./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be252ee4-3f2f-49b1-b67f-8999094e243b/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be252ee4-3f2f-49b1-b67f-8999094e243b/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be252ee4-3f2f-49b1-b67f-8999094e243b/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be252ee4-3f2f-49b1-b67f-8999094e243b/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be252ee4-3f2f-49b1-b67f-8999094e243b/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be252ee4-3f2f-49b1-b67f-8999094e243b/bin/uautomizer-tBqnrhUYjU --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 75148efb6834777eda3fcaa661a915022d94b95e28e7fe8a697035312ed98f66 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:44:47,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:44:47,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:44:47,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:44:47,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:44:47,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:44:47,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:44:47,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:44:47,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:44:47,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:44:47,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:44:47,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:44:47,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:44:47,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:44:47,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:44:47,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:44:47,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:44:47,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:44:47,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:44:47,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:44:47,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:44:47,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:44:47,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:44:47,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:44:47,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:44:47,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:44:47,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:44:47,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:44:47,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:44:47,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:44:47,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:44:47,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:44:47,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:44:47,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:44:47,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:44:47,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:44:47,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:44:47,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:44:47,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:44:47,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:44:47,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:44:47,731 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be252ee4-3f2f-49b1-b67f-8999094e243b/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:44:47,756 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:44:47,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:44:47,757 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:44:47,757 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:44:47,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:44:47,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:44:47,759 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:44:47,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:44:47,759 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:44:47,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:44:47,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:44:47,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:44:47,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:44:47,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:44:47,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:44:47,761 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:44:47,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:44:47,761 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:44:47,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:44:47,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:44:47,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:44:47,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:44:47,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:44:47,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:44:47,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:44:47,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:44:47,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:44:47,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:44:47,764 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:44:47,764 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:44:47,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:44:47,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:44:47,765 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_be252ee4-3f2f-49b1-b67f-8999094e243b/bin/uautomizer-tBqnrhUYjU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be252ee4-3f2f-49b1-b67f-8999094e243b/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75148efb6834777eda3fcaa661a915022d94b95e28e7fe8a697035312ed98f66 [2021-11-02 22:44:48,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:44:48,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:44:48,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:44:48,076 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:44:48,077 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:44:48,078 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be252ee4-3f2f-49b1-b67f-8999094e243b/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2021-11-02 22:44:48,168 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be252ee4-3f2f-49b1-b67f-8999094e243b/bin/uautomizer-tBqnrhUYjU/data/c5e393401/dbce89123b2b4e70ae37efc7f9afe80b/FLAG74677db92 [2021-11-02 22:44:49,271 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:44:49,272 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be252ee4-3f2f-49b1-b67f-8999094e243b/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2021-11-02 22:44:49,333 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be252ee4-3f2f-49b1-b67f-8999094e243b/bin/uautomizer-tBqnrhUYjU/data/c5e393401/dbce89123b2b4e70ae37efc7f9afe80b/FLAG74677db92 [2021-11-02 22:44:49,595 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be252ee4-3f2f-49b1-b67f-8999094e243b/bin/uautomizer-tBqnrhUYjU/data/c5e393401/dbce89123b2b4e70ae37efc7f9afe80b [2021-11-02 22:44:49,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:44:49,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:44:49,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:44:49,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:44:49,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:44:49,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:44:49" (1/1) ... [2021-11-02 22:44:49,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d099df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:44:49, skipping insertion in model container [2021-11-02 22:44:49,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:44:49" (1/1) ... [2021-11-02 22:44:49,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:44:49,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:44:50,436 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_be252ee4-3f2f-49b1-b67f-8999094e243b/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label09.c[15651,15664] [2021-11-02 22:44:50,527 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_be252ee4-3f2f-49b1-b67f-8999094e243b/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label09.c[23156,23169] [2021-11-02 22:44:51,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:44:51,876 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:44:51,984 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_be252ee4-3f2f-49b1-b67f-8999094e243b/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label09.c[15651,15664] [2021-11-02 22:44:52,007 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_be252ee4-3f2f-49b1-b67f-8999094e243b/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label09.c[23156,23169] [2021-11-02 22:44:52,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:44:52,731 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:44:52,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:44:52 WrapperNode [2021-11-02 22:44:52,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:44:52,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:44:52,734 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:44:52,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:44:52,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:44:52" (1/1) ... [2021-11-02 22:44:52,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:44:52" (1/1) ... [2021-11-02 22:44:53,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:44:53,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:44:53,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:44:53,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:44:53,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:44:52" (1/1) ... [2021-11-02 22:44:53,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:44:52" (1/1) ... [2021-11-02 22:44:53,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:44:52" (1/1) ... [2021-11-02 22:44:53,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:44:52" (1/1) ... [2021-11-02 22:44:53,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:44:52" (1/1) ... [2021-11-02 22:44:53,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:44:52" (1/1) ... [2021-11-02 22:44:53,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:44:52" (1/1) ... [2021-11-02 22:44:54,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:44:54,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:44:54,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:44:54,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:44:54,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:44:52" (1/1) ... [2021-11-02 22:44:54,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:44:54,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be252ee4-3f2f-49b1-b67f-8999094e243b/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:44:54,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be252ee4-3f2f-49b1-b67f-8999094e243b/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:44:54,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be252ee4-3f2f-49b1-b67f-8999094e243b/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:44:54,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:44:54,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:44:54,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:44:54,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:45:00,061 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:45:00,061 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2021-11-02 22:45:00,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:45:00 BoogieIcfgContainer [2021-11-02 22:45:00,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:45:00,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:45:00,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:45:00,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:45:00,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:44:49" (1/3) ... [2021-11-02 22:45:00,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e08443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:45:00, skipping insertion in model container [2021-11-02 22:45:00,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:44:52" (2/3) ... [2021-11-02 22:45:00,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e08443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:45:00, skipping insertion in model container [2021-11-02 22:45:00,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:45:00" (3/3) ... [2021-11-02 22:45:00,077 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2021-11-02 22:45:00,083 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:45:00,084 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-02 22:45:00,148 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:45:00,156 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:45:00,156 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-02 22:45:00,200 INFO L276 IsEmpty]: Start isEmpty. Operand has 927 states, 924 states have (on average 1.8993506493506493) internal successors, (1755), 926 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:00,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 22:45:00,220 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:00,221 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:45:00,222 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:45:00,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:00,231 INFO L85 PathProgramCache]: Analyzing trace with hash -321533933, now seen corresponding path program 1 times [2021-11-02 22:45:00,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:45:00,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499799980] [2021-11-02 22:45:00,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:00,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:45:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:45:00,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:45:00,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:45:00,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499799980] [2021-11-02 22:45:00,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499799980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:45:00,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:45:00,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:45:00,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188119598] [2021-11-02 22:45:00,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:45:00,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:45:00,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:45:00,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:45:00,697 INFO L87 Difference]: Start difference. First operand has 927 states, 924 states have (on average 1.8993506493506493) internal successors, (1755), 926 states have internal predecessors, (1755), 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 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:00,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:45:00,797 INFO L93 Difference]: Finished difference Result 1806 states and 3420 transitions. [2021-11-02 22:45:00,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:45:00,798 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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 38 [2021-11-02 22:45:00,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:45:00,834 INFO L225 Difference]: With dead ends: 1806 [2021-11-02 22:45:00,834 INFO L226 Difference]: Without dead ends: 861 [2021-11-02 22:45:00,845 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:45:00,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2021-11-02 22:45:00,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2021-11-02 22:45:00,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 859 states have (on average 1.8882421420256112) internal successors, (1622), 860 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:00,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1622 transitions. [2021-11-02 22:45:00,980 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1622 transitions. Word has length 38 [2021-11-02 22:45:00,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:45:00,981 INFO L470 AbstractCegarLoop]: Abstraction has 861 states and 1622 transitions. [2021-11-02 22:45:00,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:00,981 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1622 transitions. [2021-11-02 22:45:00,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 22:45:00,984 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:00,984 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:45:00,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:45:00,985 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:45:00,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:00,986 INFO L85 PathProgramCache]: Analyzing trace with hash -46774319, now seen corresponding path program 1 times [2021-11-02 22:45:00,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:45:00,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654668448] [2021-11-02 22:45:00,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:00,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:45:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:45:01,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:45:01,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:45:01,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654668448] [2021-11-02 22:45:01,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654668448] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:45:01,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:45:01,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:45:01,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860660724] [2021-11-02 22:45:01,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:45:01,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:45:01,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:45:01,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:45:01,113 INFO L87 Difference]: Start difference. First operand 861 states and 1622 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:01,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:45:01,287 INFO L93 Difference]: Finished difference Result 926 states and 1723 transitions. [2021-11-02 22:45:01,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:45:01,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 38 [2021-11-02 22:45:01,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:45:01,295 INFO L225 Difference]: With dead ends: 926 [2021-11-02 22:45:01,295 INFO L226 Difference]: Without dead ends: 861 [2021-11-02 22:45:01,299 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:45:01,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2021-11-02 22:45:01,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2021-11-02 22:45:01,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 859 states have (on average 1.8416763678696157) internal successors, (1582), 860 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:01,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1582 transitions. [2021-11-02 22:45:01,342 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1582 transitions. Word has length 38 [2021-11-02 22:45:01,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:45:01,343 INFO L470 AbstractCegarLoop]: Abstraction has 861 states and 1582 transitions. [2021-11-02 22:45:01,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:01,344 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1582 transitions. [2021-11-02 22:45:01,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 22:45:01,354 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:01,356 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:45:01,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:45:01,357 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:45:01,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:01,358 INFO L85 PathProgramCache]: Analyzing trace with hash -573497638, now seen corresponding path program 1 times [2021-11-02 22:45:01,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:45:01,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3771196] [2021-11-02 22:45:01,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:01,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:45:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:45:01,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:45:01,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:45:01,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3771196] [2021-11-02 22:45:01,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3771196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:45:01,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:45:01,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:45:01,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743884597] [2021-11-02 22:45:01,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:45:01,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:45:01,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:45:01,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:45:01,688 INFO L87 Difference]: Start difference. First operand 861 states and 1582 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 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) [2021-11-02 22:45:10,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:45:10,730 INFO L93 Difference]: Finished difference Result 3116 states and 5891 transitions. [2021-11-02 22:45:10,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:45:10,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 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 [2021-11-02 22:45:10,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:45:10,749 INFO L225 Difference]: With dead ends: 3116 [2021-11-02 22:45:10,749 INFO L226 Difference]: Without dead ends: 2363 [2021-11-02 22:45:10,751 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:45:10,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2021-11-02 22:45:10,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2363. [2021-11-02 22:45:10,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 2361 states have (on average 1.565438373570521) internal successors, (3696), 2362 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:10,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3696 transitions. [2021-11-02 22:45:10,834 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3696 transitions. Word has length 67 [2021-11-02 22:45:10,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:45:10,837 INFO L470 AbstractCegarLoop]: Abstraction has 2363 states and 3696 transitions. [2021-11-02 22:45:10,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 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) [2021-11-02 22:45:10,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3696 transitions. [2021-11-02 22:45:10,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 22:45:10,842 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:10,842 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:45:10,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:45:10,843 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:45:10,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:10,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1531755293, now seen corresponding path program 1 times [2021-11-02 22:45:10,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:45:10,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745982816] [2021-11-02 22:45:10,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:10,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:45:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:45:10,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:45:10,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:45:10,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745982816] [2021-11-02 22:45:10,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745982816] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:45:10,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:45:10,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:45:10,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958929229] [2021-11-02 22:45:10,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:45:10,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:45:10,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:45:10,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:45:10,970 INFO L87 Difference]: Start difference. First operand 2363 states and 3696 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:11,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:45:11,029 INFO L93 Difference]: Finished difference Result 2479 states and 3880 transitions. [2021-11-02 22:45:11,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:45:11,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-02 22:45:11,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:45:11,050 INFO L225 Difference]: With dead ends: 2479 [2021-11-02 22:45:11,051 INFO L226 Difference]: Without dead ends: 2418 [2021-11-02 22:45:11,053 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:45:11,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2418 states. [2021-11-02 22:45:11,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 2416. [2021-11-02 22:45:11,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2416 states, 2414 states have (on average 1.5662800331400166) internal successors, (3781), 2415 states have internal predecessors, (3781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:11,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2416 states to 2416 states and 3781 transitions. [2021-11-02 22:45:11,141 INFO L78 Accepts]: Start accepts. Automaton has 2416 states and 3781 transitions. Word has length 77 [2021-11-02 22:45:11,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:45:11,143 INFO L470 AbstractCegarLoop]: Abstraction has 2416 states and 3781 transitions. [2021-11-02 22:45:11,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:11,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2416 states and 3781 transitions. [2021-11-02 22:45:11,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 22:45:11,146 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:11,147 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:45:11,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:45:11,148 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:45:11,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:11,149 INFO L85 PathProgramCache]: Analyzing trace with hash 786172563, now seen corresponding path program 1 times [2021-11-02 22:45:11,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:45:11,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359023589] [2021-11-02 22:45:11,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:11,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:45:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:45:11,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:45:11,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:45:11,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359023589] [2021-11-02 22:45:11,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359023589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:45:11,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:45:11,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:45:11,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056993257] [2021-11-02 22:45:11,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:45:11,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:45:11,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:45:11,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:45:11,265 INFO L87 Difference]: Start difference. First operand 2416 states and 3781 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:11,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:45:11,325 INFO L93 Difference]: Finished difference Result 2632 states and 4125 transitions. [2021-11-02 22:45:11,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:45:11,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-02 22:45:11,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:45:11,345 INFO L225 Difference]: With dead ends: 2632 [2021-11-02 22:45:11,345 INFO L226 Difference]: Without dead ends: 2518 [2021-11-02 22:45:11,347 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:45:11,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2021-11-02 22:45:11,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2516. [2021-11-02 22:45:11,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2516 states, 2514 states have (on average 1.5672235481304693) internal successors, (3940), 2515 states have internal predecessors, (3940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:11,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 3940 transitions. [2021-11-02 22:45:11,431 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 3940 transitions. Word has length 77 [2021-11-02 22:45:11,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:45:11,432 INFO L470 AbstractCegarLoop]: Abstraction has 2516 states and 3940 transitions. [2021-11-02 22:45:11,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:11,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 3940 transitions. [2021-11-02 22:45:11,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 22:45:11,433 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:11,434 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:45:11,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:45:11,434 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:45:11,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:11,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1153858295, now seen corresponding path program 1 times [2021-11-02 22:45:11,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:45:11,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748813076] [2021-11-02 22:45:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:11,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:45:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:45:11,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:45:11,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:45:11,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748813076] [2021-11-02 22:45:11,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748813076] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:45:11,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:45:11,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:45:11,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854829807] [2021-11-02 22:45:11,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:45:11,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:45:11,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:45:11,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:45:11,510 INFO L87 Difference]: Start difference. First operand 2516 states and 3940 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:11,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:45:11,584 INFO L93 Difference]: Finished difference Result 2920 states and 4582 transitions. [2021-11-02 22:45:11,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:45:11,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-02 22:45:11,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:45:11,611 INFO L225 Difference]: With dead ends: 2920 [2021-11-02 22:45:11,611 INFO L226 Difference]: Without dead ends: 2706 [2021-11-02 22:45:11,613 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:45:11,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2021-11-02 22:45:11,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 2704. [2021-11-02 22:45:11,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2704 states, 2702 states have (on average 1.5677276091783863) internal successors, (4236), 2703 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:11,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2704 states to 2704 states and 4236 transitions. [2021-11-02 22:45:11,726 INFO L78 Accepts]: Start accepts. Automaton has 2704 states and 4236 transitions. Word has length 77 [2021-11-02 22:45:11,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:45:11,727 INFO L470 AbstractCegarLoop]: Abstraction has 2704 states and 4236 transitions. [2021-11-02 22:45:11,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:11,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2704 states and 4236 transitions. [2021-11-02 22:45:11,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 22:45:11,728 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:11,728 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:45:11,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:45:11,729 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:45:11,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:11,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1546824319, now seen corresponding path program 1 times [2021-11-02 22:45:11,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:45:11,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134930180] [2021-11-02 22:45:11,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:11,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:45:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:45:11,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:45:11,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:45:11,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134930180] [2021-11-02 22:45:11,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134930180] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:45:11,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:45:11,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:45:11,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849654618] [2021-11-02 22:45:11,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:45:11,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:45:11,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:45:11,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:45:11,836 INFO L87 Difference]: Start difference. First operand 2704 states and 4236 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:11,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:45:11,911 INFO L93 Difference]: Finished difference Result 3460 states and 5430 transitions. [2021-11-02 22:45:11,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:45:11,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-02 22:45:11,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:45:11,935 INFO L225 Difference]: With dead ends: 3460 [2021-11-02 22:45:11,935 INFO L226 Difference]: Without dead ends: 3058 [2021-11-02 22:45:11,940 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:45:11,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2021-11-02 22:45:12,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 3056. [2021-11-02 22:45:12,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3056 states, 3054 states have (on average 1.5664702030124427) internal successors, (4784), 3055 states have internal predecessors, (4784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:12,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3056 states to 3056 states and 4784 transitions. [2021-11-02 22:45:12,051 INFO L78 Accepts]: Start accepts. Automaton has 3056 states and 4784 transitions. Word has length 77 [2021-11-02 22:45:12,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:45:12,052 INFO L470 AbstractCegarLoop]: Abstraction has 3056 states and 4784 transitions. [2021-11-02 22:45:12,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:12,053 INFO L276 IsEmpty]: Start isEmpty. Operand 3056 states and 4784 transitions. [2021-11-02 22:45:12,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 22:45:12,061 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:12,061 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:45:12,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:45:12,062 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:45:12,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:12,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1884617461, now seen corresponding path program 1 times [2021-11-02 22:45:12,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:45:12,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97276216] [2021-11-02 22:45:12,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:12,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:45:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:45:12,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:45:12,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:45:12,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97276216] [2021-11-02 22:45:12,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97276216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:45:12,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:45:12,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:45:12,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039673778] [2021-11-02 22:45:12,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:45:12,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:45:12,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:45:12,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:45:12,148 INFO L87 Difference]: Start difference. First operand 3056 states and 4784 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:12,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:45:12,252 INFO L93 Difference]: Finished difference Result 4468 states and 6994 transitions. [2021-11-02 22:45:12,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:45:12,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-02 22:45:12,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:45:12,279 INFO L225 Difference]: With dead ends: 4468 [2021-11-02 22:45:12,279 INFO L226 Difference]: Without dead ends: 3714 [2021-11-02 22:45:12,282 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:45:12,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2021-11-02 22:45:12,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 3712. [2021-11-02 22:45:12,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3712 states, 3710 states have (on average 1.5611859838274933) internal successors, (5792), 3711 states have internal predecessors, (5792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:12,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 5792 transitions. [2021-11-02 22:45:12,434 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 5792 transitions. Word has length 77 [2021-11-02 22:45:12,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:45:12,434 INFO L470 AbstractCegarLoop]: Abstraction has 3712 states and 5792 transitions. [2021-11-02 22:45:12,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:12,435 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 5792 transitions. [2021-11-02 22:45:12,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 22:45:12,436 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:12,436 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:45:12,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 22:45:12,436 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:45:12,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:12,437 INFO L85 PathProgramCache]: Analyzing trace with hash -2001711063, now seen corresponding path program 1 times [2021-11-02 22:45:12,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:45:12,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451884273] [2021-11-02 22:45:12,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:12,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:45:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:45:12,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:45:12,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:45:12,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451884273] [2021-11-02 22:45:12,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451884273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:45:12,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:45:12,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:45:12,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813508217] [2021-11-02 22:45:12,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:45:12,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:45:12,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:45:12,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:45:12,538 INFO L87 Difference]: Start difference. First operand 3712 states and 5792 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:13,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:45:13,677 INFO L93 Difference]: Finished difference Result 20632 states and 32108 transitions. [2021-11-02 22:45:13,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 22:45:13,677 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-02 22:45:13,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:45:13,764 INFO L225 Difference]: With dead ends: 20632 [2021-11-02 22:45:13,764 INFO L226 Difference]: Without dead ends: 19222 [2021-11-02 22:45:13,773 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-11-02 22:45:13,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19222 states. [2021-11-02 22:45:14,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19222 to 5120. [2021-11-02 22:45:14,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5120 states, 5118 states have (on average 1.5474794841735053) internal successors, (7920), 5119 states have internal predecessors, (7920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:14,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5120 states to 5120 states and 7920 transitions. [2021-11-02 22:45:14,246 INFO L78 Accepts]: Start accepts. Automaton has 5120 states and 7920 transitions. Word has length 77 [2021-11-02 22:45:14,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:45:14,247 INFO L470 AbstractCegarLoop]: Abstraction has 5120 states and 7920 transitions. [2021-11-02 22:45:14,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:14,248 INFO L276 IsEmpty]: Start isEmpty. Operand 5120 states and 7920 transitions. [2021-11-02 22:45:14,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 22:45:14,249 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:14,249 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:45:14,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 22:45:14,251 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:45:14,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:14,252 INFO L85 PathProgramCache]: Analyzing trace with hash -914675591, now seen corresponding path program 1 times [2021-11-02 22:45:14,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:45:14,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057730594] [2021-11-02 22:45:14,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:14,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:45:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:45:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:45:14,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:45:14,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057730594] [2021-11-02 22:45:14,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057730594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:45:14,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:45:14,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:45:14,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62703860] [2021-11-02 22:45:14,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:45:14,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:45:14,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:45:14,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:45:14,331 INFO L87 Difference]: Start difference. First operand 5120 states and 7920 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:14,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:45:14,768 INFO L93 Difference]: Finished difference Result 10404 states and 15954 transitions. [2021-11-02 22:45:14,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:45:14,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-02 22:45:14,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:45:14,788 INFO L225 Difference]: With dead ends: 10404 [2021-11-02 22:45:14,789 INFO L226 Difference]: Without dead ends: 7586 [2021-11-02 22:45:14,795 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:45:14,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7586 states. [2021-11-02 22:45:15,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7586 to 7520. [2021-11-02 22:45:15,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7520 states, 7518 states have (on average 1.5174248470337857) internal successors, (11408), 7519 states have internal predecessors, (11408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:15,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 11408 transitions. [2021-11-02 22:45:15,507 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 11408 transitions. Word has length 79 [2021-11-02 22:45:15,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:45:15,508 INFO L470 AbstractCegarLoop]: Abstraction has 7520 states and 11408 transitions. [2021-11-02 22:45:15,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:15,508 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 11408 transitions. [2021-11-02 22:45:15,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 22:45:15,510 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:15,510 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:45:15,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 22:45:15,511 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:45:15,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:15,512 INFO L85 PathProgramCache]: Analyzing trace with hash -848182079, now seen corresponding path program 1 times [2021-11-02 22:45:15,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:45:15,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904363067] [2021-11-02 22:45:15,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:15,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:45:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:45:15,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:45:15,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:45:15,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904363067] [2021-11-02 22:45:15,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904363067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:45:15,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:45:15,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:45:15,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484563728] [2021-11-02 22:45:15,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:45:15,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:45:15,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:45:15,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:45:15,800 INFO L87 Difference]: Start difference. First operand 7520 states and 11408 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:16,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:45:16,487 INFO L93 Difference]: Finished difference Result 12740 states and 19218 transitions. [2021-11-02 22:45:16,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:45:16,487 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-02 22:45:16,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:45:16,505 INFO L225 Difference]: With dead ends: 12740 [2021-11-02 22:45:16,505 INFO L226 Difference]: Without dead ends: 7522 [2021-11-02 22:45:16,514 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:45:16,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7522 states. [2021-11-02 22:45:16,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7522 to 7520. [2021-11-02 22:45:16,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7520 states, 7518 states have (on average 1.5089119446661345) internal successors, (11344), 7519 states have internal predecessors, (11344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:16,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 11344 transitions. [2021-11-02 22:45:16,989 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 11344 transitions. Word has length 79 [2021-11-02 22:45:16,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:45:16,989 INFO L470 AbstractCegarLoop]: Abstraction has 7520 states and 11344 transitions. [2021-11-02 22:45:16,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:16,990 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 11344 transitions. [2021-11-02 22:45:16,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-02 22:45:16,991 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:16,991 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:45:16,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 22:45:16,992 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:45:16,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:16,993 INFO L85 PathProgramCache]: Analyzing trace with hash -938563623, now seen corresponding path program 1 times [2021-11-02 22:45:16,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:45:16,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007204547] [2021-11-02 22:45:16,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:16,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:45:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:45:17,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:45:17,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:45:17,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007204547] [2021-11-02 22:45:17,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007204547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:45:17,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:45:17,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:45:17,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695254757] [2021-11-02 22:45:17,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:45:17,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:45:17,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:45:17,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:45:17,150 INFO L87 Difference]: Start difference. First operand 7520 states and 11344 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:17,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:45:17,772 INFO L93 Difference]: Finished difference Result 12738 states and 19089 transitions. [2021-11-02 22:45:17,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:45:17,773 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-02 22:45:17,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:45:17,791 INFO L225 Difference]: With dead ends: 12738 [2021-11-02 22:45:17,792 INFO L226 Difference]: Without dead ends: 7520 [2021-11-02 22:45:17,800 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:45:17,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7520 states. [2021-11-02 22:45:18,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7520 to 7520. [2021-11-02 22:45:18,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7520 states, 7518 states have (on average 1.5003990422984836) internal successors, (11280), 7519 states have internal predecessors, (11280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:18,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 11280 transitions. [2021-11-02 22:45:18,318 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 11280 transitions. Word has length 80 [2021-11-02 22:45:18,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:45:18,318 INFO L470 AbstractCegarLoop]: Abstraction has 7520 states and 11280 transitions. [2021-11-02 22:45:18,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:18,319 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 11280 transitions. [2021-11-02 22:45:18,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-02 22:45:18,320 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:18,321 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:45:18,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 22:45:18,321 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:45:18,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:18,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1639628201, now seen corresponding path program 1 times [2021-11-02 22:45:18,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:45:18,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036826510] [2021-11-02 22:45:18,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:18,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:45:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:45:18,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:45:18,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:45:18,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036826510] [2021-11-02 22:45:18,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036826510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:45:18,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:45:18,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:45:18,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54585868] [2021-11-02 22:45:18,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:45:18,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:45:18,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:45:18,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:45:18,468 INFO L87 Difference]: Start difference. First operand 7520 states and 11280 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:19,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:45:19,463 INFO L93 Difference]: Finished difference Result 11426 states and 16923 transitions. [2021-11-02 22:45:19,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:45:19,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-02 22:45:19,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:45:19,487 INFO L225 Difference]: With dead ends: 11426 [2021-11-02 22:45:19,487 INFO L226 Difference]: Without dead ends: 11424 [2021-11-02 22:45:19,491 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-02 22:45:19,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11424 states. [2021-11-02 22:45:20,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11424 to 7712. [2021-11-02 22:45:20,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7712 states, 7710 states have (on average 1.48378728923476) internal successors, (11440), 7711 states have internal predecessors, (11440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:20,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7712 states to 7712 states and 11440 transitions. [2021-11-02 22:45:20,041 INFO L78 Accepts]: Start accepts. Automaton has 7712 states and 11440 transitions. Word has length 80 [2021-11-02 22:45:20,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:45:20,042 INFO L470 AbstractCegarLoop]: Abstraction has 7712 states and 11440 transitions. [2021-11-02 22:45:20,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:20,042 INFO L276 IsEmpty]: Start isEmpty. Operand 7712 states and 11440 transitions. [2021-11-02 22:45:20,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-02 22:45:20,043 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:20,044 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:45:20,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 22:45:20,044 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:45:20,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:20,045 INFO L85 PathProgramCache]: Analyzing trace with hash 492740282, now seen corresponding path program 1 times [2021-11-02 22:45:20,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:45:20,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102744657] [2021-11-02 22:45:20,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:20,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:45:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:45:20,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:45:20,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:45:20,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102744657] [2021-11-02 22:45:20,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102744657] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:45:20,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:45:20,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:45:20,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292321001] [2021-11-02 22:45:20,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:45:20,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:45:20,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:45:20,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:45:20,096 INFO L87 Difference]: Start difference. First operand 7712 states and 11440 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:20,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:45:20,869 INFO L93 Difference]: Finished difference Result 13223 states and 19510 transitions. [2021-11-02 22:45:20,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:45:20,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-02 22:45:20,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:45:20,894 INFO L225 Difference]: With dead ends: 13223 [2021-11-02 22:45:20,895 INFO L226 Difference]: Without dead ends: 10212 [2021-11-02 22:45:20,902 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:45:20,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10212 states. [2021-11-02 22:45:21,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10212 to 10210. [2021-11-02 22:45:21,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10210 states, 10208 states have (on average 1.468847962382445) internal successors, (14994), 10209 states have internal predecessors, (14994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:21,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10210 states to 10210 states and 14994 transitions. [2021-11-02 22:45:21,742 INFO L78 Accepts]: Start accepts. Automaton has 10210 states and 14994 transitions. Word has length 81 [2021-11-02 22:45:21,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:45:21,743 INFO L470 AbstractCegarLoop]: Abstraction has 10210 states and 14994 transitions. [2021-11-02 22:45:21,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:21,743 INFO L276 IsEmpty]: Start isEmpty. Operand 10210 states and 14994 transitions. [2021-11-02 22:45:21,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-02 22:45:21,751 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:21,751 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:45:21,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 22:45:21,752 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:45:21,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:21,752 INFO L85 PathProgramCache]: Analyzing trace with hash 651816077, now seen corresponding path program 1 times [2021-11-02 22:45:21,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:45:21,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404552983] [2021-11-02 22:45:21,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:21,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:45:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:45:21,912 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-02 22:45:21,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:45:21,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404552983] [2021-11-02 22:45:21,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404552983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:45:21,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:45:21,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:45:21,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360703059] [2021-11-02 22:45:21,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:45:21,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:45:21,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:45:21,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:45:21,915 INFO L87 Difference]: Start difference. First operand 10210 states and 14994 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:25,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:45:25,409 INFO L93 Difference]: Finished difference Result 59216 states and 85529 transitions. [2021-11-02 22:45:25,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:45:25,410 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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 111 [2021-11-02 22:45:25,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:45:25,554 INFO L225 Difference]: With dead ends: 59216 [2021-11-02 22:45:25,554 INFO L226 Difference]: Without dead ends: 51310 [2021-11-02 22:45:25,576 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:45:25,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51310 states. [2021-11-02 22:45:27,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51310 to 18114. [2021-11-02 22:45:27,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18114 states, 18112 states have (on average 1.451523851590106) internal successors, (26290), 18113 states have internal predecessors, (26290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:27,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18114 states to 18114 states and 26290 transitions. [2021-11-02 22:45:27,467 INFO L78 Accepts]: Start accepts. Automaton has 18114 states and 26290 transitions. Word has length 111 [2021-11-02 22:45:27,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:45:27,468 INFO L470 AbstractCegarLoop]: Abstraction has 18114 states and 26290 transitions. [2021-11-02 22:45:27,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:27,468 INFO L276 IsEmpty]: Start isEmpty. Operand 18114 states and 26290 transitions. [2021-11-02 22:45:27,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-02 22:45:27,476 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:27,477 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:45:27,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 22:45:27,477 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:45:27,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:27,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1116966739, now seen corresponding path program 1 times [2021-11-02 22:45:27,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:45:27,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745238319] [2021-11-02 22:45:27,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:27,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:45:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:45:27,831 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 22:45:27,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:45:27,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745238319] [2021-11-02 22:45:27,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745238319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:45:27,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:45:27,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:45:27,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408081135] [2021-11-02 22:45:27,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:45:27,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:45:27,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:45:27,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:45:27,838 INFO L87 Difference]: Start difference. First operand 18114 states and 26290 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:32,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:45:32,027 INFO L93 Difference]: Finished difference Result 67120 states and 96825 transitions. [2021-11-02 22:45:32,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:45:32,039 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-02 22:45:32,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:45:32,153 INFO L225 Difference]: With dead ends: 67120 [2021-11-02 22:45:32,153 INFO L226 Difference]: Without dead ends: 59214 [2021-11-02 22:45:32,176 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:45:32,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59214 states. [2021-11-02 22:45:35,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59214 to 29986. [2021-11-02 22:45:35,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29986 states, 29984 states have (on average 1.439234258271078) internal successors, (43154), 29985 states have internal predecessors, (43154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:35,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29986 states to 29986 states and 43154 transitions. [2021-11-02 22:45:35,124 INFO L78 Accepts]: Start accepts. Automaton has 29986 states and 43154 transitions. Word has length 111 [2021-11-02 22:45:35,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:45:35,125 INFO L470 AbstractCegarLoop]: Abstraction has 29986 states and 43154 transitions. [2021-11-02 22:45:35,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:35,126 INFO L276 IsEmpty]: Start isEmpty. Operand 29986 states and 43154 transitions. [2021-11-02 22:45:35,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-02 22:45:35,135 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:35,136 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:45:35,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 22:45:35,136 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:45:35,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:35,137 INFO L85 PathProgramCache]: Analyzing trace with hash 14673101, now seen corresponding path program 1 times [2021-11-02 22:45:35,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:45:35,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036431021] [2021-11-02 22:45:35,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:35,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:45:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:45:35,290 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 22:45:35,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:45:35,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036431021] [2021-11-02 22:45:35,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036431021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:45:35,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:45:35,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:45:35,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912441455] [2021-11-02 22:45:35,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:45:35,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:45:35,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:45:35,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:45:35,294 INFO L87 Difference]: Start difference. First operand 29986 states and 43154 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:40,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:45:40,483 INFO L93 Difference]: Finished difference Result 75024 states and 108121 transitions. [2021-11-02 22:45:40,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:45:40,484 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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 111 [2021-11-02 22:45:40,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:45:40,612 INFO L225 Difference]: With dead ends: 75024 [2021-11-02 22:45:40,613 INFO L226 Difference]: Without dead ends: 67118 [2021-11-02 22:45:40,640 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:45:40,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67118 states. [2021-11-02 22:45:44,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67118 to 37890. [2021-11-02 22:45:44,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37890 states, 37888 states have (on average 1.437130489864865) internal successors, (54450), 37889 states have internal predecessors, (54450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:44,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37890 states to 37890 states and 54450 transitions. [2021-11-02 22:45:44,224 INFO L78 Accepts]: Start accepts. Automaton has 37890 states and 54450 transitions. Word has length 111 [2021-11-02 22:45:44,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:45:44,225 INFO L470 AbstractCegarLoop]: Abstraction has 37890 states and 54450 transitions. [2021-11-02 22:45:44,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:44,225 INFO L276 IsEmpty]: Start isEmpty. Operand 37890 states and 54450 transitions. [2021-11-02 22:45:44,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-02 22:45:44,237 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:44,237 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:45:44,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 22:45:44,238 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:45:44,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:44,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1220785939, now seen corresponding path program 1 times [2021-11-02 22:45:44,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:45:44,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387979784] [2021-11-02 22:45:44,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:44,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:45:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:45:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-02 22:45:44,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:45:44,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387979784] [2021-11-02 22:45:44,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387979784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:45:44,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:45:44,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:45:44,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212730490] [2021-11-02 22:45:44,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:45:44,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:45:44,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:45:44,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:45:44,377 INFO L87 Difference]: Start difference. First operand 37890 states and 54450 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:50,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:45:50,880 INFO L93 Difference]: Finished difference Result 82928 states and 119417 transitions. [2021-11-02 22:45:50,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:45:50,884 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 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 111 [2021-11-02 22:45:50,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:45:51,031 INFO L225 Difference]: With dead ends: 82928 [2021-11-02 22:45:51,031 INFO L226 Difference]: Without dead ends: 75022 [2021-11-02 22:45:51,059 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:45:51,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75022 states. [2021-11-02 22:45:55,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75022 to 45794. [2021-11-02 22:45:55,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45794 states, 45792 states have (on average 1.4357529699510831) internal successors, (65746), 45793 states have internal predecessors, (65746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:55,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45794 states to 45794 states and 65746 transitions. [2021-11-02 22:45:55,435 INFO L78 Accepts]: Start accepts. Automaton has 45794 states and 65746 transitions. Word has length 111 [2021-11-02 22:45:55,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:45:55,435 INFO L470 AbstractCegarLoop]: Abstraction has 45794 states and 65746 transitions. [2021-11-02 22:45:55,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:55,436 INFO L276 IsEmpty]: Start isEmpty. Operand 45794 states and 65746 transitions. [2021-11-02 22:45:55,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-02 22:45:55,449 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:55,449 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:45:55,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 22:45:55,450 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:45:55,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:55,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1653185805, now seen corresponding path program 1 times [2021-11-02 22:45:55,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:45:55,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267521988] [2021-11-02 22:45:55,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:55,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:45:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:45:55,581 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:45:55,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:45:55,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267521988] [2021-11-02 22:45:55,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267521988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:45:55,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:45:55,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:45:55,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635495729] [2021-11-02 22:45:55,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:45:55,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:45:55,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:45:55,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:45:55,585 INFO L87 Difference]: Start difference. First operand 45794 states and 65746 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:46:03,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:03,464 INFO L93 Difference]: Finished difference Result 90832 states and 130713 transitions. [2021-11-02 22:46:03,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:46:03,465 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 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 111 [2021-11-02 22:46:03,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:03,582 INFO L225 Difference]: With dead ends: 90832 [2021-11-02 22:46:03,583 INFO L226 Difference]: Without dead ends: 82926 [2021-11-02 22:46:03,602 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:46:03,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82926 states. [2021-11-02 22:46:09,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82926 to 53698. [2021-11-02 22:46:09,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53698 states, 53696 states have (on average 1.434780989272944) internal successors, (77042), 53697 states have internal predecessors, (77042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:46:09,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53698 states to 53698 states and 77042 transitions. [2021-11-02 22:46:09,331 INFO L78 Accepts]: Start accepts. Automaton has 53698 states and 77042 transitions. Word has length 111 [2021-11-02 22:46:09,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:09,331 INFO L470 AbstractCegarLoop]: Abstraction has 53698 states and 77042 transitions. [2021-11-02 22:46:09,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:46:09,332 INFO L276 IsEmpty]: Start isEmpty. Operand 53698 states and 77042 transitions. [2021-11-02 22:46:09,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-02 22:46:09,350 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:09,350 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:09,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 22:46:09,351 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:46:09,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:09,351 INFO L85 PathProgramCache]: Analyzing trace with hash -2019174363, now seen corresponding path program 1 times [2021-11-02 22:46:09,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:09,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657661378] [2021-11-02 22:46:09,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:09,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:09,421 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:09,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:09,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657661378] [2021-11-02 22:46:09,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657661378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:09,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:09,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:46:09,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027577641] [2021-11-02 22:46:09,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:46:09,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:09,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:46:09,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:46:09,424 INFO L87 Difference]: Start difference. First operand 53698 states and 77042 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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)