./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c8b4c0-3cde-4711-b249-29fc1e4ad808/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c8b4c0-3cde-4711-b249-29fc1e4ad808/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c8b4c0-3cde-4711-b249-29fc1e4ad808/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c8b4c0-3cde-4711-b249-29fc1e4ad808/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c8b4c0-3cde-4711-b249-29fc1e4ad808/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c8b4c0-3cde-4711-b249-29fc1e4ad808/bin/uautomizer-DQz5hQGWxF --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 a44e961521da9b8f4535724e185f402d94bec27d495ab6df10e2b3c1ffa4513a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:53:01,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:53:01,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:53:01,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:53:01,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:53:01,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:53:01,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:53:01,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:53:01,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:53:01,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:53:01,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:53:01,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:53:01,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:53:01,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:53:01,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:53:01,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:53:01,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:53:01,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:53:01,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:53:01,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:53:01,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:53:01,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:53:01,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:53:01,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:53:01,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:53:01,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:53:01,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:53:01,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:53:01,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:53:01,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:53:01,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:53:01,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:53:01,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:53:01,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:53:01,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:53:01,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:53:01,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:53:01,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:53:01,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:53:01,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:53:01,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:53:01,766 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c8b4c0-3cde-4711-b249-29fc1e4ad808/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 05:53:01,805 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:53:01,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:53:01,806 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:53:01,806 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:53:01,806 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:53:01,807 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:53:01,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:53:01,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:53:01,808 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:53:01,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:53:01,808 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:53:01,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:53:01,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:53:01,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:53:01,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:53:01,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:53:01,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:53:01,809 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:53:01,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:53:01,810 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:53:01,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:53:01,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:53:01,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:53:01,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:53:01,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:53:01,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:53:01,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:53:01,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:53:01,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:53:01,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:53:01,812 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:53:01,812 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:53:01,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:53:01,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:53:01,813 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_87c8b4c0-3cde-4711-b249-29fc1e4ad808/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c8b4c0-3cde-4711-b249-29fc1e4ad808/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a44e961521da9b8f4535724e185f402d94bec27d495ab6df10e2b3c1ffa4513a [2021-11-20 05:53:02,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:53:02,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:53:02,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:53:02,085 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:53:02,086 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:53:02,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c8b4c0-3cde-4711-b249-29fc1e4ad808/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c [2021-11-20 05:53:02,164 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c8b4c0-3cde-4711-b249-29fc1e4ad808/bin/uautomizer-DQz5hQGWxF/data/4e59f90e3/12f0895eb5dd409ca2c477d7bec40590/FLAG1ff91da99 [2021-11-20 05:53:02,714 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:53:02,714 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c8b4c0-3cde-4711-b249-29fc1e4ad808/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c [2021-11-20 05:53:02,727 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c8b4c0-3cde-4711-b249-29fc1e4ad808/bin/uautomizer-DQz5hQGWxF/data/4e59f90e3/12f0895eb5dd409ca2c477d7bec40590/FLAG1ff91da99 [2021-11-20 05:53:03,058 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c8b4c0-3cde-4711-b249-29fc1e4ad808/bin/uautomizer-DQz5hQGWxF/data/4e59f90e3/12f0895eb5dd409ca2c477d7bec40590 [2021-11-20 05:53:03,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:53:03,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:53:03,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:53:03,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:53:03,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:53:03,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:53:03" (1/1) ... [2021-11-20 05:53:03,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@267b894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:03, skipping insertion in model container [2021-11-20 05:53:03,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:53:03" (1/1) ... [2021-11-20 05:53:03,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:53:03,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:53:03,354 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_87c8b4c0-3cde-4711-b249-29fc1e4ad808/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c[16936,16949] [2021-11-20 05:53:03,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:53:03,367 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:53:03,438 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_87c8b4c0-3cde-4711-b249-29fc1e4ad808/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c[16936,16949] [2021-11-20 05:53:03,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:53:03,452 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:53:03,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:03 WrapperNode [2021-11-20 05:53:03,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:53:03,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:53:03,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:53:03,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:53:03,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:03" (1/1) ... [2021-11-20 05:53:03,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:03" (1/1) ... [2021-11-20 05:53:03,532 INFO L137 Inliner]: procedures = 25, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 461 [2021-11-20 05:53:03,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:53:03,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:53:03,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:53:03,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:53:03,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:03" (1/1) ... [2021-11-20 05:53:03,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:03" (1/1) ... [2021-11-20 05:53:03,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:03" (1/1) ... [2021-11-20 05:53:03,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:03" (1/1) ... [2021-11-20 05:53:03,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:03" (1/1) ... [2021-11-20 05:53:03,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:03" (1/1) ... [2021-11-20 05:53:03,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:03" (1/1) ... [2021-11-20 05:53:03,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:53:03,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:53:03,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:53:03,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:53:03,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:03" (1/1) ... [2021-11-20 05:53:03,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:53:03,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c8b4c0-3cde-4711-b249-29fc1e4ad808/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:03,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c8b4c0-3cde-4711-b249-29fc1e4ad808/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:53:03,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c8b4c0-3cde-4711-b249-29fc1e4ad808/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:53:03,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:53:03,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:53:03,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:53:03,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:53:03,755 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:53:03,756 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:53:04,429 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:53:04,438 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:53:04,442 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 05:53:04,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:53:04 BoogieIcfgContainer [2021-11-20 05:53:04,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:53:04,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:53:04,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:53:04,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:53:04,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:53:03" (1/3) ... [2021-11-20 05:53:04,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad69fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:53:04, skipping insertion in model container [2021-11-20 05:53:04,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:03" (2/3) ... [2021-11-20 05:53:04,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad69fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:53:04, skipping insertion in model container [2021-11-20 05:53:04,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:53:04" (3/3) ... [2021-11-20 05:53:04,459 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c [2021-11-20 05:53:04,464 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:53:04,465 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:53:04,538 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:53:04,550 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 05:53:04,550 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 05:53:04,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 143 states have (on average 1.7202797202797202) internal successors, (246), 144 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:04,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-20 05:53:04,582 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:04,583 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] [2021-11-20 05:53:04,583 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:04,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:04,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1929732074, now seen corresponding path program 1 times [2021-11-20 05:53:04,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:04,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745430614] [2021-11-20 05:53:04,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:04,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:04,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:04,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:04,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745430614] [2021-11-20 05:53:04,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745430614] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:04,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:04,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 05:53:04,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771621596] [2021-11-20 05:53:04,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:04,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:53:04,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:04,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:53:04,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:53:04,879 INFO L87 Difference]: Start difference. First operand has 145 states, 143 states have (on average 1.7202797202797202) internal successors, (246), 144 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:05,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:05,041 INFO L93 Difference]: Finished difference Result 247 states and 408 transitions. [2021-11-20 05:53:05,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:53:05,043 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-20 05:53:05,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:05,085 INFO L225 Difference]: With dead ends: 247 [2021-11-20 05:53:05,085 INFO L226 Difference]: Without dead ends: 141 [2021-11-20 05:53:05,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:53:05,099 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 3 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:05,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 920 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:53:05,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-20 05:53:05,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-11-20 05:53:05,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.4142857142857144) internal successors, (198), 140 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:05,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 198 transitions. [2021-11-20 05:53:05,180 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 198 transitions. Word has length 37 [2021-11-20 05:53:05,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:05,181 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 198 transitions. [2021-11-20 05:53:05,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:05,181 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 198 transitions. [2021-11-20 05:53:05,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-20 05:53:05,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:05,191 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] [2021-11-20 05:53:05,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:53:05,192 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:05,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:05,195 INFO L85 PathProgramCache]: Analyzing trace with hash -2008203596, now seen corresponding path program 1 times [2021-11-20 05:53:05,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:05,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923494044] [2021-11-20 05:53:05,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:05,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:05,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:05,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:05,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923494044] [2021-11-20 05:53:05,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923494044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:05,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:05,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:05,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434764588] [2021-11-20 05:53:05,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:05,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:53:05,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:05,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:53:05,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:05,384 INFO L87 Difference]: Start difference. First operand 141 states and 198 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:05,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:05,427 INFO L93 Difference]: Finished difference Result 317 states and 480 transitions. [2021-11-20 05:53:05,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:05,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-20 05:53:05,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:05,434 INFO L225 Difference]: With dead ends: 317 [2021-11-20 05:53:05,434 INFO L226 Difference]: Without dead ends: 223 [2021-11-20 05:53:05,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:05,441 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 139 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:05,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 467 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:53:05,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-20 05:53:05,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2021-11-20 05:53:05,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.4863636363636363) internal successors, (327), 220 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:05,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 327 transitions. [2021-11-20 05:53:05,471 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 327 transitions. Word has length 77 [2021-11-20 05:53:05,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:05,473 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 327 transitions. [2021-11-20 05:53:05,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:05,473 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 327 transitions. [2021-11-20 05:53:05,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-20 05:53:05,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:05,477 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] [2021-11-20 05:53:05,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 05:53:05,481 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:05,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:05,482 INFO L85 PathProgramCache]: Analyzing trace with hash 823495780, now seen corresponding path program 1 times [2021-11-20 05:53:05,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:05,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130730437] [2021-11-20 05:53:05,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:05,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:05,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:05,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:05,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130730437] [2021-11-20 05:53:05,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130730437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:05,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:05,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:05,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619925789] [2021-11-20 05:53:05,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:05,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:53:05,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:05,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:53:05,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:05,666 INFO L87 Difference]: Start difference. First operand 221 states and 327 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:05,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:05,707 INFO L93 Difference]: Finished difference Result 545 states and 847 transitions. [2021-11-20 05:53:05,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:05,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-20 05:53:05,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:05,711 INFO L225 Difference]: With dead ends: 545 [2021-11-20 05:53:05,711 INFO L226 Difference]: Without dead ends: 371 [2021-11-20 05:53:05,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:05,722 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 134 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:05,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 458 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:53:05,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-11-20 05:53:05,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 369. [2021-11-20 05:53:05,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 1.5326086956521738) internal successors, (564), 368 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:05,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 564 transitions. [2021-11-20 05:53:05,757 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 564 transitions. Word has length 78 [2021-11-20 05:53:05,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:05,759 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 564 transitions. [2021-11-20 05:53:05,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:05,760 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 564 transitions. [2021-11-20 05:53:05,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 05:53:05,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:05,762 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] [2021-11-20 05:53:05,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 05:53:05,763 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:05,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:05,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1276515004, now seen corresponding path program 1 times [2021-11-20 05:53:05,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:05,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888903524] [2021-11-20 05:53:05,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:05,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:05,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:05,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:05,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888903524] [2021-11-20 05:53:05,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888903524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:05,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:05,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:05,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735503891] [2021-11-20 05:53:05,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:05,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:53:05,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:05,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:53:05,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:05,896 INFO L87 Difference]: Start difference. First operand 369 states and 564 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:05,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:05,939 INFO L93 Difference]: Finished difference Result 965 states and 1518 transitions. [2021-11-20 05:53:05,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:05,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-20 05:53:05,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:05,948 INFO L225 Difference]: With dead ends: 965 [2021-11-20 05:53:05,949 INFO L226 Difference]: Without dead ends: 643 [2021-11-20 05:53:05,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:05,958 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 129 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:05,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 449 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:53:05,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-11-20 05:53:05,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 641. [2021-11-20 05:53:05,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 1.55625) internal successors, (996), 640 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:05,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 996 transitions. [2021-11-20 05:53:05,996 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 996 transitions. Word has length 79 [2021-11-20 05:53:05,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:05,996 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 996 transitions. [2021-11-20 05:53:05,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:05,997 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 996 transitions. [2021-11-20 05:53:05,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 05:53:05,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:05,998 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] [2021-11-20 05:53:05,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 05:53:05,998 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:05,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:05,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1327982836, now seen corresponding path program 1 times [2021-11-20 05:53:05,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:05,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107738872] [2021-11-20 05:53:05,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:05,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:06,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:06,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:06,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107738872] [2021-11-20 05:53:06,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107738872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:06,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:06,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:06,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132480322] [2021-11-20 05:53:06,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:06,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:53:06,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:06,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:53:06,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:06,058 INFO L87 Difference]: Start difference. First operand 641 states and 996 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:06,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:06,109 INFO L93 Difference]: Finished difference Result 1733 states and 2734 transitions. [2021-11-20 05:53:06,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:06,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-20 05:53:06,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:06,160 INFO L225 Difference]: With dead ends: 1733 [2021-11-20 05:53:06,160 INFO L226 Difference]: Without dead ends: 1139 [2021-11-20 05:53:06,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:06,162 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 124 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:06,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 440 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:53:06,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-11-20 05:53:06,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1137. [2021-11-20 05:53:06,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 1136 states have (on average 1.5633802816901408) internal successors, (1776), 1136 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:06,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1776 transitions. [2021-11-20 05:53:06,242 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1776 transitions. Word has length 80 [2021-11-20 05:53:06,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:06,245 INFO L470 AbstractCegarLoop]: Abstraction has 1137 states and 1776 transitions. [2021-11-20 05:53:06,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:06,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1776 transitions. [2021-11-20 05:53:06,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-20 05:53:06,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:06,252 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] [2021-11-20 05:53:06,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 05:53:06,252 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:06,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:06,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1219881940, now seen corresponding path program 1 times [2021-11-20 05:53:06,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:06,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693190342] [2021-11-20 05:53:06,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:06,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:06,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:06,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:06,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693190342] [2021-11-20 05:53:06,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693190342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:06,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:06,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:06,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092568931] [2021-11-20 05:53:06,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:06,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:53:06,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:06,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:53:06,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:06,330 INFO L87 Difference]: Start difference. First operand 1137 states and 1776 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:06,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:06,387 INFO L93 Difference]: Finished difference Result 3125 states and 4914 transitions. [2021-11-20 05:53:06,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:06,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-20 05:53:06,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:06,400 INFO L225 Difference]: With dead ends: 3125 [2021-11-20 05:53:06,400 INFO L226 Difference]: Without dead ends: 2035 [2021-11-20 05:53:06,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:06,403 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 119 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:06,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 431 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:53:06,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2021-11-20 05:53:06,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2033. [2021-11-20 05:53:06,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 2032 states have (on average 1.5590551181102361) internal successors, (3168), 2032 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:06,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 3168 transitions. [2021-11-20 05:53:06,479 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 3168 transitions. Word has length 81 [2021-11-20 05:53:06,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:06,480 INFO L470 AbstractCegarLoop]: Abstraction has 2033 states and 3168 transitions. [2021-11-20 05:53:06,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:06,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 3168 transitions. [2021-11-20 05:53:06,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-20 05:53:06,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:06,484 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] [2021-11-20 05:53:06,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 05:53:06,485 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:06,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:06,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1035004540, now seen corresponding path program 1 times [2021-11-20 05:53:06,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:06,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285893918] [2021-11-20 05:53:06,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:06,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:06,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:06,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:06,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285893918] [2021-11-20 05:53:06,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285893918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:06,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:06,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:06,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054090736] [2021-11-20 05:53:06,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:06,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:53:06,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:06,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:53:06,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:06,556 INFO L87 Difference]: Start difference. First operand 2033 states and 3168 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:06,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:06,682 INFO L93 Difference]: Finished difference Result 5621 states and 8770 transitions. [2021-11-20 05:53:06,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:06,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-20 05:53:06,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:06,702 INFO L225 Difference]: With dead ends: 5621 [2021-11-20 05:53:06,702 INFO L226 Difference]: Without dead ends: 3635 [2021-11-20 05:53:06,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:06,708 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 114 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:06,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 422 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:53:06,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3635 states. [2021-11-20 05:53:06,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3635 to 3633. [2021-11-20 05:53:06,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3633 states, 3632 states have (on average 1.5462555066079295) internal successors, (5616), 3632 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:06,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3633 states to 3633 states and 5616 transitions. [2021-11-20 05:53:06,894 INFO L78 Accepts]: Start accepts. Automaton has 3633 states and 5616 transitions. Word has length 82 [2021-11-20 05:53:06,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:06,894 INFO L470 AbstractCegarLoop]: Abstraction has 3633 states and 5616 transitions. [2021-11-20 05:53:06,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:06,895 INFO L276 IsEmpty]: Start isEmpty. Operand 3633 states and 5616 transitions. [2021-11-20 05:53:06,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-20 05:53:06,896 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:06,896 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] [2021-11-20 05:53:06,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 05:53:06,896 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:06,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:06,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1846622820, now seen corresponding path program 1 times [2021-11-20 05:53:06,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:06,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685554232] [2021-11-20 05:53:06,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:06,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:07,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:07,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:07,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685554232] [2021-11-20 05:53:07,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685554232] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:07,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:07,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 05:53:07,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840090790] [2021-11-20 05:53:07,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:07,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:53:07,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:07,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:53:07,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:53:07,007 INFO L87 Difference]: Start difference. First operand 3633 states and 5616 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:07,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:07,933 INFO L93 Difference]: Finished difference Result 28735 states and 44599 transitions. [2021-11-20 05:53:07,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:53:07,934 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-20 05:53:07,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:08,114 INFO L225 Difference]: With dead ends: 28735 [2021-11-20 05:53:08,114 INFO L226 Difference]: Without dead ends: 25149 [2021-11-20 05:53:08,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:53:08,125 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 1893 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1893 SdHoareTripleChecker+Valid, 2912 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:08,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1893 Valid, 2912 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:53:08,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25149 states. [2021-11-20 05:53:08,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25149 to 7217. [2021-11-20 05:53:08,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7217 states, 7216 states have (on average 1.5321507760532151) internal successors, (11056), 7216 states have internal predecessors, (11056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:08,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7217 states to 7217 states and 11056 transitions. [2021-11-20 05:53:08,746 INFO L78 Accepts]: Start accepts. Automaton has 7217 states and 11056 transitions. Word has length 83 [2021-11-20 05:53:08,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:08,747 INFO L470 AbstractCegarLoop]: Abstraction has 7217 states and 11056 transitions. [2021-11-20 05:53:08,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:08,747 INFO L276 IsEmpty]: Start isEmpty. Operand 7217 states and 11056 transitions. [2021-11-20 05:53:08,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-20 05:53:08,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:08,748 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] [2021-11-20 05:53:08,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 05:53:08,749 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:08,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:08,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1027409470, now seen corresponding path program 1 times [2021-11-20 05:53:08,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:08,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135551620] [2021-11-20 05:53:08,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:08,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:08,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:08,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:08,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135551620] [2021-11-20 05:53:08,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135551620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:08,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:08,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 05:53:08,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729336071] [2021-11-20 05:53:08,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:08,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:53:08,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:08,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:53:08,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:53:08,950 INFO L87 Difference]: Start difference. First operand 7217 states and 11056 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:10,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:10,691 INFO L93 Difference]: Finished difference Result 45245 states and 68470 transitions. [2021-11-20 05:53:10,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:53:10,692 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-20 05:53:10,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:10,778 INFO L225 Difference]: With dead ends: 45245 [2021-11-20 05:53:10,778 INFO L226 Difference]: Without dead ends: 38075 [2021-11-20 05:53:10,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:53:10,799 INFO L933 BasicCegarLoop]: 425 mSDtfsCounter, 1024 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:10,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1024 Valid, 1224 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:53:10,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38075 states. [2021-11-20 05:53:12,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38075 to 38065. [2021-11-20 05:53:12,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38065 states, 38064 states have (on average 1.5060949978982765) internal successors, (57328), 38064 states have internal predecessors, (57328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:12,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38065 states to 38065 states and 57328 transitions. [2021-11-20 05:53:12,754 INFO L78 Accepts]: Start accepts. Automaton has 38065 states and 57328 transitions. Word has length 84 [2021-11-20 05:53:12,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:12,754 INFO L470 AbstractCegarLoop]: Abstraction has 38065 states and 57328 transitions. [2021-11-20 05:53:12,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:12,755 INFO L276 IsEmpty]: Start isEmpty. Operand 38065 states and 57328 transitions. [2021-11-20 05:53:12,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-20 05:53:12,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:12,756 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] [2021-11-20 05:53:12,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 05:53:12,757 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:12,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:12,757 INFO L85 PathProgramCache]: Analyzing trace with hash 920622579, now seen corresponding path program 1 times [2021-11-20 05:53:12,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:12,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31508596] [2021-11-20 05:53:12,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:12,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:12,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:12,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:12,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31508596] [2021-11-20 05:53:12,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31508596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:12,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:12,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 05:53:12,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411670122] [2021-11-20 05:53:12,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:12,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:53:12,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:12,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:53:12,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:53:12,884 INFO L87 Difference]: Start difference. First operand 38065 states and 57328 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:15,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:15,826 INFO L93 Difference]: Finished difference Result 79155 states and 117681 transitions. [2021-11-20 05:53:15,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:53:15,827 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-20 05:53:15,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:15,990 INFO L225 Difference]: With dead ends: 79155 [2021-11-20 05:53:15,991 INFO L226 Difference]: Without dead ends: 79153 [2021-11-20 05:53:16,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-20 05:53:16,013 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 1092 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:16,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1092 Valid, 980 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:53:16,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79153 states. [2021-11-20 05:53:18,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79153 to 40369. [2021-11-20 05:53:18,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40369 states, 40368 states have (on average 1.4772096710265556) internal successors, (59632), 40368 states have internal predecessors, (59632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:18,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40369 states to 40369 states and 59632 transitions. [2021-11-20 05:53:18,462 INFO L78 Accepts]: Start accepts. Automaton has 40369 states and 59632 transitions. Word has length 85 [2021-11-20 05:53:18,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:18,463 INFO L470 AbstractCegarLoop]: Abstraction has 40369 states and 59632 transitions. [2021-11-20 05:53:18,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:18,463 INFO L276 IsEmpty]: Start isEmpty. Operand 40369 states and 59632 transitions. [2021-11-20 05:53:18,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-20 05:53:18,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:18,465 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] [2021-11-20 05:53:18,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 05:53:18,465 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:18,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:18,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1472892313, now seen corresponding path program 1 times [2021-11-20 05:53:18,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:18,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550333048] [2021-11-20 05:53:18,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:18,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:18,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:18,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550333048] [2021-11-20 05:53:18,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550333048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:18,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:18,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:18,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200396469] [2021-11-20 05:53:18,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:18,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:53:18,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:18,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:53:18,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:18,510 INFO L87 Difference]: Start difference. First operand 40369 states and 59632 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:20,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:20,464 INFO L93 Difference]: Finished difference Result 98711 states and 145940 transitions. [2021-11-20 05:53:20,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:20,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-20 05:53:20,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:20,567 INFO L225 Difference]: With dead ends: 98711 [2021-11-20 05:53:20,567 INFO L226 Difference]: Without dead ends: 58389 [2021-11-20 05:53:20,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:20,609 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 105 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:20,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 397 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:53:20,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58389 states. [2021-11-20 05:53:23,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58389 to 58387. [2021-11-20 05:53:23,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58387 states, 58386 states have (on average 1.4729901003665262) internal successors, (86002), 58386 states have internal predecessors, (86002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:23,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58387 states to 58387 states and 86002 transitions. [2021-11-20 05:53:23,473 INFO L78 Accepts]: Start accepts. Automaton has 58387 states and 86002 transitions. Word has length 86 [2021-11-20 05:53:23,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:23,473 INFO L470 AbstractCegarLoop]: Abstraction has 58387 states and 86002 transitions. [2021-11-20 05:53:23,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:23,473 INFO L276 IsEmpty]: Start isEmpty. Operand 58387 states and 86002 transitions. [2021-11-20 05:53:23,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-20 05:53:23,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:23,501 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:23,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 05:53:23,501 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:23,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:23,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1072838691, now seen corresponding path program 1 times [2021-11-20 05:53:23,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:23,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418200890] [2021-11-20 05:53:23,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:23,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:53:23,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:23,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418200890] [2021-11-20 05:53:23,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418200890] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:53:23,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621119151] [2021-11-20 05:53:23,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:23,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:23,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c8b4c0-3cde-4711-b249-29fc1e4ad808/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:23,611 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c8b4c0-3cde-4711-b249-29fc1e4ad808/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:23,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c8b4c0-3cde-4711-b249-29fc1e4ad808/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 05:53:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:23,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 05:53:23,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:24,088 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:53:24,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:24,797 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:53:24,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621119151] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:53:24,797 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:53:24,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2021-11-20 05:53:24,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610525969] [2021-11-20 05:53:24,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:53:24,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:53:24,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:24,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:53:24,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:53:24,800 INFO L87 Difference]: Start difference. First operand 58387 states and 86002 transitions. Second operand has 9 states, 9 states have (on average 34.333333333333336) internal successors, (309), 9 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:30,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:30,705 INFO L93 Difference]: Finished difference Result 181680 states and 269213 transitions. [2021-11-20 05:53:30,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:53:30,705 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 34.333333333333336) internal successors, (309), 9 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-20 05:53:30,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:30,995 INFO L225 Difference]: With dead ends: 181680 [2021-11-20 05:53:30,995 INFO L226 Difference]: Without dead ends: 141358 [2021-11-20 05:53:31,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:53:31,045 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 942 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:31,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [942 Valid, 1274 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:53:31,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141358 states. [2021-11-20 05:53:36,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141358 to 133907. [2021-11-20 05:53:37,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133907 states, 133906 states have (on average 1.470061087628635) internal successors, (196850), 133906 states have internal predecessors, (196850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:37,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133907 states to 133907 states and 196850 transitions. [2021-11-20 05:53:37,388 INFO L78 Accepts]: Start accepts. Automaton has 133907 states and 196850 transitions. Word has length 117 [2021-11-20 05:53:37,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:37,388 INFO L470 AbstractCegarLoop]: Abstraction has 133907 states and 196850 transitions. [2021-11-20 05:53:37,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 34.333333333333336) internal successors, (309), 9 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:37,388 INFO L276 IsEmpty]: Start isEmpty. Operand 133907 states and 196850 transitions. [2021-11-20 05:53:37,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-20 05:53:37,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:37,418 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:37,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c8b4c0-3cde-4711-b249-29fc1e4ad808/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:37,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c8b4c0-3cde-4711-b249-29fc1e4ad808/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-20 05:53:37,646 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:37,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:37,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1628565047, now seen corresponding path program 1 times [2021-11-20 05:53:37,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:37,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651059132] [2021-11-20 05:53:37,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:37,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:37,718 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:37,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:37,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651059132] [2021-11-20 05:53:37,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651059132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:37,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:37,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:37,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278439602] [2021-11-20 05:53:37,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:37,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:53:37,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:37,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:53:37,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:37,721 INFO L87 Difference]: Start difference. First operand 133907 states and 196850 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:47,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:47,222 INFO L93 Difference]: Finished difference Result 355991 states and 522676 transitions. [2021-11-20 05:53:47,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:47,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-20 05:53:47,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:47,552 INFO L225 Difference]: With dead ends: 355991 [2021-11-20 05:53:47,552 INFO L226 Difference]: Without dead ends: 240789 [2021-11-20 05:53:47,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:47,852 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 103 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:47,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 385 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:53:47,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240789 states.