-12-06 17:26:31,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:26:31,881 INFO L470 AbstractCegarLoop]: Abstraction has 2733 states and 4921 transitions. [2021-12-06 17:26:31,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:31,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4921 transitions. [2021-12-06 17:26:31,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 17:26:31,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:26:31,884 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:26:31,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 17:26:31,884 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:26:31,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:26:31,885 INFO L85 PathProgramCache]: Analyzing trace with hash 804547960, now seen corresponding path program 1 times [2021-12-06 17:26:31,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:26:31,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515788561] [2021-12-06 17:26:31,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:26:31,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:26:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:31,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:26:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:31,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:26:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:31,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:26:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:32,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:26:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:32,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:26:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:32,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:26:32,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:26:32,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515788561] [2021-12-06 17:26:32,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515788561] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:26:32,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:26:32,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:26:32,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39099325] [2021-12-06 17:26:32,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:26:32,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:26:32,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:26:32,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:26:32,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:26:32,026 INFO L87 Difference]: Start difference. First operand 2733 states and 4921 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:33,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:26:33,800 INFO L93 Difference]: Finished difference Result 3969 states and 6909 transitions. [2021-12-06 17:26:33,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:26:33,800 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-06 17:26:33,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:26:33,815 INFO L225 Difference]: With dead ends: 3969 [2021-12-06 17:26:33,816 INFO L226 Difference]: Without dead ends: 3374 [2021-12-06 17:26:33,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:26:33,819 INFO L933 BasicCegarLoop]: 4763 mSDtfsCounter, 5194 mSDsluCounter, 17461 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5210 SdHoareTripleChecker+Valid, 22224 SdHoareTripleChecker+Invalid, 2465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:26:33,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5210 Valid, 22224 Invalid, 2465 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 17:26:33,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3374 states. [2021-12-06 17:26:33,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3374 to 3016. [2021-12-06 17:26:33,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3016 states, 2933 states have (on average 1.7852028639618138) internal successors, (5236), 2938 states have internal predecessors, (5236), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2021-12-06 17:26:33,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 5361 transitions. [2021-12-06 17:26:33,908 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 5361 transitions. Word has length 146 [2021-12-06 17:26:33,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:26:33,908 INFO L470 AbstractCegarLoop]: Abstraction has 3016 states and 5361 transitions. [2021-12-06 17:26:33,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:33,909 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 5361 transitions. [2021-12-06 17:26:33,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 17:26:33,910 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:26:33,911 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:26:33,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 17:26:33,911 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:26:33,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:26:33,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1666381562, now seen corresponding path program 1 times [2021-12-06 17:26:33,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:26:33,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387651057] [2021-12-06 17:26:33,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:26:33,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:26:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:33,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:26:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:33,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:26:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:33,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:26:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:34,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:26:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:34,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:26:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:34,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:26:34,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:26:34,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387651057] [2021-12-06 17:26:34,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387651057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:26:34,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:26:34,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:26:34,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235672564] [2021-12-06 17:26:34,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:26:34,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:26:34,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:26:34,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:26:34,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:26:34,011 INFO L87 Difference]: Start difference. First operand 3016 states and 5361 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:35,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:26:35,862 INFO L93 Difference]: Finished difference Result 5038 states and 8605 transitions. [2021-12-06 17:26:35,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:26:35,863 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-06 17:26:35,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:26:35,885 INFO L225 Difference]: With dead ends: 5038 [2021-12-06 17:26:35,885 INFO L226 Difference]: Without dead ends: 4160 [2021-12-06 17:26:35,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:26:35,889 INFO L933 BasicCegarLoop]: 4756 mSDtfsCounter, 5190 mSDsluCounter, 17457 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5206 SdHoareTripleChecker+Valid, 22213 SdHoareTripleChecker+Invalid, 2450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:26:35,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5206 Valid, 22213 Invalid, 2450 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 17:26:35,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4160 states. [2021-12-06 17:26:35,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4160 to 3585. [2021-12-06 17:26:35,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3452 states have (on average 1.7511587485515643) internal successors, (6045), 3459 states have internal predecessors, (6045), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-06 17:26:35,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 6250 transitions. [2021-12-06 17:26:35,995 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 6250 transitions. Word has length 146 [2021-12-06 17:26:35,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:26:35,995 INFO L470 AbstractCegarLoop]: Abstraction has 3585 states and 6250 transitions. [2021-12-06 17:26:35,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:35,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 6250 transitions. [2021-12-06 17:26:35,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 17:26:35,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:26:35,998 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:26:35,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 17:26:35,998 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:26:35,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:26:35,998 INFO L85 PathProgramCache]: Analyzing trace with hash -384027336, now seen corresponding path program 1 times [2021-12-06 17:26:35,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:26:35,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599974476] [2021-12-06 17:26:35,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:26:35,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:26:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:36,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:26:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:36,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:26:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:36,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:26:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:36,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:26:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:36,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:26:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:36,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:26:36,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:26:36,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599974476] [2021-12-06 17:26:36,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599974476] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:26:36,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:26:36,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:26:36,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370875728] [2021-12-06 17:26:36,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:26:36,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:26:36,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:26:36,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:26:36,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:26:36,103 INFO L87 Difference]: Start difference. First operand 3585 states and 6250 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:36,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:26:36,965 INFO L93 Difference]: Finished difference Result 5595 states and 9483 transitions. [2021-12-06 17:26:36,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:26:36,965 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-06 17:26:36,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:26:36,982 INFO L225 Difference]: With dead ends: 5595 [2021-12-06 17:26:36,982 INFO L226 Difference]: Without dead ends: 4148 [2021-12-06 17:26:36,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:26:36,987 INFO L933 BasicCegarLoop]: 4464 mSDtfsCounter, 4974 mSDsluCounter, 12486 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4991 SdHoareTripleChecker+Valid, 16950 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:26:36,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4991 Valid, 16950 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 17:26:36,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2021-12-06 17:26:37,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 3585. [2021-12-06 17:26:37,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3452 states have (on average 1.749710312862109) internal successors, (6040), 3459 states have internal predecessors, (6040), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-06 17:26:37,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 6245 transitions. [2021-12-06 17:26:37,087 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 6245 transitions. Word has length 146 [2021-12-06 17:26:37,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:26:37,087 INFO L470 AbstractCegarLoop]: Abstraction has 3585 states and 6245 transitions. [2021-12-06 17:26:37,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:37,087 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 6245 transitions. [2021-12-06 17:26:37,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 17:26:37,089 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:26:37,089 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:26:37,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 17:26:37,089 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:26:37,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:26:37,090 INFO L85 PathProgramCache]: Analyzing trace with hash 104019770, now seen corresponding path program 1 times [2021-12-06 17:26:37,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:26:37,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279305398] [2021-12-06 17:26:37,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:26:37,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:26:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:37,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:26:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:37,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:26:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:37,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:26:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:37,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:26:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:37,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:26:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:37,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:26:37,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:26:37,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279305398] [2021-12-06 17:26:37,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279305398] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:26:37,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:26:37,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:26:37,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85791311] [2021-12-06 17:26:37,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:26:37,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:26:37,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:26:37,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:26:37,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:26:37,185 INFO L87 Difference]: Start difference. First operand 3585 states and 6245 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:38,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:26:38,177 INFO L93 Difference]: Finished difference Result 5589 states and 9456 transitions. [2021-12-06 17:26:38,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:26:38,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-06 17:26:38,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:26:38,199 INFO L225 Difference]: With dead ends: 5589 [2021-12-06 17:26:38,199 INFO L226 Difference]: Without dead ends: 4142 [2021-12-06 17:26:38,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:26:38,205 INFO L933 BasicCegarLoop]: 4432 mSDtfsCounter, 4895 mSDsluCounter, 16607 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4912 SdHoareTripleChecker+Valid, 21039 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:26:38,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4912 Valid, 21039 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 17:26:38,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4142 states. [2021-12-06 17:26:38,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4142 to 3585. [2021-12-06 17:26:38,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3452 states have (on average 1.7482618771726535) internal successors, (6035), 3459 states have internal predecessors, (6035), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-06 17:26:38,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 6240 transitions. [2021-12-06 17:26:38,319 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 6240 transitions. Word has length 146 [2021-12-06 17:26:38,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:26:38,319 INFO L470 AbstractCegarLoop]: Abstraction has 3585 states and 6240 transitions. [2021-12-06 17:26:38,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:38,320 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 6240 transitions. [2021-12-06 17:26:38,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 17:26:38,321 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:26:38,321 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:26:38,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 17:26:38,322 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:26:38,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:26:38,322 INFO L85 PathProgramCache]: Analyzing trace with hash -988615432, now seen corresponding path program 1 times [2021-12-06 17:26:38,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:26:38,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912435719] [2021-12-06 17:26:38,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:26:38,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:26:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:38,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:26:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:38,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:26:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:38,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:26:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:38,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:26:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:38,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:26:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:26:38,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:26:38,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912435719] [2021-12-06 17:26:38,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912435719] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:26:38,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:26:38,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:26:38,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422028399] [2021-12-06 17:26:38,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:26:38,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:26:38,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:26:38,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:26:38,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:26:38,427 INFO L87 Difference]: Start difference. First operand 3585 states and 6240 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:39,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:26:39,371 INFO L93 Difference]: Finished difference Result 5583 states and 9429 transitions. [2021-12-06 17:26:39,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:26:39,371 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-06 17:26:39,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:26:39,383 INFO L225 Difference]: With dead ends: 5583 [2021-12-06 17:26:39,383 INFO L226 Difference]: Without dead ends: 4136 [2021-12-06 17:26:39,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:26:39,387 INFO L933 BasicCegarLoop]: 4456 mSDtfsCounter, 4839 mSDsluCounter, 16608 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4856 SdHoareTripleChecker+Valid, 21064 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:26:39,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4856 Valid, 21064 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 17:26:39,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4136 states. [2021-12-06 17:26:39,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4136 to 3585. [2021-12-06 17:26:39,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3452 states have (on average 1.7468134414831982) internal successors, (6030), 3459 states have internal predecessors, (6030), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-06 17:26:39,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 6235 transitions. [2021-12-06 17:26:39,487 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 6235 transitions. Word has length 146 [2021-12-06 17:26:39,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:26:39,487 INFO L470 AbstractCegarLoop]: Abstraction has 3585 states and 6235 transitions. [2021-12-06 17:26:39,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:39,487 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 6235 transitions. [2021-12-06 17:26:39,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 17:26:39,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:26:39,489 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:26:39,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 17:26:39,489 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:26:39,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:26:39,489 INFO L85 PathProgramCache]: Analyzing trace with hash 2024179578, now seen corresponding path program 1 times [2021-12-06 17:26:39,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:26:39,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467310602] [2021-12-06 17:26:39,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:26:39,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:26:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:39,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:26:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:39,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:26:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:39,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:26:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:39,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:26:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:39,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:26:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:39,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:26:39,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:26:39,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467310602] [2021-12-06 17:26:39,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467310602] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:26:39,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:26:39,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:26:39,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273853355] [2021-12-06 17:26:39,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:26:39,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:26:39,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:26:39,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:26:39,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:26:39,583 INFO L87 Difference]: Start difference. First operand 3585 states and 6235 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:41,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:26:41,418 INFO L93 Difference]: Finished difference Result 7089 states and 11766 transitions. [2021-12-06 17:26:41,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:26:41,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-06 17:26:41,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:26:41,428 INFO L225 Difference]: With dead ends: 7089 [2021-12-06 17:26:41,428 INFO L226 Difference]: Without dead ends: 5642 [2021-12-06 17:26:41,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:26:41,433 INFO L933 BasicCegarLoop]: 4733 mSDtfsCounter, 5168 mSDsluCounter, 17457 mSDsCounter, 0 mSdLazyCounter, 2303 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5184 SdHoareTripleChecker+Valid, 22190 SdHoareTripleChecker+Invalid, 2385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:26:41,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5184 Valid, 22190 Invalid, 2385 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 2303 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 17:26:41,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5642 states. [2021-12-06 17:26:41,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5642 to 4741. [2021-12-06 17:26:41,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4741 states, 4508 states have (on average 1.6987577639751552) internal successors, (7658), 4519 states have internal predecessors, (7658), 169 states have call successors, (169), 55 states have call predecessors, (169), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2021-12-06 17:26:41,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4741 states to 4741 states and 8029 transitions. [2021-12-06 17:26:41,592 INFO L78 Accepts]: Start accepts. Automaton has 4741 states and 8029 transitions. Word has length 146 [2021-12-06 17:26:41,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:26:41,592 INFO L470 AbstractCegarLoop]: Abstraction has 4741 states and 8029 transitions. [2021-12-06 17:26:41,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:41,592 INFO L276 IsEmpty]: Start isEmpty. Operand 4741 states and 8029 transitions. [2021-12-06 17:26:41,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 17:26:41,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:26:41,594 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:26:41,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 17:26:41,595 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:26:41,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:26:41,595 INFO L85 PathProgramCache]: Analyzing trace with hash 181703864, now seen corresponding path program 1 times [2021-12-06 17:26:41,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:26:41,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460987543] [2021-12-06 17:26:41,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:26:41,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:26:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:41,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:26:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:41,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:26:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:41,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:26:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:41,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:26:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:41,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:26:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:41,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:26:41,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:26:41,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460987543] [2021-12-06 17:26:41,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460987543] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:26:41,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:26:41,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:26:41,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915298261] [2021-12-06 17:26:41,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:26:41,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:26:41,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:26:41,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:26:41,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:26:41,687 INFO L87 Difference]: Start difference. First operand 4741 states and 8029 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:43,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:26:43,751 INFO L93 Difference]: Finished difference Result 11231 states and 18258 transitions. [2021-12-06 17:26:43,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:26:43,751 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-06 17:26:43,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:26:43,769 INFO L225 Difference]: With dead ends: 11231 [2021-12-06 17:26:43,769 INFO L226 Difference]: Without dead ends: 8628 [2021-12-06 17:26:43,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:26:43,777 INFO L933 BasicCegarLoop]: 4726 mSDtfsCounter, 5170 mSDsluCounter, 17457 mSDsCounter, 0 mSdLazyCounter, 2292 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5186 SdHoareTripleChecker+Valid, 22183 SdHoareTripleChecker+Invalid, 2377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:26:43,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5186 Valid, 22183 Invalid, 2377 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 2292 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 17:26:43,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8628 states. [2021-12-06 17:26:44,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8628 to 7054. [2021-12-06 17:26:44,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7054 states, 6621 states have (on average 1.6480894124754568) internal successors, (10912), 6640 states have internal predecessors, (10912), 313 states have call successors, (313), 103 states have call predecessors, (313), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2021-12-06 17:26:44,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7054 states to 7054 states and 11633 transitions. [2021-12-06 17:26:44,069 INFO L78 Accepts]: Start accepts. Automaton has 7054 states and 11633 transitions. Word has length 146 [2021-12-06 17:26:44,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:26:44,069 INFO L470 AbstractCegarLoop]: Abstraction has 7054 states and 11633 transitions. [2021-12-06 17:26:44,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:44,070 INFO L276 IsEmpty]: Start isEmpty. Operand 7054 states and 11633 transitions. [2021-12-06 17:26:44,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 17:26:44,073 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:26:44,073 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:26:44,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 17:26:44,074 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:26:44,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:26:44,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1540298822, now seen corresponding path program 1 times [2021-12-06 17:26:44,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:26:44,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720568489] [2021-12-06 17:26:44,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:26:44,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:26:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:44,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:26:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:44,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:26:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:44,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:26:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:44,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:26:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:44,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:26:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:44,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:26:44,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:26:44,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720568489] [2021-12-06 17:26:44,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720568489] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:26:44,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:26:44,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:26:44,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154537074] [2021-12-06 17:26:44,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:26:44,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:26:44,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:26:44,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:26:44,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:26:44,166 INFO L87 Difference]: Start difference. First operand 7054 states and 11633 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:47,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:26:47,200 INFO L93 Difference]: Finished difference Result 21460 states and 34282 transitions. [2021-12-06 17:26:47,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:26:47,201 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-06 17:26:47,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:26:47,235 INFO L225 Difference]: With dead ends: 21460 [2021-12-06 17:26:47,235 INFO L226 Difference]: Without dead ends: 16544 [2021-12-06 17:26:47,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:26:47,249 INFO L933 BasicCegarLoop]: 4854 mSDtfsCounter, 5247 mSDsluCounter, 17446 mSDsCounter, 0 mSdLazyCounter, 2680 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5262 SdHoareTripleChecker+Valid, 22300 SdHoareTripleChecker+Invalid, 2767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:26:47,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5262 Valid, 22300 Invalid, 2767 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [87 Valid, 2680 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-06 17:26:47,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16544 states. [2021-12-06 17:26:47,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16544 to 11504. [2021-12-06 17:26:47,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11504 states, 10687 states have (on average 1.6053148685318612) internal successors, (17156), 10722 states have internal predecessors, (17156), 585 states have call successors, (585), 199 states have call predecessors, (585), 230 states have return successors, (858), 614 states have call predecessors, (858), 583 states have call successors, (858) [2021-12-06 17:26:47,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11504 states to 11504 states and 18599 transitions. [2021-12-06 17:26:47,810 INFO L78 Accepts]: Start accepts. Automaton has 11504 states and 18599 transitions. Word has length 146 [2021-12-06 17:26:47,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:26:47,810 INFO L470 AbstractCegarLoop]: Abstraction has 11504 states and 18599 transitions. [2021-12-06 17:26:47,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:47,811 INFO L276 IsEmpty]: Start isEmpty. Operand 11504 states and 18599 transitions. [2021-12-06 17:26:47,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 17:26:47,815 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:26:47,815 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:26:47,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 17:26:47,816 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:26:47,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:26:47,816 INFO L85 PathProgramCache]: Analyzing trace with hash 388633404, now seen corresponding path program 1 times [2021-12-06 17:26:47,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:26:47,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993258015] [2021-12-06 17:26:47,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:26:47,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:26:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:47,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:26:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:47,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:26:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:47,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:26:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:47,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:26:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:47,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:26:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:47,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:26:47,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:26:47,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993258015] [2021-12-06 17:26:47,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993258015] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:26:47,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:26:47,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:26:47,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355748470] [2021-12-06 17:26:47,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:26:47,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:26:47,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:26:47,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:26:47,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:26:47,913 INFO L87 Difference]: Start difference. First operand 11504 states and 18599 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:51,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:26:51,640 INFO L93 Difference]: Finished difference Result 38948 states and 61842 transitions. [2021-12-06 17:26:51,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:26:51,641 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-06 17:26:51,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:26:51,705 INFO L225 Difference]: With dead ends: 38948 [2021-12-06 17:26:51,705 INFO L226 Difference]: Without dead ends: 29582 [2021-12-06 17:26:51,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:26:51,735 INFO L933 BasicCegarLoop]: 4710 mSDtfsCounter, 5455 mSDsluCounter, 17449 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5481 SdHoareTripleChecker+Valid, 22159 SdHoareTripleChecker+Invalid, 2349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:26:51,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5481 Valid, 22159 Invalid, 2349 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 17:26:51,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29582 states. [2021-12-06 17:26:52,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29582 to 20545. [2021-12-06 17:26:52,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20545 states, 18976 states have (on average 1.577887858347386) internal successors, (29942), 19043 states have internal predecessors, (29942), 1113 states have call successors, (1113), 391 states have call predecessors, (1113), 454 states have return successors, (1904), 1174 states have call predecessors, (1904), 1111 states have call successors, (1904) [2021-12-06 17:26:52,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20545 states to 20545 states and 32959 transitions. [2021-12-06 17:26:52,891 INFO L78 Accepts]: Start accepts. Automaton has 20545 states and 32959 transitions. Word has length 146 [2021-12-06 17:26:52,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:26:52,891 INFO L470 AbstractCegarLoop]: Abstraction has 20545 states and 32959 transitions. [2021-12-06 17:26:52,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:52,891 INFO L276 IsEmpty]: Start isEmpty. Operand 20545 states and 32959 transitions. [2021-12-06 17:26:52,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 17:26:52,898 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:26:52,898 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:26:52,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 17:26:52,898 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:26:52,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:26:52,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1904447622, now seen corresponding path program 1 times [2021-12-06 17:26:52,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:26:52,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319585957] [2021-12-06 17:26:52,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:26:52,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:26:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:52,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:26:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:52,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:26:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:52,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:26:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:52,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:26:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:52,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:26:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:52,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:26:52,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:26:52,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319585957] [2021-12-06 17:26:52,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319585957] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:26:52,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:26:52,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:26:52,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272020396] [2021-12-06 17:26:52,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:26:52,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:26:52,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:26:52,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:26:52,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:26:52,983 INFO L87 Difference]: Start difference. First operand 20545 states and 32959 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:26:58,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:26:58,877 INFO L93 Difference]: Finished difference Result 73779 states and 117496 transitions. [2021-12-06 17:26:58,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:26:58,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-06 17:26:58,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:26:58,998 INFO L225 Difference]: With dead ends: 73779 [2021-12-06 17:26:58,998 INFO L226 Difference]: Without dead ends: 55372 [2021-12-06 17:26:59,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:26:59,047 INFO L933 BasicCegarLoop]: 4705 mSDtfsCounter, 5415 mSDsluCounter, 17449 mSDsCounter, 0 mSdLazyCounter, 2251 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5441 SdHoareTripleChecker+Valid, 22154 SdHoareTripleChecker+Invalid, 2341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:26:59,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5441 Valid, 22154 Invalid, 2341 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 2251 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 17:26:59,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55372 states. [2021-12-06 17:27:01,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55372 to 38594. [2021-12-06 17:27:01,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38594 states, 35553 states have (on average 1.5622872893989255) internal successors, (55544), 35684 states have internal predecessors, (55544), 2137 states have call successors, (2137), 775 states have call predecessors, (2137), 902 states have return successors, (4450), 2262 states have call predecessors, (4450), 2135 states have call successors, (4450) [2021-12-06 17:27:01,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38594 states to 38594 states and 62131 transitions. [2021-12-06 17:27:01,278 INFO L78 Accepts]: Start accepts. Automaton has 38594 states and 62131 transitions. Word has length 146 [2021-12-06 17:27:01,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:27:01,278 INFO L470 AbstractCegarLoop]: Abstraction has 38594 states and 62131 transitions. [2021-12-06 17:27:01,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:27:01,278 INFO L276 IsEmpty]: Start isEmpty. Operand 38594 states and 62131 transitions. [2021-12-06 17:27:01,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 17:27:01,290 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:27:01,291 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:27:01,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 17:27:01,291 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:27:01,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:27:01,291 INFO L85 PathProgramCache]: Analyzing trace with hash -177302660, now seen corresponding path program 1 times [2021-12-06 17:27:01,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:27:01,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617520566] [2021-12-06 17:27:01,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:27:01,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:27:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:01,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:27:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:01,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:27:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:01,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:27:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:01,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:27:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:01,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:27:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:01,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:27:01,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:27:01,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617520566] [2021-12-06 17:27:01,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617520566] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:27:01,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:27:01,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:27:01,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490004295] [2021-12-06 17:27:01,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:27:01,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:27:01,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:27:01,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:27:01,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:27:01,367 INFO L87 Difference]: Start difference. First operand 38594 states and 62131 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:27:11,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:27:11,395 INFO L93 Difference]: Finished difference Result 142258 states and 228862 transitions. [2021-12-06 17:27:11,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:27:11,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-06 17:27:11,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:27:11,694 INFO L225 Difference]: With dead ends: 142258 [2021-12-06 17:27:11,694 INFO L226 Difference]: Without dead ends: 105802 [2021-12-06 17:27:11,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:27:11,792 INFO L933 BasicCegarLoop]: 4603 mSDtfsCounter, 5276 mSDsluCounter, 16899 mSDsCounter, 0 mSdLazyCounter, 2323 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5291 SdHoareTripleChecker+Valid, 21502 SdHoareTripleChecker+Invalid, 2448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:27:11,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5291 Valid, 21502 Invalid, 2448 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [125 Valid, 2323 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-06 17:27:11,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105802 states. [2021-12-06 17:27:16,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105802 to 74627. [2021-12-06 17:27:16,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74627 states, 68706 states have (on average 1.5545949407620878) internal successors, (106810), 68965 states have internal predecessors, (106810), 4121 states have call successors, (4121), 1543 states have call predecessors, (4121), 1798 states have return successors, (10936), 4374 states have call predecessors, (10936), 4119 states have call successors, (10936) [2021-12-06 17:27:16,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74627 states to 74627 states and 121867 transitions. [2021-12-06 17:27:16,629 INFO L78 Accepts]: Start accepts. Automaton has 74627 states and 121867 transitions. Word has length 146 [2021-12-06 17:27:16,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:27:16,629 INFO L470 AbstractCegarLoop]: Abstraction has 74627 states and 121867 transitions. [2021-12-06 17:27:16,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:27:16,629 INFO L276 IsEmpty]: Start isEmpty. Operand 74627 states and 121867 transitions. [2021-12-06 17:27:16,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 17:27:16,655 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:27:16,655 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:27:16,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 17:27:16,655 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:27:16,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:27:16,656 INFO L85 PathProgramCache]: Analyzing trace with hash 294053690, now seen corresponding path program 1 times [2021-12-06 17:27:16,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:27:16,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444423832] [2021-12-06 17:27:16,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:27:16,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:27:16,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:16,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:27:16,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:16,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:27:16,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:16,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:27:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:16,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:27:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:16,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:27:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:27:16,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:27:16,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444423832] [2021-12-06 17:27:16,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444423832] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:27:16,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:27:16,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:27:16,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42423029] [2021-12-06 17:27:16,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:27:16,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:27:16,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:27:16,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:27:16,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:27:16,746 INFO L87 Difference]: Start difference. First operand 74627 states and 121867 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:27:24,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:27:24,531 INFO L93 Difference]: Finished difference Result 168019 states and 279106 transitions. [2021-12-06 17:27:24,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:27:24,531 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-06 17:27:24,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:27:24,814 INFO L225 Difference]: With dead ends: 168019 [2021-12-06 17:27:24,814 INFO L226 Difference]: Without dead ends: 95530 [2021-12-06 17:27:24,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:27:24,959 INFO L933 BasicCegarLoop]: 4430 mSDtfsCounter, 4973 mSDsluCounter, 12484 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4990 SdHoareTripleChecker+Valid, 16914 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:27:24,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4990 Valid, 16914 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 17:27:25,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95530 states. [2021-12-06 17:27:29,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95530 to 74627. [2021-12-06 17:27:29,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74627 states, 68706 states have (on average 1.5508543649754025) internal successors, (106553), 68965 states have internal predecessors, (106553), 4121 states have call successors, (4121), 1543 states have call predecessors, (4121), 1798 states have return successors, (10936), 4374 states have call predecessors, (10936), 4119 states have call successors, (10936) [2021-12-06 17:27:29,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74627 states to 74627 states and 121610 transitions. [2021-12-06 17:27:29,844 INFO L78 Accepts]: Start accepts. Automaton has 74627 states and 121610 transitions. Word has length 146 [2021-12-06 17:27:29,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:27:29,844 INFO L470 AbstractCegarLoop]: Abstraction has 74627 states and 121610 transitions. [2021-12-06 17:27:29,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:27:29,844 INFO L276 IsEmpty]: Start isEmpty. Operand 74627 states and 121610 transitions. [2021-12-06 17:27:29,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 17:27:29,869 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:27:29,870 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:27:29,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 17:27:29,870 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:27:29,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:27:29,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1353309252, now seen corresponding path program 1 times [2021-12-06 17:27:29,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:27:29,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534634278] [2021-12-06 17:27:29,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:27:29,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:27:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:29,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:27:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:29,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:27:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:29,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:27:29,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:29,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:27:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:29,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:27:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:29,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:27:29,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:27:29,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534634278] [2021-12-06 17:27:29,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534634278] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:27:29,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:27:29,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:27:29,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016494294] [2021-12-06 17:27:29,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:27:29,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:27:29,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:27:29,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:27:29,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:27:29,953 INFO L87 Difference]: Start difference. First operand 74627 states and 121610 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:27:48,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:27:48,146 INFO L93 Difference]: Finished difference Result 273007 states and 446732 transitions. [2021-12-06 17:27:48,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:27:48,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-06 17:27:48,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:27:48,806 INFO L225 Difference]: With dead ends: 273007 [2021-12-06 17:27:48,806 INFO L226 Difference]: Without dead ends: 200518 [2021-12-06 17:27:49,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:27:49,008 INFO L933 BasicCegarLoop]: 4749 mSDtfsCounter, 5187 mSDsluCounter, 17449 mSDsCounter, 0 mSdLazyCounter, 2455 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5202 SdHoareTripleChecker+Valid, 22198 SdHoareTripleChecker+Invalid, 2542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:27:49,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5202 Valid, 22198 Invalid, 2542 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [87 Valid, 2455 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-06 17:27:49,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200518 states. [2021-12-06 17:27:58,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200518 to 146821. [2021-12-06 17:27:58,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146821 states, 135268 states have (on average 1.5466555282845906) internal successors, (209213), 135783 states have internal predecessors, (209213), 7961 states have call successors, (7961), 3079 states have call predecessors, (7961), 3590 states have return successors, (28154), 8470 states have call predecessors, (28154), 7959 states have call successors, (28154) [2021-12-06 17:27:59,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146821 states to 146821 states and 245328 transitions. [2021-12-06 17:27:59,077 INFO L78 Accepts]: Start accepts. Automaton has 146821 states and 245328 transitions. Word has length 146 [2021-12-06 17:27:59,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:27:59,077 INFO L470 AbstractCegarLoop]: Abstraction has 146821 states and 245328 transitions. [2021-12-06 17:27:59,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:27:59,077 INFO L276 IsEmpty]: Start isEmpty. Operand 146821 states and 245328 transitions. [2021-12-06 17:27:59,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 17:27:59,120 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:27:59,120 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:27:59,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 17:27:59,121 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:27:59,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:27:59,121 INFO L85 PathProgramCache]: Analyzing trace with hash 810307322, now seen corresponding path program 1 times [2021-12-06 17:27:59,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:27:59,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261230317] [2021-12-06 17:27:59,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:27:59,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:27:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:59,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:27:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:59,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:27:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:59,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:27:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:59,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:27:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:59,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:27:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:59,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:27:59,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:27:59,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261230317] [2021-12-06 17:27:59,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261230317] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:27:59,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:27:59,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:27:59,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575964241] [2021-12-06 17:27:59,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:27:59,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:27:59,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:27:59,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:27:59,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:27:59,315 INFO L87 Difference]: Start difference. First operand 146821 states and 245328 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:28:15,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:28:15,139 INFO L93 Difference]: Finished difference Result 331347 states and 567557 transitions. [2021-12-06 17:28:15,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:28:15,139 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-06 17:28:15,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:28:15,931 INFO L225 Difference]: With dead ends: 331347 [2021-12-06 17:28:15,931 INFO L226 Difference]: Without dead ends: 186664 [2021-12-06 17:28:16,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:28:16,210 INFO L933 BasicCegarLoop]: 4421 mSDtfsCounter, 4975 mSDsluCounter, 12484 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4992 SdHoareTripleChecker+Valid, 16905 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:28:16,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4992 Valid, 16905 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 17:28:16,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186664 states. [2021-12-06 17:28:26,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186664 to 146821. [2021-12-06 17:28:26,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146821 states, 135268 states have (on average 1.542863057042316) internal successors, (208700), 135783 states have internal predecessors, (208700), 7961 states have call successors, (7961), 3079 states have call predecessors, (7961), 3590 states have return successors, (28154), 8470 states have call predecessors, (28154), 7959 states have call successors, (28154) [2021-12-06 17:28:26,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146821 states to 146821 states and 244815 transitions. [2021-12-06 17:28:26,978 INFO L78 Accepts]: Start accepts. Automaton has 146821 states and 244815 transitions. Word has length 146 [2021-12-06 17:28:26,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:28:26,979 INFO L470 AbstractCegarLoop]: Abstraction has 146821 states and 244815 transitions. [2021-12-06 17:28:26,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:28:26,979 INFO L276 IsEmpty]: Start isEmpty. Operand 146821 states and 244815 transitions. [2021-12-06 17:28:27,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 17:28:27,033 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:28:27,033 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:28:27,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 17:28:27,034 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:28:27,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:28:27,034 INFO L85 PathProgramCache]: Analyzing trace with hash -228277252, now seen corresponding path program 1 times [2021-12-06 17:28:27,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:28:27,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374643599] [2021-12-06 17:28:27,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:28:27,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:28:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:28:27,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:28:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:28:27,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:28:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:28:27,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:28:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:28:27,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:28:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:28:27,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:28:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:28:27,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:28:27,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:28:27,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374643599] [2021-12-06 17:28:27,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374643599] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:28:27,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:28:27,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:28:27,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682744224] [2021-12-06 17:28:27,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:28:27,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:28:27,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:28:27,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:28:27,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:28:27,117 INFO L87 Difference]: Start difference. First operand 146821 states and 244815 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:28:43,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:28:43,730 INFO L93 Difference]: Finished difference Result 330319 states and 563962 transitions. [2021-12-06 17:28:43,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:28:43,730 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-06 17:28:43,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:28:44,322 INFO L225 Difference]: With dead ends: 330319 [2021-12-06 17:28:44,322 INFO L226 Difference]: Without dead ends: 185636 [2021-12-06 17:28:44,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:28:44,618 INFO L933 BasicCegarLoop]: 4416 mSDtfsCounter, 4840 mSDsluCounter, 16606 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4857 SdHoareTripleChecker+Valid, 21022 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:28:44,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4857 Valid, 21022 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 17:28:44,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185636 states. [2021-12-06 17:28:55,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185636 to 146821. [2021-12-06 17:28:55,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146821 states, 135268 states have (on average 1.5390705858000413) internal successors, (208187), 135783 states have internal predecessors, (208187), 7961 states have call successors, (7961), 3079 states have call predecessors, (7961), 3590 states have return successors, (28154), 8470 states have call predecessors, (28154), 7959 states have call successors, (28154) [2021-12-06 17:28:56,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146821 states to 146821 states and 244302 transitions. [2021-12-06 17:28:56,063 INFO L78 Accepts]: Start accepts. Automaton has 146821 states and 244302 transitions. Word has length 146 [2021-12-06 17:28:56,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:28:56,063 INFO L470 AbstractCegarLoop]: Abstraction has 146821 states and 244302 transitions. [2021-12-06 17:28:56,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:28:56,063 INFO L276 IsEmpty]: Start isEmpty. Operand 146821 states and 244302 transitions. [2021-12-06 17:28:56,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 17:28:56,103 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:28:56,104 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:28:56,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 17:28:56,104 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:28:56,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:28:56,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1924829566, now seen corresponding path program 1 times [2021-12-06 17:28:56,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:28:56,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332276627] [2021-12-06 17:28:56,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:28:56,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:28:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:28:56,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:28:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:28:56,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:28:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:28:56,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:28:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:28:56,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:28:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:28:56,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:28:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:28:56,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:28:56,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:28:56,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332276627] [2021-12-06 17:28:56,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332276627] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:28:56,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:28:56,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 17:28:56,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41135149] [2021-12-06 17:28:56,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:28:56,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:28:56,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:28:56,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:28:56,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:28:56,191 INFO L87 Difference]: Start difference. First operand 146821 states and 244302 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:29:21,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:29:21,945 INFO L93 Difference]: Finished difference Result 419841 states and 689532 transitions. [2021-12-06 17:29:21,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:29:21,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-06 17:29:21,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:29:22,853 INFO L225 Difference]: With dead ends: 419841 [2021-12-06 17:29:22,853 INFO L226 Difference]: Without dead ends: 275159 [2021-12-06 17:29:23,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:29:23,262 INFO L933 BasicCegarLoop]: 4908 mSDtfsCounter, 5489 mSDsluCounter, 12897 mSDsCounter, 0 mSdLazyCounter, 1834 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5529 SdHoareTripleChecker+Valid, 17805 SdHoareTripleChecker+Invalid, 1955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:29:23,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5529 Valid, 17805 Invalid, 1955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1834 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 17:29:23,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275159 states. [2021-12-06 17:29:39,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275159 to 218128. [2021-12-06 17:29:39,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218128 states, 200662 states have (on average 1.5299060111032483) internal successors, (306994), 201690 states have internal predecessors, (306994), 12076 states have call successors, (12076), 4621 states have call predecessors, (12076), 5388 states have return successors, (38831), 12328 states have call predecessors, (38831), 12074 states have call successors, (38831) [2021-12-06 17:29:40,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218128 states to 218128 states and 357901 transitions. [2021-12-06 17:29:40,360 INFO L78 Accepts]: Start accepts. Automaton has 218128 states and 357901 transitions. Word has length 146 [2021-12-06 17:29:40,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:29:40,360 INFO L470 AbstractCegarLoop]: Abstraction has 218128 states and 357901 transitions. [2021-12-06 17:29:40,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:29:40,360 INFO L276 IsEmpty]: Start isEmpty. Operand 218128 states and 357901 transitions. [2021-12-06 17:29:40,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-12-06 17:29:40,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:29:40,893 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:29:40,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 17:29:40,893 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:29:40,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:29:40,894 INFO L85 PathProgramCache]: Analyzing trace with hash 2134654768, now seen corresponding path program 1 times [2021-12-06 17:29:40,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:29:40,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909183523] [2021-12-06 17:29:40,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:29:40,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:29:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:29:40,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:29:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:29:40,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:29:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:29:40,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:29:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:29:41,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:29:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:29:41,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:29:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:29:41,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 17:29:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:29:41,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 17:29:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:29:41,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-06 17:29:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:29:41,029 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 17:29:41,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:29:41,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909183523] [2021-12-06 17:29:41,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909183523] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:29:41,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614968614] [2021-12-06 17:29:41,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:29:41,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:29:41,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:29:41,030 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:29:41,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 17:29:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:29:41,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 17:29:41,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:29:41,384 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 17:29:41,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:29:41,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614968614] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:29:41,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:29:41,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-06 17:29:41,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29956273] [2021-12-06 17:29:41,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:29:41,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:29:41,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:29:41,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:29:41,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:29:41,386 INFO L87 Difference]: Start difference. First operand 218128 states and 357901 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 17:30:10,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:30:10,600 INFO L93 Difference]: Finished difference Result 646255 states and 1066505 transitions. [2021-12-06 17:30:10,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:30:10,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 237 [2021-12-06 17:30:10,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:30:12,131 INFO L225 Difference]: With dead ends: 646255 [2021-12-06 17:30:12,131 INFO L226 Difference]: Without dead ends: 430266 [2021-12-06 17:30:12,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:30:12,876 INFO L933 BasicCegarLoop]: 4508 mSDtfsCounter, 4338 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4338 SdHoareTripleChecker+Valid, 4945 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:30:12,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4338 Valid, 4945 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:30:13,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430266 states. [2021-12-06 17:30:44,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430266 to 428722. [2021-12-06 17:30:44,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428722 states, 394568 states have (on average 1.528443766346992) internal successors, (603075), 396621 states have internal predecessors, (603075), 23376 states have call successors, (23376), 9241 states have call predecessors, (23376), 10776 states have return successors, (76377), 23371 states have call predecessors, (76377), 23374 states have call successors, (76377) [2021-12-06 17:30:46,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428722 states to 428722 states and 702828 transitions. [2021-12-06 17:30:46,502 INFO L78 Accepts]: Start accepts. Automaton has 428722 states and 702828 transitions. Word has length 237 [2021-12-06 17:30:46,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:30:46,502 INFO L470 AbstractCegarLoop]: Abstraction has 428722 states and 702828 transitions. [2021-12-06 17:30:46,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 17:30:46,502 INFO L276 IsEmpty]: Start isEmpty. Operand 428722 states and 702828 transitions. [2021-12-06 17:30:47,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-12-06 17:30:47,318 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:30:47,319 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:30:47,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 17:30:47,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-12-06 17:30:47,520 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:30:47,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:30:47,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1566052944, now seen corresponding path program 1 times [2021-12-06 17:30:47,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:30:47,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931114171] [2021-12-06 17:30:47,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:30:47,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:30:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:47,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:30:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:47,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:30:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:47,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:30:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:47,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:30:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:47,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:30:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:47,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 17:30:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:47,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 17:30:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:47,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-06 17:30:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:47,654 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 17:30:47,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:30:47,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931114171] [2021-12-06 17:30:47,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931114171] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:30:47,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126410630] [2021-12-06 17:30:47,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:30:47,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:30:47,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:30:47,655 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:30:47,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 17:30:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:47,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 17:30:47,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:30:47,941 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:30:47,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:30:47,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126410630] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:30:47,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:30:47,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-06 17:30:47,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632590287] [2021-12-06 17:30:47,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:30:47,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:30:47,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:30:47,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:30:47,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:30:47,943 INFO L87 Difference]: Start difference. First operand 428722 states and 702828 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 17:31:47,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:31:47,439 INFO L93 Difference]: Finished difference Result 1274187 states and 2101806 transitions. [2021-12-06 17:31:47,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:31:47,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 237 [2021-12-06 17:31:47,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:31:50,833 INFO L225 Difference]: With dead ends: 1274187 [2021-12-06 17:31:50,833 INFO L226 Difference]: Without dead ends: 847604 [2021-12-06 17:31:52,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:31:52,059 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 4326 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4326 SdHoareTripleChecker+Valid, 4885 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:31:52,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4326 Valid, 4885 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:31:52,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847604 states. [2021-12-06 17:32:52,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847604 to 844520. [2021-12-06 17:32:53,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844520 states, 777760 states have (on average 1.5278582081876158) internal successors, (1188307), 781863 states have internal predecessors, (1188307), 45206 states have call successors, (45206), 18481 states have call predecessors, (45206), 21552 states have return successors, (150699), 44687 states have call predecessors, (150699), 45204 states have call successors, (150699) [2021-12-06 17:32:57,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844520 states to 844520 states and 1384212 transitions. [2021-12-06 17:32:57,139 INFO L78 Accepts]: Start accepts. Automaton has 844520 states and 1384212 transitions. Word has length 237 [2021-12-06 17:32:57,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:32:57,140 INFO L470 AbstractCegarLoop]: Abstraction has 844520 states and 1384212 transitions. [2021-12-06 17:32:57,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 17:32:57,140 INFO L276 IsEmpty]: Start isEmpty. Operand 844520 states and 1384212 transitions. [2021-12-06 17:32:58,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-12-06 17:32:58,858 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:32:58,858 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:32:58,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 17:32:59,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:32:59,060 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:32:59,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:32:59,060 INFO L85 PathProgramCache]: Analyzing trace with hash 20944240, now seen corresponding path program 1 times [2021-12-06 17:32:59,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:32:59,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822439893] [2021-12-06 17:32:59,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:32:59,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:32:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:32:59,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:32:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:32:59,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:32:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:32:59,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:32:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:32:59,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:32:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:32:59,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 17:32:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:32:59,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 17:32:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:32:59,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 17:32:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:32:59,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-06 17:32:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:32:59,193 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 17:32:59,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:32:59,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822439893] [2021-12-06 17:32:59,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822439893] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:32:59,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304217853] [2021-12-06 17:32:59,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:32:59,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:32:59,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:32:59,195 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:32:59,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0f1bb5-dfe6-4d09-9ce7-522ed8c97759/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 17:32:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:32:59,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 17:32:59,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:32:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-06 17:32:59,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:32:59,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304217853] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:32:59,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:32:59,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-06 17:32:59,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129266931] [2021-12-06 17:32:59,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:32:59,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:32:59,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:32:59,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:32:59,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:32:59,447 INFO L87 Difference]: Start difference. First operand 844520 states and 1384212 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 17:34:59,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:34:59,821 INFO L93 Difference]: Finished difference Result 2518489 states and 4153908 transitions. [2021-12-06 17:34:59,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:34:59,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 237 [2021-12-06 17:34:59,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:35:06,928 INFO L225 Difference]: With dead ends: 2518489 [2021-12-06 17:35:06,928 INFO L226 Difference]: Without dead ends: 1676108 [2021-12-06 17:35:09,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:35:09,845 INFO L933 BasicCegarLoop]: 4508 mSDtfsCounter, 4350 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4350 SdHoareTripleChecker+Valid, 4945 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:35:09,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4350 Valid, 4945 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:35:11,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676108 states.