./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d6007c-100d-4f93-85e5-39d46f5a6ae6/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d6007c-100d-4f93-85e5-39d46f5a6ae6/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d6007c-100d-4f93-85e5-39d46f5a6ae6/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d6007c-100d-4f93-85e5-39d46f5a6ae6/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d6007c-100d-4f93-85e5-39d46f5a6ae6/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d6007c-100d-4f93-85e5-39d46f5a6ae6/bin/uautomizer-YU5uOKAj3y --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 57425e6703a3285008157cd8157da2d7bfae6570ff511478ed083b6b19ed0aed --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:35:54,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:35:54,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:35:54,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:35:54,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:35:54,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:35:54,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:35:54,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:35:54,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:35:54,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:35:54,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:35:54,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:35:54,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:35:54,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:35:54,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:35:54,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:35:54,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:35:54,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:35:54,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:35:54,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:35:54,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:35:54,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:35:54,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:35:54,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:35:54,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:35:54,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:35:54,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:35:54,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:35:54,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:35:54,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:35:54,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:35:54,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:35:54,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:35:54,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:35:54,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:35:54,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:35:54,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:35:54,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:35:54,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:35:54,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:35:54,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:35:54,669 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d6007c-100d-4f93-85e5-39d46f5a6ae6/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:35:54,716 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:35:54,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:35:54,717 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:35:54,717 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:35:54,718 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:35:54,719 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:35:54,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:35:54,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:35:54,720 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:35:54,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:35:54,721 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:35:54,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:35:54,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:35:54,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:35:54,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:35:54,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:35:54,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:35:54,723 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:35:54,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:35:54,723 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:35:54,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:35:54,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:35:54,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:35:54,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:35:54,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:35:54,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:35:54,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:35:54,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:35:54,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:35:54,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:35:54,728 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:35:54,728 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:35:54,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:35:54,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:35:54,729 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_85d6007c-100d-4f93-85e5-39d46f5a6ae6/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d6007c-100d-4f93-85e5-39d46f5a6ae6/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57425e6703a3285008157cd8157da2d7bfae6570ff511478ed083b6b19ed0aed [2021-11-13 18:35:55,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:35:55,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:35:55,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:35:55,089 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:35:55,090 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:35:55,093 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d6007c-100d-4f93-85e5-39d46f5a6ae6/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2021-11-13 18:35:55,195 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d6007c-100d-4f93-85e5-39d46f5a6ae6/bin/uautomizer-YU5uOKAj3y/data/60b8dc996/59ef55d16e6447429caf25a07c979358/FLAGe68056b67 [2021-11-13 18:35:55,755 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:35:55,756 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d6007c-100d-4f93-85e5-39d46f5a6ae6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2021-11-13 18:35:55,767 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d6007c-100d-4f93-85e5-39d46f5a6ae6/bin/uautomizer-YU5uOKAj3y/data/60b8dc996/59ef55d16e6447429caf25a07c979358/FLAGe68056b67 [2021-11-13 18:35:56,071 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d6007c-100d-4f93-85e5-39d46f5a6ae6/bin/uautomizer-YU5uOKAj3y/data/60b8dc996/59ef55d16e6447429caf25a07c979358 [2021-11-13 18:35:56,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:35:56,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:35:56,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:35:56,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:35:56,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:35:56,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:35:56" (1/1) ... [2021-11-13 18:35:56,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@166fbd0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:56, skipping insertion in model container [2021-11-13 18:35:56,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:35:56" (1/1) ... [2021-11-13 18:35:56,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:35:56,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:35:56,508 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d6007c-100d-4f93-85e5-39d46f5a6ae6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[5771,5784] [2021-11-13 18:35:56,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:35:56,584 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:35:56,645 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d6007c-100d-4f93-85e5-39d46f5a6ae6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[5771,5784] [2021-11-13 18:35:56,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:35:56,684 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:35:56,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:56 WrapperNode [2021-11-13 18:35:56,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:35:56,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:35:56,687 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:35:56,687 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:35:56,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:56" (1/1) ... [2021-11-13 18:35:56,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:56" (1/1) ... [2021-11-13 18:35:56,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:35:56,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:35:56,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:35:56,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:35:56,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:56" (1/1) ... [2021-11-13 18:35:56,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:56" (1/1) ... [2021-11-13 18:35:56,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:56" (1/1) ... [2021-11-13 18:35:56,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:56" (1/1) ... [2021-11-13 18:35:56,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:56" (1/1) ... [2021-11-13 18:35:56,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:56" (1/1) ... [2021-11-13 18:35:56,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:56" (1/1) ... [2021-11-13 18:35:56,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:35:56,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:35:56,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:35:56,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:35:56,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:56" (1/1) ... [2021-11-13 18:35:56,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:35:56,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d6007c-100d-4f93-85e5-39d46f5a6ae6/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:35:56,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d6007c-100d-4f93-85e5-39d46f5a6ae6/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:35:56,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d6007c-100d-4f93-85e5-39d46f5a6ae6/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:35:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:35:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:35:56,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:35:56,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:35:57,701 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:35:57,702 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 18:35:57,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:35:57 BoogieIcfgContainer [2021-11-13 18:35:57,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:35:57,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:35:57,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:35:57,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:35:57,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:35:56" (1/3) ... [2021-11-13 18:35:57,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8161f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:35:57, skipping insertion in model container [2021-11-13 18:35:57,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:35:56" (2/3) ... [2021-11-13 18:35:57,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8161f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:35:57, skipping insertion in model container [2021-11-13 18:35:57,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:35:57" (3/3) ... [2021-11-13 18:35:57,713 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2021-11-13 18:35:57,720 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:35:57,720 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:35:57,774 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:35:57,782 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 [2021-11-13 18:35:57,783 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:35:57,805 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 95 states have (on average 1.736842105263158) internal successors, (165), 96 states have internal predecessors, (165), 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) [2021-11-13 18:35:57,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-13 18:35:57,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:35:57,816 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] [2021-11-13 18:35:57,817 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:35:57,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:35:57,824 INFO L85 PathProgramCache]: Analyzing trace with hash -857023919, now seen corresponding path program 1 times [2021-11-13 18:35:57,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:35:57,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045001101] [2021-11-13 18:35:57,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:35:57,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:35:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:35:58,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:35:58,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:35:58,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045001101] [2021-11-13 18:35:58,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045001101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:35:58,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:35:58,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:35:58,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326732439] [2021-11-13 18:35:58,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:35:58,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:35:58,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:35:58,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:35:58,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:35:58,459 INFO L87 Difference]: Start difference. First operand has 97 states, 95 states have (on average 1.736842105263158) internal successors, (165), 96 states have internal predecessors, (165), 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 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-13 18:35:58,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:35:58,597 INFO L93 Difference]: Finished difference Result 215 states and 350 transitions. [2021-11-13 18:35:58,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:35:58,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2021-11-13 18:35:58,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:35:58,622 INFO L225 Difference]: With dead ends: 215 [2021-11-13 18:35:58,622 INFO L226 Difference]: Without dead ends: 146 [2021-11-13 18:35:58,627 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 [2021-11-13 18:35:58,633 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 115 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.28ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.63ms IncrementalHoareTripleChecker+Time [2021-11-13 18:35:58,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 341 Invalid, 8 Unknown, 0 Unchecked, 12.28ms Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 30.63ms Time] [2021-11-13 18:35:58,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-13 18:35:58,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2021-11-13 18:35:58,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.4615384615384615) internal successors, (209), 143 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:35:58,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 209 transitions. [2021-11-13 18:35:58,740 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 209 transitions. Word has length 59 [2021-11-13 18:35:58,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:35:58,742 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 209 transitions. [2021-11-13 18:35:58,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-13 18:35:58,744 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 209 transitions. [2021-11-13 18:35:58,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-13 18:35:58,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:35:58,752 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] [2021-11-13 18:35:58,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:35:58,753 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:35:58,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:35:58,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1265777508, now seen corresponding path program 1 times [2021-11-13 18:35:58,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:35:58,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125062303] [2021-11-13 18:35:58,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:35:58,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:35:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:35:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:35:58,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:35:58,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125062303] [2021-11-13 18:35:58,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125062303] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:35:58,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:35:58,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:35:58,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584617499] [2021-11-13 18:35:58,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:35:58,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:35:58,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:35:58,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:35:58,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:35:58,903 INFO L87 Difference]: Start difference. First operand 144 states and 209 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-11-13 18:35:58,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:35:58,979 INFO L93 Difference]: Finished difference Result 348 states and 533 transitions. [2021-11-13 18:35:58,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:35:58,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2021-11-13 18:35:58,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:35:58,988 INFO L225 Difference]: With dead ends: 348 [2021-11-13 18:35:58,988 INFO L226 Difference]: Without dead ends: 238 [2021-11-13 18:35:58,995 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 [2021-11-13 18:35:58,997 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 80 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.64ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.36ms IncrementalHoareTripleChecker+Time [2021-11-13 18:35:58,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 293 Invalid, 7 Unknown, 0 Unchecked, 2.64ms Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 31.36ms Time] [2021-11-13 18:35:59,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-11-13 18:35:59,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2021-11-13 18:35:59,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.5106382978723405) internal successors, (355), 235 states have internal predecessors, (355), 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) [2021-11-13 18:35:59,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 355 transitions. [2021-11-13 18:35:59,052 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 355 transitions. Word has length 60 [2021-11-13 18:35:59,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:35:59,053 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 355 transitions. [2021-11-13 18:35:59,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-11-13 18:35:59,053 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 355 transitions. [2021-11-13 18:35:59,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-13 18:35:59,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:35:59,055 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] [2021-11-13 18:35:59,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:35:59,056 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:35:59,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:35:59,057 INFO L85 PathProgramCache]: Analyzing trace with hash -943758039, now seen corresponding path program 1 times [2021-11-13 18:35:59,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:35:59,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820254181] [2021-11-13 18:35:59,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:35:59,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:35:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:35:59,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:35:59,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:35:59,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820254181] [2021-11-13 18:35:59,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820254181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:35:59,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:35:59,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:35:59,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726455114] [2021-11-13 18:35:59,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:35:59,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:35:59,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:35:59,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:35:59,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:35:59,174 INFO L87 Difference]: Start difference. First operand 236 states and 355 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2021-11-13 18:35:59,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:35:59,244 INFO L93 Difference]: Finished difference Result 608 states and 945 transitions. [2021-11-13 18:35:59,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:35:59,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2021-11-13 18:35:59,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:35:59,250 INFO L225 Difference]: With dead ends: 608 [2021-11-13 18:35:59,250 INFO L226 Difference]: Without dead ends: 406 [2021-11-13 18:35:59,255 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 [2021-11-13 18:35:59,262 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 75 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.81ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.32ms IncrementalHoareTripleChecker+Time [2021-11-13 18:35:59,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 289 Invalid, 7 Unknown, 0 Unchecked, 1.81ms Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 32.32ms Time] [2021-11-13 18:35:59,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-11-13 18:35:59,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 404. [2021-11-13 18:35:59,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 1.5359801488833746) internal successors, (619), 403 states have internal predecessors, (619), 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) [2021-11-13 18:35:59,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 619 transitions. [2021-11-13 18:35:59,352 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 619 transitions. Word has length 61 [2021-11-13 18:35:59,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:35:59,355 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 619 transitions. [2021-11-13 18:35:59,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2021-11-13 18:35:59,355 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 619 transitions. [2021-11-13 18:35:59,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-13 18:35:59,358 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:35:59,358 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] [2021-11-13 18:35:59,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:35:59,359 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:35:59,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:35:59,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1997598018, now seen corresponding path program 1 times [2021-11-13 18:35:59,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:35:59,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961351676] [2021-11-13 18:35:59,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:35:59,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:35:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:35:59,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:35:59,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:35:59,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961351676] [2021-11-13 18:35:59,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961351676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:35:59,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:35:59,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:35:59,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272262701] [2021-11-13 18:35:59,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:35:59,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:35:59,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:35:59,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:35:59,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:35:59,448 INFO L87 Difference]: Start difference. First operand 404 states and 619 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-11-13 18:35:59,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:35:59,500 INFO L93 Difference]: Finished difference Result 1080 states and 1685 transitions. [2021-11-13 18:35:59,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:35:59,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2021-11-13 18:35:59,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:35:59,506 INFO L225 Difference]: With dead ends: 1080 [2021-11-13 18:35:59,506 INFO L226 Difference]: Without dead ends: 710 [2021-11-13 18:35:59,508 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 [2021-11-13 18:35:59,509 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 70 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.77ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.03ms IncrementalHoareTripleChecker+Time [2021-11-13 18:35:59,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 285 Invalid, 7 Unknown, 0 Unchecked, 1.77ms Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 13.03ms Time] [2021-11-13 18:35:59,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2021-11-13 18:35:59,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 708. [2021-11-13 18:35:59,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 707 states have (on average 1.5431400282885432) internal successors, (1091), 707 states have internal predecessors, (1091), 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) [2021-11-13 18:35:59,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1091 transitions. [2021-11-13 18:35:59,560 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1091 transitions. Word has length 62 [2021-11-13 18:35:59,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:35:59,561 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 1091 transitions. [2021-11-13 18:35:59,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-11-13 18:35:59,561 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1091 transitions. [2021-11-13 18:35:59,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-13 18:35:59,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:35:59,563 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] [2021-11-13 18:35:59,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:35:59,563 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:35:59,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:35:59,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1910647641, now seen corresponding path program 1 times [2021-11-13 18:35:59,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:35:59,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309798923] [2021-11-13 18:35:59,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:35:59,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:35:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:35:59,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:35:59,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:35:59,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309798923] [2021-11-13 18:35:59,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309798923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:35:59,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:35:59,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:35:59,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137658960] [2021-11-13 18:35:59,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:35:59,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:35:59,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:35:59,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:35:59,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:35:59,633 INFO L87 Difference]: Start difference. First operand 708 states and 1091 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2021-11-13 18:35:59,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:35:59,742 INFO L93 Difference]: Finished difference Result 1928 states and 2997 transitions. [2021-11-13 18:35:59,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:35:59,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2021-11-13 18:35:59,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:35:59,753 INFO L225 Difference]: With dead ends: 1928 [2021-11-13 18:35:59,753 INFO L226 Difference]: Without dead ends: 1254 [2021-11-13 18:35:59,755 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 [2021-11-13 18:35:59,756 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 65 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.34ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.95ms IncrementalHoareTripleChecker+Time [2021-11-13 18:35:59,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 281 Invalid, 7 Unknown, 0 Unchecked, 1.34ms Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 13.95ms Time] [2021-11-13 18:35:59,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2021-11-13 18:35:59,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1252. [2021-11-13 18:35:59,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 1.5371702637889688) internal successors, (1923), 1251 states have internal predecessors, (1923), 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) [2021-11-13 18:35:59,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1923 transitions. [2021-11-13 18:35:59,842 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1923 transitions. Word has length 63 [2021-11-13 18:35:59,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:35:59,842 INFO L470 AbstractCegarLoop]: Abstraction has 1252 states and 1923 transitions. [2021-11-13 18:35:59,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2021-11-13 18:35:59,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1923 transitions. [2021-11-13 18:35:59,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-13 18:35:59,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:35:59,844 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] [2021-11-13 18:35:59,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:35:59,845 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:35:59,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:35:59,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2007440880, now seen corresponding path program 1 times [2021-11-13 18:35:59,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:35:59,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033069711] [2021-11-13 18:35:59,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:35:59,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:35:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:35:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:35:59,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:35:59,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033069711] [2021-11-13 18:35:59,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033069711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:35:59,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:35:59,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:35:59,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286919860] [2021-11-13 18:35:59,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:35:59,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:35:59,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:35:59,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:35:59,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:35:59,948 INFO L87 Difference]: Start difference. First operand 1252 states and 1923 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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) [2021-11-13 18:36:01,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:01,132 INFO L93 Difference]: Finished difference Result 13432 states and 20813 transitions. [2021-11-13 18:36:01,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:36:01,133 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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 64 [2021-11-13 18:36:01,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:01,225 INFO L225 Difference]: With dead ends: 13432 [2021-11-13 18:36:01,225 INFO L226 Difference]: Without dead ends: 12214 [2021-11-13 18:36:01,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-13 18:36:01,237 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 1155 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 103.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.46ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 128.08ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:01,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1155 Valid, 1423 Invalid, 119 Unknown, 0 Unchecked, 11.46ms Time], IncrementalHoareTripleChecker [10 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 128.08ms Time] [2021-11-13 18:36:01,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12214 states. [2021-11-13 18:36:01,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12214 to 2468. [2021-11-13 18:36:01,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 2467 states have (on average 1.5188488042156465) internal successors, (3747), 2467 states have internal predecessors, (3747), 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) [2021-11-13 18:36:01,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 3747 transitions. [2021-11-13 18:36:01,694 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 3747 transitions. Word has length 64 [2021-11-13 18:36:01,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:01,697 INFO L470 AbstractCegarLoop]: Abstraction has 2468 states and 3747 transitions. [2021-11-13 18:36:01,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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) [2021-11-13 18:36:01,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 3747 transitions. [2021-11-13 18:36:01,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 18:36:01,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:01,703 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] [2021-11-13 18:36:01,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:36:01,704 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:01,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:01,705 INFO L85 PathProgramCache]: Analyzing trace with hash -190448501, now seen corresponding path program 1 times [2021-11-13 18:36:01,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:01,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577383211] [2021-11-13 18:36:01,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:01,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:02,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:36:02,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:02,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577383211] [2021-11-13 18:36:02,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577383211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:02,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:02,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:36:02,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903915265] [2021-11-13 18:36:02,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:02,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:36:02,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:02,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:36:02,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:36:02,076 INFO L87 Difference]: Start difference. First operand 2468 states and 3747 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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) [2021-11-13 18:36:02,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:02,563 INFO L93 Difference]: Finished difference Result 4904 states and 7461 transitions. [2021-11-13 18:36:02,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:36:02,563 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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 66 [2021-11-13 18:36:02,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:02,581 INFO L225 Difference]: With dead ends: 4904 [2021-11-13 18:36:02,581 INFO L226 Difference]: Without dead ends: 2470 [2021-11-13 18:36:02,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:36:02,586 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 251 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.62ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.11ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:02,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 582 Invalid, 74 Unknown, 0 Unchecked, 3.62ms Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 73.11ms Time] [2021-11-13 18:36:02,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2021-11-13 18:36:02,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2468. [2021-11-13 18:36:02,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 2467 states have (on average 1.5058775841102554) internal successors, (3715), 2467 states have internal predecessors, (3715), 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) [2021-11-13 18:36:02,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 3715 transitions. [2021-11-13 18:36:02,870 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 3715 transitions. Word has length 66 [2021-11-13 18:36:02,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:02,871 INFO L470 AbstractCegarLoop]: Abstraction has 2468 states and 3715 transitions. [2021-11-13 18:36:02,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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) [2021-11-13 18:36:02,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 3715 transitions. [2021-11-13 18:36:02,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 18:36:02,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:02,872 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] [2021-11-13 18:36:02,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:36:02,873 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:02,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:02,873 INFO L85 PathProgramCache]: Analyzing trace with hash -211451156, now seen corresponding path program 1 times [2021-11-13 18:36:02,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:02,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278948538] [2021-11-13 18:36:02,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:02,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:02,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:36:02,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:02,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278948538] [2021-11-13 18:36:02,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278948538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:02,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:02,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:36:02,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366876185] [2021-11-13 18:36:02,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:02,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:36:02,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:02,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:36:02,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:36:02,926 INFO L87 Difference]: Start difference. First operand 2468 states and 3715 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-11-13 18:36:03,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:03,298 INFO L93 Difference]: Finished difference Result 6074 states and 9159 transitions. [2021-11-13 18:36:03,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:36:03,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2021-11-13 18:36:03,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:03,325 INFO L225 Difference]: With dead ends: 6074 [2021-11-13 18:36:03,325 INFO L226 Difference]: Without dead ends: 3640 [2021-11-13 18:36:03,329 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 [2021-11-13 18:36:03,330 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 56 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.19ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.05ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:03,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 250 Invalid, 11 Unknown, 0 Unchecked, 1.19ms Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 16.05ms Time] [2021-11-13 18:36:03,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2021-11-13 18:36:03,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3638. [2021-11-13 18:36:03,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 1.4927137750893593) internal successors, (5429), 3637 states have internal predecessors, (5429), 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) [2021-11-13 18:36:03,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 5429 transitions. [2021-11-13 18:36:03,806 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 5429 transitions. Word has length 66 [2021-11-13 18:36:03,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:03,807 INFO L470 AbstractCegarLoop]: Abstraction has 3638 states and 5429 transitions. [2021-11-13 18:36:03,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-11-13 18:36:03,810 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 5429 transitions. [2021-11-13 18:36:03,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-13 18:36:03,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:03,818 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] [2021-11-13 18:36:03,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 18:36:03,819 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:03,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:03,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1610845590, now seen corresponding path program 1 times [2021-11-13 18:36:03,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:03,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364773463] [2021-11-13 18:36:03,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:03,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:03,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:36:03,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:03,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364773463] [2021-11-13 18:36:03,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364773463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:03,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:03,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:36:03,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485988263] [2021-11-13 18:36:03,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:03,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:36:03,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:03,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:36:03,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:36:03,932 INFO L87 Difference]: Start difference. First operand 3638 states and 5429 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 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) [2021-11-13 18:36:04,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:04,693 INFO L93 Difference]: Finished difference Result 9674 states and 14503 transitions. [2021-11-13 18:36:04,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:36:04,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 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 67 [2021-11-13 18:36:04,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:04,729 INFO L225 Difference]: With dead ends: 9674 [2021-11-13 18:36:04,730 INFO L226 Difference]: Without dead ends: 6072 [2021-11-13 18:36:04,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:36:04,736 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 524 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.70ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 161.59ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:04,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 132 Invalid, 105 Unknown, 0 Unchecked, 3.70ms Time], IncrementalHoareTripleChecker [8 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 161.59ms Time] [2021-11-13 18:36:04,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6072 states. [2021-11-13 18:36:05,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6072 to 6070. [2021-11-13 18:36:05,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6070 states, 6069 states have (on average 1.490360850222442) internal successors, (9045), 6069 states have internal predecessors, (9045), 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) [2021-11-13 18:36:05,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6070 states to 6070 states and 9045 transitions. [2021-11-13 18:36:05,416 INFO L78 Accepts]: Start accepts. Automaton has 6070 states and 9045 transitions. Word has length 67 [2021-11-13 18:36:05,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:05,417 INFO L470 AbstractCegarLoop]: Abstraction has 6070 states and 9045 transitions. [2021-11-13 18:36:05,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 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) [2021-11-13 18:36:05,417 INFO L276 IsEmpty]: Start isEmpty. Operand 6070 states and 9045 transitions. [2021-11-13 18:36:05,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-13 18:36:05,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:05,418 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] [2021-11-13 18:36:05,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 18:36:05,419 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:05,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:05,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1242574363, now seen corresponding path program 1 times [2021-11-13 18:36:05,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:05,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137335854] [2021-11-13 18:36:05,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:05,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:05,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:36:05,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:05,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137335854] [2021-11-13 18:36:05,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137335854] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:05,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:05,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:36:05,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341338975] [2021-11-13 18:36:05,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:05,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:36:05,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:05,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:36:05,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:36:05,492 INFO L87 Difference]: Start difference. First operand 6070 states and 9045 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 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) [2021-11-13 18:36:06,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:06,342 INFO L93 Difference]: Finished difference Result 12104 states and 18054 transitions. [2021-11-13 18:36:06,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:36:06,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 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 67 [2021-11-13 18:36:06,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:06,365 INFO L225 Difference]: With dead ends: 12104 [2021-11-13 18:36:06,365 INFO L226 Difference]: Without dead ends: 6070 [2021-11-13 18:36:06,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:36:06,378 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 285 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.73ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.66ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:06,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 114 Invalid, 57 Unknown, 0 Unchecked, 1.73ms Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 94.66ms Time] [2021-11-13 18:36:06,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6070 states. [2021-11-13 18:36:06,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6070 to 6070. [2021-11-13 18:36:06,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6070 states, 6069 states have (on average 1.4771791069368925) internal successors, (8965), 6069 states have internal predecessors, (8965), 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) [2021-11-13 18:36:06,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6070 states to 6070 states and 8965 transitions. [2021-11-13 18:36:06,978 INFO L78 Accepts]: Start accepts. Automaton has 6070 states and 8965 transitions. Word has length 67 [2021-11-13 18:36:06,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:06,978 INFO L470 AbstractCegarLoop]: Abstraction has 6070 states and 8965 transitions. [2021-11-13 18:36:06,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 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) [2021-11-13 18:36:06,979 INFO L276 IsEmpty]: Start isEmpty. Operand 6070 states and 8965 transitions. [2021-11-13 18:36:06,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-13 18:36:06,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:06,980 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] [2021-11-13 18:36:06,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 18:36:06,981 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:06,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:06,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1771864864, now seen corresponding path program 1 times [2021-11-13 18:36:06,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:06,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060402805] [2021-11-13 18:36:06,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:06,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:07,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:36:07,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:07,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060402805] [2021-11-13 18:36:07,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060402805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:07,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:07,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:36:07,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712203797] [2021-11-13 18:36:07,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:07,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:36:07,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:07,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:36:07,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:36:07,062 INFO L87 Difference]: Start difference. First operand 6070 states and 8965 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 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) [2021-11-13 18:36:07,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:07,664 INFO L93 Difference]: Finished difference Result 12104 states and 17894 transitions. [2021-11-13 18:36:07,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:36:07,665 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 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 67 [2021-11-13 18:36:07,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:07,682 INFO L225 Difference]: With dead ends: 12104 [2021-11-13 18:36:07,682 INFO L226 Difference]: Without dead ends: 6070 [2021-11-13 18:36:07,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:36:07,694 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 308 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.64ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.70ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:07,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 98 Invalid, 56 Unknown, 0 Unchecked, 1.64ms Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 64.70ms Time] [2021-11-13 18:36:07,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6070 states. [2021-11-13 18:36:08,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6070 to 6070. [2021-11-13 18:36:08,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6070 states, 6069 states have (on average 1.4639973636513428) internal successors, (8885), 6069 states have internal predecessors, (8885), 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) [2021-11-13 18:36:08,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6070 states to 6070 states and 8885 transitions. [2021-11-13 18:36:08,339 INFO L78 Accepts]: Start accepts. Automaton has 6070 states and 8885 transitions. Word has length 67 [2021-11-13 18:36:08,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:08,339 INFO L470 AbstractCegarLoop]: Abstraction has 6070 states and 8885 transitions. [2021-11-13 18:36:08,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 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) [2021-11-13 18:36:08,340 INFO L276 IsEmpty]: Start isEmpty. Operand 6070 states and 8885 transitions. [2021-11-13 18:36:08,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-13 18:36:08,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:08,341 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] [2021-11-13 18:36:08,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 18:36:08,344 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:08,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:08,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1643779557, now seen corresponding path program 1 times [2021-11-13 18:36:08,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:08,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988656613] [2021-11-13 18:36:08,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:08,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:08,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:36:08,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:08,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988656613] [2021-11-13 18:36:08,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988656613] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:08,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:08,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:36:08,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558725428] [2021-11-13 18:36:08,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:08,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:36:08,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:08,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:36:08,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:36:08,491 INFO L87 Difference]: Start difference. First operand 6070 states and 8885 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2021-11-13 18:36:09,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:09,825 INFO L93 Difference]: Finished difference Result 11550 states and 16828 transitions. [2021-11-13 18:36:09,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:36:09,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2021-11-13 18:36:09,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:09,856 INFO L225 Difference]: With dead ends: 11550 [2021-11-13 18:36:09,857 INFO L226 Difference]: Without dead ends: 11548 [2021-11-13 18:36:09,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:36:09,861 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 170 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.03ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.14ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:09,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 575 Invalid, 26 Unknown, 0 Unchecked, 2.03ms Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 26.14ms Time] [2021-11-13 18:36:09,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11548 states. [2021-11-13 18:36:10,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11548 to 6326. [2021-11-13 18:36:10,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6326 states, 6325 states have (on average 1.4426877470355732) internal successors, (9125), 6325 states have internal predecessors, (9125), 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) [2021-11-13 18:36:10,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6326 states to 6326 states and 9125 transitions. [2021-11-13 18:36:10,549 INFO L78 Accepts]: Start accepts. Automaton has 6326 states and 9125 transitions. Word has length 67 [2021-11-13 18:36:10,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:10,550 INFO L470 AbstractCegarLoop]: Abstraction has 6326 states and 9125 transitions. [2021-11-13 18:36:10,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2021-11-13 18:36:10,550 INFO L276 IsEmpty]: Start isEmpty. Operand 6326 states and 9125 transitions. [2021-11-13 18:36:10,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 18:36:10,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:10,556 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-13 18:36:10,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 18:36:10,556 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:10,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:10,557 INFO L85 PathProgramCache]: Analyzing trace with hash 2083961666, now seen corresponding path program 1 times [2021-11-13 18:36:10,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:10,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045626322] [2021-11-13 18:36:10,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:10,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 18:36:10,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:10,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045626322] [2021-11-13 18:36:10,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045626322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:10,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:10,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:36:10,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655283457] [2021-11-13 18:36:10,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:10,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:36:10,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:10,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:36:10,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:36:10,696 INFO L87 Difference]: Start difference. First operand 6326 states and 9125 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 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) [2021-11-13 18:36:13,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:13,386 INFO L93 Difference]: Finished difference Result 39762 states and 57371 transitions. [2021-11-13 18:36:13,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:36:13,387 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 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 93 [2021-11-13 18:36:13,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:13,489 INFO L225 Difference]: With dead ends: 39762 [2021-11-13 18:36:13,489 INFO L226 Difference]: Without dead ends: 33472 [2021-11-13 18:36:13,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:36:13,508 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 792 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.94ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 101.13ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:13,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [792 Valid, 902 Invalid, 101 Unknown, 0 Unchecked, 7.94ms Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 101.13ms Time] [2021-11-13 18:36:13,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33472 states. [2021-11-13 18:36:14,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33472 to 12614. [2021-11-13 18:36:14,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12614 states, 12613 states have (on average 1.437643700943471) internal successors, (18133), 12613 states have internal predecessors, (18133), 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) [2021-11-13 18:36:14,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12614 states to 12614 states and 18133 transitions. [2021-11-13 18:36:14,943 INFO L78 Accepts]: Start accepts. Automaton has 12614 states and 18133 transitions. Word has length 93 [2021-11-13 18:36:14,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:14,944 INFO L470 AbstractCegarLoop]: Abstraction has 12614 states and 18133 transitions. [2021-11-13 18:36:14,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 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) [2021-11-13 18:36:14,944 INFO L276 IsEmpty]: Start isEmpty. Operand 12614 states and 18133 transitions. [2021-11-13 18:36:14,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 18:36:14,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:14,950 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-13 18:36:14,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-13 18:36:14,950 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:14,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:14,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1513365710, now seen corresponding path program 1 times [2021-11-13 18:36:14,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:14,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138253455] [2021-11-13 18:36:14,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:14,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:15,046 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-13 18:36:15,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:15,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138253455] [2021-11-13 18:36:15,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138253455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:15,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:15,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:36:15,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035419725] [2021-11-13 18:36:15,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:15,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:36:15,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:15,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:36:15,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:36:15,049 INFO L87 Difference]: Start difference. First operand 12614 states and 18133 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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) [2021-11-13 18:36:18,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:18,564 INFO L93 Difference]: Finished difference Result 46050 states and 66379 transitions. [2021-11-13 18:36:18,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:36:18,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 93 [2021-11-13 18:36:18,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:18,657 INFO L225 Difference]: With dead ends: 46050 [2021-11-13 18:36:18,657 INFO L226 Difference]: Without dead ends: 39760 [2021-11-13 18:36:18,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:36:18,679 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 849 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.32ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.31ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:18,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [849 Valid, 861 Invalid, 85 Unknown, 0 Unchecked, 6.32ms Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 81.31ms Time] [2021-11-13 18:36:18,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39760 states. [2021-11-13 18:36:21,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39760 to 22054. [2021-11-13 18:36:21,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22054 states, 22053 states have (on average 1.4316872987802114) internal successors, (31573), 22053 states have internal predecessors, (31573), 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) [2021-11-13 18:36:21,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22054 states to 22054 states and 31573 transitions. [2021-11-13 18:36:21,907 INFO L78 Accepts]: Start accepts. Automaton has 22054 states and 31573 transitions. Word has length 93 [2021-11-13 18:36:21,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:21,907 INFO L470 AbstractCegarLoop]: Abstraction has 22054 states and 31573 transitions. [2021-11-13 18:36:21,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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) [2021-11-13 18:36:21,908 INFO L276 IsEmpty]: Start isEmpty. Operand 22054 states and 31573 transitions. [2021-11-13 18:36:21,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 18:36:21,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:21,914 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-13 18:36:21,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-13 18:36:21,915 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:21,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:21,915 INFO L85 PathProgramCache]: Analyzing trace with hash 359419604, now seen corresponding path program 1 times [2021-11-13 18:36:21,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:21,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672570973] [2021-11-13 18:36:21,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:21,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:22,026 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-13 18:36:22,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:22,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672570973] [2021-11-13 18:36:22,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672570973] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:22,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:22,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:36:22,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656178321] [2021-11-13 18:36:22,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:22,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:36:22,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:22,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:36:22,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:36:22,032 INFO L87 Difference]: Start difference. First operand 22054 states and 31573 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 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) [2021-11-13 18:36:25,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:25,778 INFO L93 Difference]: Finished difference Result 52338 states and 75387 transitions. [2021-11-13 18:36:25,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:36:25,779 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 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 93 [2021-11-13 18:36:25,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:25,865 INFO L225 Difference]: With dead ends: 52338 [2021-11-13 18:36:25,865 INFO L226 Difference]: Without dead ends: 46048 [2021-11-13 18:36:25,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:36:25,886 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 793 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.33ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.75ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:25,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 885 Invalid, 90 Unknown, 0 Unchecked, 5.33ms Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 74.75ms Time] [2021-11-13 18:36:25,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46048 states. [2021-11-13 18:36:29,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46048 to 28342. [2021-11-13 18:36:29,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28342 states, 28341 states have (on average 1.4318831375039696) internal successors, (40581), 28341 states have internal predecessors, (40581), 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) [2021-11-13 18:36:29,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28342 states to 28342 states and 40581 transitions. [2021-11-13 18:36:29,569 INFO L78 Accepts]: Start accepts. Automaton has 28342 states and 40581 transitions. Word has length 93 [2021-11-13 18:36:29,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:29,571 INFO L470 AbstractCegarLoop]: Abstraction has 28342 states and 40581 transitions. [2021-11-13 18:36:29,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 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) [2021-11-13 18:36:29,571 INFO L276 IsEmpty]: Start isEmpty. Operand 28342 states and 40581 transitions. [2021-11-13 18:36:29,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 18:36:29,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:29,587 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-13 18:36:29,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-13 18:36:29,588 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:29,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:29,589 INFO L85 PathProgramCache]: Analyzing trace with hash 655465032, now seen corresponding path program 1 times [2021-11-13 18:36:29,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:29,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848039708] [2021-11-13 18:36:29,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:29,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:29,714 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-13 18:36:29,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:29,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848039708] [2021-11-13 18:36:29,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848039708] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:29,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:29,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:36:29,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315908483] [2021-11-13 18:36:29,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:29,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:36:29,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:29,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:36:29,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:36:29,720 INFO L87 Difference]: Start difference. First operand 28342 states and 40581 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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) [2021-11-13 18:36:35,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:35,481 INFO L93 Difference]: Finished difference Result 58626 states and 84395 transitions. [2021-11-13 18:36:35,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:36:35,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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 93 [2021-11-13 18:36:35,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:35,591 INFO L225 Difference]: With dead ends: 58626 [2021-11-13 18:36:35,591 INFO L226 Difference]: Without dead ends: 52336 [2021-11-13 18:36:35,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:36:35,613 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 733 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.72ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.48ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:35,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [733 Valid, 988 Invalid, 101 Unknown, 0 Unchecked, 5.72ms Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 79.48ms Time] [2021-11-13 18:36:35,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52336 states. [2021-11-13 18:36:39,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52336 to 34630. [2021-11-13 18:36:39,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34630 states, 34629 states have (on average 1.432007854688267) internal successors, (49589), 34629 states have internal predecessors, (49589), 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) [2021-11-13 18:36:39,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34630 states to 34630 states and 49589 transitions. [2021-11-13 18:36:39,828 INFO L78 Accepts]: Start accepts. Automaton has 34630 states and 49589 transitions. Word has length 93 [2021-11-13 18:36:39,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:39,829 INFO L470 AbstractCegarLoop]: Abstraction has 34630 states and 49589 transitions. [2021-11-13 18:36:39,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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) [2021-11-13 18:36:39,829 INFO L276 IsEmpty]: Start isEmpty. Operand 34630 states and 49589 transitions. [2021-11-13 18:36:39,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 18:36:39,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:39,838 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-13 18:36:39,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-13 18:36:39,839 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:39,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:39,839 INFO L85 PathProgramCache]: Analyzing trace with hash -235568196, now seen corresponding path program 1 times [2021-11-13 18:36:39,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:39,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116916967] [2021-11-13 18:36:39,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:39,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:39,953 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 18:36:39,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:39,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116916967] [2021-11-13 18:36:39,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116916967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:39,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:39,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:36:39,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872802954] [2021-11-13 18:36:39,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:39,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:36:39,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:39,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:36:39,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:36:39,957 INFO L87 Difference]: Start difference. First operand 34630 states and 49589 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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) [2021-11-13 18:36:46,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:46,052 INFO L93 Difference]: Finished difference Result 62578 states and 90139 transitions. [2021-11-13 18:36:46,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:36:46,067 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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 93 [2021-11-13 18:36:46,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:46,166 INFO L225 Difference]: With dead ends: 62578 [2021-11-13 18:36:46,166 INFO L226 Difference]: Without dead ends: 57456 [2021-11-13 18:36:46,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:36:46,189 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 796 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.15ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104.99ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:46,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [796 Valid, 1027 Invalid, 101 Unknown, 0 Unchecked, 7.15ms Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 104.99ms Time] [2021-11-13 18:36:46,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57456 states. [2021-11-13 18:36:50,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57456 to 39750. [2021-11-13 18:36:50,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39750 states, 39749 states have (on average 1.433520340134343) internal successors, (56981), 39749 states have internal predecessors, (56981), 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) [2021-11-13 18:36:50,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39750 states to 39750 states and 56981 transitions. [2021-11-13 18:36:50,823 INFO L78 Accepts]: Start accepts. Automaton has 39750 states and 56981 transitions. Word has length 93 [2021-11-13 18:36:50,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:50,823 INFO L470 AbstractCegarLoop]: Abstraction has 39750 states and 56981 transitions. [2021-11-13 18:36:50,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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) [2021-11-13 18:36:50,823 INFO L276 IsEmpty]: Start isEmpty. Operand 39750 states and 56981 transitions. [2021-11-13 18:36:50,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-13 18:36:50,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:50,832 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-13 18:36:50,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-13 18:36:50,833 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:50,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:50,834 INFO L85 PathProgramCache]: Analyzing trace with hash -2095026606, now seen corresponding path program 1 times [2021-11-13 18:36:50,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:50,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198839459] [2021-11-13 18:36:50,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:50,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:51,173 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:36:51,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:51,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198839459] [2021-11-13 18:36:51,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198839459] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:36:51,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669248329] [2021-11-13 18:36:51,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:51,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:36:51,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d6007c-100d-4f93-85e5-39d46f5a6ae6/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:36:51,178 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d6007c-100d-4f93-85e5-39d46f5a6ae6/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:36:51,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d6007c-100d-4f93-85e5-39d46f5a6ae6/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:36:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:51,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-13 18:36:51,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:36:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:36:52,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:36:53,207 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:36:53,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669248329] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:36:53,208 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:36:53,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 22 [2021-11-13 18:36:53,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995674404] [2021-11-13 18:36:53,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:36:53,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-13 18:36:53,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:53,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-13 18:36:53,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2021-11-13 18:36:53,212 INFO L87 Difference]: Start difference. First operand 39750 states and 56981 transitions. Second operand has 22 states, 22 states have (on average 12.363636363636363) internal successors, (272), 22 states have internal predecessors, (272), 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)