./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.6_overflow.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_18007f26-3736-4b51-9b67-caf1bfca158c/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18007f26-3736-4b51-9b67-caf1bfca158c/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_18007f26-3736-4b51-9b67-caf1bfca158c/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18007f26-3736-4b51-9b67-caf1bfca158c/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18007f26-3736-4b51-9b67-caf1bfca158c/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_18007f26-3736-4b51-9b67-caf1bfca158c/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 f849c1e6ce7ffa48adc984c6b88a4bbd141e216b6aba263b63b10145d18bda70 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:36:09,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:36:09,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:36:09,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:36:09,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:36:09,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:36:09,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:36:09,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:36:09,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:36:09,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:36:09,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:36:09,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:36:09,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:36:09,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:36:09,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:36:09,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:36:09,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:36:09,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:36:09,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:36:09,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:36:09,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:36:09,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:36:09,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:36:09,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:36:09,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:36:09,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:36:09,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:36:09,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:36:09,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:36:09,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:36:09,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:36:09,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:36:09,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:36:09,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:36:09,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:36:09,698 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:36:09,699 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:36:09,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:36:09,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:36:09,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:36:09,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:36:09,702 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18007f26-3736-4b51-9b67-caf1bfca158c/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:36:09,729 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:36:09,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:36:09,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:36:09,731 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:36:09,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:36:09,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:36:09,732 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:36:09,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:36:09,733 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:36:09,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:36:09,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:36:09,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:36:09,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:36:09,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:36:09,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:36:09,735 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:36:09,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:36:09,735 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:36:09,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:36:09,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:36:09,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:36:09,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:36:09,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:36:09,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:36:09,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:36:09,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:36:09,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:36:09,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:36:09,738 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:36:09,738 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:36:09,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:36:09,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:36:09,739 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_18007f26-3736-4b51-9b67-caf1bfca158c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18007f26-3736-4b51-9b67-caf1bfca158c/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f849c1e6ce7ffa48adc984c6b88a4bbd141e216b6aba263b63b10145d18bda70 [2021-11-02 22:36:09,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:36:10,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:36:10,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:36:10,018 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:36:10,019 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:36:10,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18007f26-3736-4b51-9b67-caf1bfca158c/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/combinations/pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2021-11-02 22:36:10,084 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18007f26-3736-4b51-9b67-caf1bfca158c/bin/uautomizer-tBqnrhUYjU/data/43c42b2f7/8f7fed6c841842ec88792a76e40a481d/FLAGc14406c54 [2021-11-02 22:36:10,986 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:36:10,987 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18007f26-3736-4b51-9b67-caf1bfca158c/sv-benchmarks/c/combinations/pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2021-11-02 22:36:11,032 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18007f26-3736-4b51-9b67-caf1bfca158c/bin/uautomizer-tBqnrhUYjU/data/43c42b2f7/8f7fed6c841842ec88792a76e40a481d/FLAGc14406c54 [2021-11-02 22:36:11,479 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18007f26-3736-4b51-9b67-caf1bfca158c/bin/uautomizer-tBqnrhUYjU/data/43c42b2f7/8f7fed6c841842ec88792a76e40a481d [2021-11-02 22:36:11,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:36:11,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:36:11,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:36:11,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:36:11,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:36:11,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:36:11" (1/1) ... [2021-11-02 22:36:11,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d7766e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:11, skipping insertion in model container [2021-11-02 22:36:11,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:36:11" (1/1) ... [2021-11-02 22:36:11,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:36:11,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:36:12,252 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_18007f26-3736-4b51-9b67-caf1bfca158c/sv-benchmarks/c/combinations/pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[15688,15701] [2021-11-02 22:36:12,345 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_18007f26-3736-4b51-9b67-caf1bfca158c/sv-benchmarks/c/combinations/pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[23193,23206] [2021-11-02 22:36:13,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:36:13,224 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:36:13,299 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_18007f26-3736-4b51-9b67-caf1bfca158c/sv-benchmarks/c/combinations/pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[15688,15701] [2021-11-02 22:36:13,320 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_18007f26-3736-4b51-9b67-caf1bfca158c/sv-benchmarks/c/combinations/pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[23193,23206] [2021-11-02 22:36:13,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:36:13,975 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:36:13,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:13 WrapperNode [2021-11-02 22:36:13,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:36:13,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:36:13,980 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:36:13,980 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:36:13,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:13" (1/1) ... [2021-11-02 22:36:14,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:13" (1/1) ... [2021-11-02 22:36:14,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:36:14,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:36:14,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:36:14,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:36:14,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:13" (1/1) ... [2021-11-02 22:36:14,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:13" (1/1) ... [2021-11-02 22:36:14,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:13" (1/1) ... [2021-11-02 22:36:14,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:13" (1/1) ... [2021-11-02 22:36:14,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:13" (1/1) ... [2021-11-02 22:36:14,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:13" (1/1) ... [2021-11-02 22:36:14,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:13" (1/1) ... [2021-11-02 22:36:14,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:36:14,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:36:14,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:36:14,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:36:14,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:13" (1/1) ... [2021-11-02 22:36:14,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:36:14,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18007f26-3736-4b51-9b67-caf1bfca158c/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:36:15,008 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18007f26-3736-4b51-9b67-caf1bfca158c/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:36:15,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18007f26-3736-4b51-9b67-caf1bfca158c/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:36:15,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:36:15,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:36:15,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:36:15,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:36:20,051 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:36:20,052 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2021-11-02 22:36:20,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:36:20 BoogieIcfgContainer [2021-11-02 22:36:20,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:36:20,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:36:20,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:36:20,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:36:20,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:36:11" (1/3) ... [2021-11-02 22:36:20,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375dc377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:36:20, skipping insertion in model container [2021-11-02 22:36:20,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:13" (2/3) ... [2021-11-02 22:36:20,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375dc377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:36:20, skipping insertion in model container [2021-11-02 22:36:20,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:36:20" (3/3) ... [2021-11-02 22:36:20,069 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2021-11-02 22:36:20,079 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:36:20,079 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-02 22:36:20,150 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:36:20,159 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 22:36:20,159 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-02 22:36:20,203 INFO L276 IsEmpty]: Start isEmpty. Operand has 925 states, 922 states have (on average 1.9002169197396963) internal successors, (1752), 924 states have internal predecessors, (1752), 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 22:36:20,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 22:36:20,213 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:20,214 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 22:36:20,214 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:20,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:20,220 INFO L85 PathProgramCache]: Analyzing trace with hash 340623278, now seen corresponding path program 1 times [2021-11-02 22:36:20,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:20,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728555513] [2021-11-02 22:36:20,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:20,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:20,510 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 22:36:20,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:20,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728555513] [2021-11-02 22:36:20,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728555513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:20,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:20,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:36:20,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457125474] [2021-11-02 22:36:20,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:36:20,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:20,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:36:20,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:36:20,541 INFO L87 Difference]: Start difference. First operand has 925 states, 922 states have (on average 1.9002169197396963) internal successors, (1752), 924 states have internal predecessors, (1752), 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 22:36:20,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:20,641 INFO L93 Difference]: Finished difference Result 1802 states and 3414 transitions. [2021-11-02 22:36:20,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:36:20,643 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 22:36:20,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:20,664 INFO L225 Difference]: With dead ends: 1802 [2021-11-02 22:36:20,664 INFO L226 Difference]: Without dead ends: 859 [2021-11-02 22:36:20,672 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 22:36:20,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2021-11-02 22:36:20,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 859. [2021-11-02 22:36:20,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 857 states have (on average 1.8891481913652275) internal successors, (1619), 858 states have internal predecessors, (1619), 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 22:36:20,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1619 transitions. [2021-11-02 22:36:20,811 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1619 transitions. Word has length 38 [2021-11-02 22:36:20,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:20,811 INFO L470 AbstractCegarLoop]: Abstraction has 859 states and 1619 transitions. [2021-11-02 22:36:20,812 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 22:36:20,812 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1619 transitions. [2021-11-02 22:36:20,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 22:36:20,820 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:20,821 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 22:36:20,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:36:20,821 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:20,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:20,826 INFO L85 PathProgramCache]: Analyzing trace with hash 615382892, now seen corresponding path program 1 times [2021-11-02 22:36:20,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:20,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736116591] [2021-11-02 22:36:20,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:20,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:20,967 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 22:36:20,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:20,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736116591] [2021-11-02 22:36:20,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736116591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:20,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:20,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:36:20,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910945395] [2021-11-02 22:36:20,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:36:20,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:20,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:36:20,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:36:20,971 INFO L87 Difference]: Start difference. First operand 859 states and 1619 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 22:36:21,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:21,074 INFO L93 Difference]: Finished difference Result 922 states and 1717 transitions. [2021-11-02 22:36:21,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:36:21,075 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 22:36:21,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:21,081 INFO L225 Difference]: With dead ends: 922 [2021-11-02 22:36:21,081 INFO L226 Difference]: Without dead ends: 859 [2021-11-02 22:36:21,083 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 22:36:21,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2021-11-02 22:36:21,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 859. [2021-11-02 22:36:21,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 857 states have (on average 1.8424737456242708) internal successors, (1579), 858 states have internal predecessors, (1579), 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 22:36:21,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1579 transitions. [2021-11-02 22:36:21,109 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1579 transitions. Word has length 38 [2021-11-02 22:36:21,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:21,110 INFO L470 AbstractCegarLoop]: Abstraction has 859 states and 1579 transitions. [2021-11-02 22:36:21,110 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 22:36:21,110 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1579 transitions. [2021-11-02 22:36:21,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 22:36:21,113 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:21,113 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 22:36:21,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:36:21,114 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:21,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:21,114 INFO L85 PathProgramCache]: Analyzing trace with hash 871971539, now seen corresponding path program 1 times [2021-11-02 22:36:21,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:21,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157915739] [2021-11-02 22:36:21,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:21,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:21,287 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 22:36:21,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:21,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157915739] [2021-11-02 22:36:21,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157915739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:21,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:21,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:36:21,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577331941] [2021-11-02 22:36:21,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:36:21,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:21,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:36:21,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:36:21,304 INFO L87 Difference]: Start difference. First operand 859 states and 1579 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 22:36:28,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:28,975 INFO L93 Difference]: Finished difference Result 3114 states and 5888 transitions. [2021-11-02 22:36:28,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:36:28,981 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 22:36:28,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:28,997 INFO L225 Difference]: With dead ends: 3114 [2021-11-02 22:36:28,997 INFO L226 Difference]: Without dead ends: 2361 [2021-11-02 22:36:29,000 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 22:36:29,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2361 states. [2021-11-02 22:36:29,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2361 to 2361. [2021-11-02 22:36:29,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2361 states, 2359 states have (on average 1.5654938533276812) internal successors, (3693), 2360 states have internal predecessors, (3693), 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 22:36:29,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2361 states to 2361 states and 3693 transitions. [2021-11-02 22:36:29,078 INFO L78 Accepts]: Start accepts. Automaton has 2361 states and 3693 transitions. Word has length 67 [2021-11-02 22:36:29,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:29,079 INFO L470 AbstractCegarLoop]: Abstraction has 2361 states and 3693 transitions. [2021-11-02 22:36:29,080 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 22:36:29,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2361 states and 3693 transitions. [2021-11-02 22:36:29,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 22:36:29,082 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:29,083 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 22:36:29,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:36:29,083 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:29,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:29,084 INFO L85 PathProgramCache]: Analyzing trace with hash -2101054792, now seen corresponding path program 1 times [2021-11-02 22:36:29,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:29,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398363342] [2021-11-02 22:36:29,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:29,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:29,171 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 22:36:29,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:29,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398363342] [2021-11-02 22:36:29,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398363342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:29,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:29,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:36:29,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327919773] [2021-11-02 22:36:29,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:36:29,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:29,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:36:29,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:36:29,175 INFO L87 Difference]: Start difference. First operand 2361 states and 3693 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 22:36:29,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:29,216 INFO L93 Difference]: Finished difference Result 2473 states and 3871 transitions. [2021-11-02 22:36:29,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:36:29,217 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 22:36:29,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:29,231 INFO L225 Difference]: With dead ends: 2473 [2021-11-02 22:36:29,232 INFO L226 Difference]: Without dead ends: 2414 [2021-11-02 22:36:29,233 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 22:36:29,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2021-11-02 22:36:29,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 2412. [2021-11-02 22:36:29,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2410 states have (on average 1.566390041493776) internal successors, (3775), 2411 states have internal predecessors, (3775), 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 22:36:29,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3775 transitions. [2021-11-02 22:36:29,303 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3775 transitions. Word has length 77 [2021-11-02 22:36:29,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:29,304 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 3775 transitions. [2021-11-02 22:36:29,304 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 22:36:29,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3775 transitions. [2021-11-02 22:36:29,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 22:36:29,305 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:29,306 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 22:36:29,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:36:29,306 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:29,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:29,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1452480302, now seen corresponding path program 1 times [2021-11-02 22:36:29,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:29,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936710398] [2021-11-02 22:36:29,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:29,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:29,408 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 22:36:29,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:29,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936710398] [2021-11-02 22:36:29,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936710398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:29,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:29,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:36:29,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657715267] [2021-11-02 22:36:29,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:36:29,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:29,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:36:29,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:36:29,412 INFO L87 Difference]: Start difference. First operand 2412 states and 3775 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 22:36:29,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:29,458 INFO L93 Difference]: Finished difference Result 2620 states and 4107 transitions. [2021-11-02 22:36:29,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:36:29,459 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 22:36:29,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:29,474 INFO L225 Difference]: With dead ends: 2620 [2021-11-02 22:36:29,475 INFO L226 Difference]: Without dead ends: 2510 [2021-11-02 22:36:29,476 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 22:36:29,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2510 states. [2021-11-02 22:36:29,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2510 to 2508. [2021-11-02 22:36:29,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2508 states, 2506 states have (on average 1.567438148443735) internal successors, (3928), 2507 states have internal predecessors, (3928), 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 22:36:29,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2508 states to 2508 states and 3928 transitions. [2021-11-02 22:36:29,584 INFO L78 Accepts]: Start accepts. Automaton has 2508 states and 3928 transitions. Word has length 77 [2021-11-02 22:36:29,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:29,585 INFO L470 AbstractCegarLoop]: Abstraction has 2508 states and 3928 transitions. [2021-11-02 22:36:29,585 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 22:36:29,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2508 states and 3928 transitions. [2021-11-02 22:36:29,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 22:36:29,586 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:29,586 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 22:36:29,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:36:29,587 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:29,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:29,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1624501596, now seen corresponding path program 1 times [2021-11-02 22:36:29,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:29,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270372736] [2021-11-02 22:36:29,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:29,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:29,689 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 22:36:29,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:29,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270372736] [2021-11-02 22:36:29,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270372736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:29,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:29,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:36:29,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458839396] [2021-11-02 22:36:29,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:36:29,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:29,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:36:29,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:36:29,692 INFO L87 Difference]: Start difference. First operand 2508 states and 3928 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 22:36:30,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:30,072 INFO L93 Difference]: Finished difference Result 4980 states and 7876 transitions. [2021-11-02 22:36:30,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 22:36:30,076 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 22:36:30,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:30,105 INFO L225 Difference]: With dead ends: 4980 [2021-11-02 22:36:30,105 INFO L226 Difference]: Without dead ends: 4774 [2021-11-02 22:36:30,108 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 22:36:30,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4774 states. [2021-11-02 22:36:30,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4774 to 2712. [2021-11-02 22:36:30,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2712 states, 2710 states have (on average 1.5675276752767529) internal successors, (4248), 2711 states have internal predecessors, (4248), 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 22:36:30,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2712 states to 2712 states and 4248 transitions. [2021-11-02 22:36:30,217 INFO L78 Accepts]: Start accepts. Automaton has 2712 states and 4248 transitions. Word has length 77 [2021-11-02 22:36:30,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:30,218 INFO L470 AbstractCegarLoop]: Abstraction has 2712 states and 4248 transitions. [2021-11-02 22:36:30,218 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 22:36:30,218 INFO L276 IsEmpty]: Start isEmpty. Operand 2712 states and 4248 transitions. [2021-11-02 22:36:30,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 22:36:30,219 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:30,219 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 22:36:30,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:36:30,220 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:30,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:30,220 INFO L85 PathProgramCache]: Analyzing trace with hash 806369108, now seen corresponding path program 1 times [2021-11-02 22:36:30,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:30,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223572728] [2021-11-02 22:36:30,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:30,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:30,283 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 22:36:30,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:30,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223572728] [2021-11-02 22:36:30,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223572728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:30,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:30,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:36:30,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005575440] [2021-11-02 22:36:30,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:36:30,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:30,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:36:30,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:36:30,286 INFO L87 Difference]: Start difference. First operand 2712 states and 4248 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 22:36:30,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:30,365 INFO L93 Difference]: Finished difference Result 3320 states and 5208 transitions. [2021-11-02 22:36:30,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:36:30,365 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 22:36:30,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:30,381 INFO L225 Difference]: With dead ends: 3320 [2021-11-02 22:36:30,381 INFO L226 Difference]: Without dead ends: 2910 [2021-11-02 22:36:30,383 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 22:36:30,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2021-11-02 22:36:30,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2908. [2021-11-02 22:36:30,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2908 states, 2906 states have (on average 1.5664143152099106) internal successors, (4552), 2907 states have internal predecessors, (4552), 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 22:36:30,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2908 states to 2908 states and 4552 transitions. [2021-11-02 22:36:30,487 INFO L78 Accepts]: Start accepts. Automaton has 2908 states and 4552 transitions. Word has length 79 [2021-11-02 22:36:30,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:30,488 INFO L470 AbstractCegarLoop]: Abstraction has 2908 states and 4552 transitions. [2021-11-02 22:36:30,488 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 22:36:30,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2908 states and 4552 transitions. [2021-11-02 22:36:30,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 22:36:30,492 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:30,492 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 22:36:30,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:36:30,492 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:30,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:30,494 INFO L85 PathProgramCache]: Analyzing trace with hash 872862620, now seen corresponding path program 1 times [2021-11-02 22:36:30,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:30,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122233572] [2021-11-02 22:36:30,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:30,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:30,813 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 22:36:30,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:30,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122233572] [2021-11-02 22:36:30,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122233572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:30,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:30,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:36:30,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589621299] [2021-11-02 22:36:30,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:36:30,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:30,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:36:30,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:36:30,816 INFO L87 Difference]: Start difference. First operand 2908 states and 4552 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 22:36:31,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:31,129 INFO L93 Difference]: Finished difference Result 3514 states and 5504 transitions. [2021-11-02 22:36:31,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:36:31,130 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 22:36:31,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:31,146 INFO L225 Difference]: With dead ends: 3514 [2021-11-02 22:36:31,146 INFO L226 Difference]: Without dead ends: 2910 [2021-11-02 22:36:31,148 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 22:36:31,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2021-11-02 22:36:31,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2908. [2021-11-02 22:36:31,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2908 states, 2906 states have (on average 1.5643496214728148) internal successors, (4546), 2907 states have internal predecessors, (4546), 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 22:36:31,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2908 states to 2908 states and 4546 transitions. [2021-11-02 22:36:31,245 INFO L78 Accepts]: Start accepts. Automaton has 2908 states and 4546 transitions. Word has length 79 [2021-11-02 22:36:31,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:31,245 INFO L470 AbstractCegarLoop]: Abstraction has 2908 states and 4546 transitions. [2021-11-02 22:36:31,246 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 22:36:31,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2908 states and 4546 transitions. [2021-11-02 22:36:31,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 22:36:31,247 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:31,247 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 22:36:31,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 22:36:31,248 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:31,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:31,248 INFO L85 PathProgramCache]: Analyzing trace with hash -385682984, now seen corresponding path program 1 times [2021-11-02 22:36:31,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:31,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303487602] [2021-11-02 22:36:31,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:31,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:31,297 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 22:36:31,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:31,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303487602] [2021-11-02 22:36:31,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303487602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:31,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:31,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:36:31,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189116154] [2021-11-02 22:36:31,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:36:31,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:31,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:36:31,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:36:31,300 INFO L87 Difference]: Start difference. First operand 2908 states and 4546 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 22:36:31,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:31,399 INFO L93 Difference]: Finished difference Result 4044 states and 6316 transitions. [2021-11-02 22:36:31,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:36:31,400 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 22:36:31,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:31,417 INFO L225 Difference]: With dead ends: 4044 [2021-11-02 22:36:31,418 INFO L226 Difference]: Without dead ends: 3440 [2021-11-02 22:36:31,420 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 22:36:31,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3440 states. [2021-11-02 22:36:31,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3440 to 3438. [2021-11-02 22:36:31,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3438 states, 3436 states have (on average 1.559371362048894) internal successors, (5358), 3437 states have internal predecessors, (5358), 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 22:36:31,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3438 states to 3438 states and 5358 transitions. [2021-11-02 22:36:31,601 INFO L78 Accepts]: Start accepts. Automaton has 3438 states and 5358 transitions. Word has length 79 [2021-11-02 22:36:31,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:31,601 INFO L470 AbstractCegarLoop]: Abstraction has 3438 states and 5358 transitions. [2021-11-02 22:36:31,601 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 22:36:31,602 INFO L276 IsEmpty]: Start isEmpty. Operand 3438 states and 5358 transitions. [2021-11-02 22:36:31,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 22:36:31,603 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:31,603 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 22:36:31,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 22:36:31,603 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:31,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:31,604 INFO L85 PathProgramCache]: Analyzing trace with hash -111995272, now seen corresponding path program 1 times [2021-11-02 22:36:31,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:31,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219647843] [2021-11-02 22:36:31,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:31,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:31,649 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 22:36:31,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:31,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219647843] [2021-11-02 22:36:31,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219647843] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:31,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:31,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:36:31,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113361827] [2021-11-02 22:36:31,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:36:31,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:31,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:36:31,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:36:31,652 INFO L87 Difference]: Start difference. First operand 3438 states and 5358 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 22:36:31,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:31,821 INFO L93 Difference]: Finished difference Result 5562 states and 8632 transitions. [2021-11-02 22:36:31,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:36:31,821 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 22:36:31,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:31,838 INFO L225 Difference]: With dead ends: 5562 [2021-11-02 22:36:31,838 INFO L226 Difference]: Without dead ends: 4428 [2021-11-02 22:36:31,842 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 22:36:31,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4428 states. [2021-11-02 22:36:32,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4428 to 4426. [2021-11-02 22:36:32,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4426 states, 4424 states have (on average 1.548372513562387) internal successors, (6850), 4425 states have internal predecessors, (6850), 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 22:36:32,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4426 states to 4426 states and 6850 transitions. [2021-11-02 22:36:32,057 INFO L78 Accepts]: Start accepts. Automaton has 4426 states and 6850 transitions. Word has length 79 [2021-11-02 22:36:32,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:32,058 INFO L470 AbstractCegarLoop]: Abstraction has 4426 states and 6850 transitions. [2021-11-02 22:36:32,058 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 22:36:32,058 INFO L276 IsEmpty]: Start isEmpty. Operand 4426 states and 6850 transitions. [2021-11-02 22:36:32,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 22:36:32,059 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:32,059 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 22:36:32,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 22:36:32,060 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:32,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:32,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1707076376, now seen corresponding path program 1 times [2021-11-02 22:36:32,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:32,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741406507] [2021-11-02 22:36:32,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:32,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:32,104 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 22:36:32,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:32,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741406507] [2021-11-02 22:36:32,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741406507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:32,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:32,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:36:32,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688958666] [2021-11-02 22:36:32,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:36:32,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:32,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:36:32,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:36:32,107 INFO L87 Difference]: Start difference. First operand 4426 states and 6850 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 22:36:32,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:32,384 INFO L93 Difference]: Finished difference Result 8382 states and 12868 transitions. [2021-11-02 22:36:32,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:36:32,385 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 22:36:32,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:32,400 INFO L225 Difference]: With dead ends: 8382 [2021-11-02 22:36:32,400 INFO L226 Difference]: Without dead ends: 6260 [2021-11-02 22:36:32,405 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 22:36:32,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6260 states. [2021-11-02 22:36:32,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6260 to 6258. [2021-11-02 22:36:32,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6258 states, 6256 states have (on average 1.5297314578005115) internal successors, (9570), 6257 states have internal predecessors, (9570), 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 22:36:32,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6258 states to 6258 states and 9570 transitions. [2021-11-02 22:36:32,812 INFO L78 Accepts]: Start accepts. Automaton has 6258 states and 9570 transitions. Word has length 79 [2021-11-02 22:36:32,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:32,813 INFO L470 AbstractCegarLoop]: Abstraction has 6258 states and 9570 transitions. [2021-11-02 22:36:32,813 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 22:36:32,813 INFO L276 IsEmpty]: Start isEmpty. Operand 6258 states and 9570 transitions. [2021-11-02 22:36:32,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 22:36:32,814 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:32,815 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 22:36:32,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 22:36:32,815 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:32,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:32,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1886482360, now seen corresponding path program 1 times [2021-11-02 22:36:32,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:32,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492983740] [2021-11-02 22:36:32,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:32,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:32,864 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 22:36:32,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:32,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492983740] [2021-11-02 22:36:32,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492983740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:32,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:32,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:36:32,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002213914] [2021-11-02 22:36:32,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:36:32,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:32,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:36:32,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:36:32,867 INFO L87 Difference]: Start difference. First operand 6258 states and 9570 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 22:36:33,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:33,403 INFO L93 Difference]: Finished difference Result 13590 states and 20548 transitions. [2021-11-02 22:36:33,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:36:33,403 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 22:36:33,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:33,425 INFO L225 Difference]: With dead ends: 13590 [2021-11-02 22:36:33,425 INFO L226 Difference]: Without dead ends: 9636 [2021-11-02 22:36:33,433 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 22:36:33,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9636 states. [2021-11-02 22:36:34,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9636 to 9634. [2021-11-02 22:36:34,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9634 states, 9632 states have (on average 1.503529900332226) internal successors, (14482), 9633 states have internal predecessors, (14482), 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 22:36:34,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9634 states to 9634 states and 14482 transitions. [2021-11-02 22:36:34,088 INFO L78 Accepts]: Start accepts. Automaton has 9634 states and 14482 transitions. Word has length 79 [2021-11-02 22:36:34,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:34,089 INFO L470 AbstractCegarLoop]: Abstraction has 9634 states and 14482 transitions. [2021-11-02 22:36:34,090 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 22:36:34,090 INFO L276 IsEmpty]: Start isEmpty. Operand 9634 states and 14482 transitions. [2021-11-02 22:36:34,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-02 22:36:34,091 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:34,091 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 22:36:34,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 22:36:34,092 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:34,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:34,093 INFO L85 PathProgramCache]: Analyzing trace with hash 874214487, now seen corresponding path program 1 times [2021-11-02 22:36:34,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:34,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911012217] [2021-11-02 22:36:34,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:34,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:34,219 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 22:36:34,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:34,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911012217] [2021-11-02 22:36:34,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911012217] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:34,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:34,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:36:34,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559404490] [2021-11-02 22:36:34,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:36:34,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:34,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:36:34,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:36:34,222 INFO L87 Difference]: Start difference. First operand 9634 states and 14482 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 22:36:35,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:35,445 INFO L93 Difference]: Finished difference Result 15969 states and 23625 transitions. [2021-11-02 22:36:35,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:36:35,446 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 22:36:35,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:35,494 INFO L225 Difference]: With dead ends: 15969 [2021-11-02 22:36:35,494 INFO L226 Difference]: Without dead ends: 15967 [2021-11-02 22:36:35,500 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-02 22:36:35,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15967 states. [2021-11-02 22:36:36,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15967 to 10018. [2021-11-02 22:36:36,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10018 states, 10016 states have (on average 1.4810303514376997) internal successors, (14834), 10017 states have internal predecessors, (14834), 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 22:36:36,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10018 states to 10018 states and 14834 transitions. [2021-11-02 22:36:36,345 INFO L78 Accepts]: Start accepts. Automaton has 10018 states and 14834 transitions. Word has length 80 [2021-11-02 22:36:36,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:36,345 INFO L470 AbstractCegarLoop]: Abstraction has 10018 states and 14834 transitions. [2021-11-02 22:36:36,345 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 22:36:36,346 INFO L276 IsEmpty]: Start isEmpty. Operand 10018 states and 14834 transitions. [2021-11-02 22:36:36,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-02 22:36:36,381 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:36,381 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:36:36,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 22:36:36,382 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:36,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:36,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1535674975, now seen corresponding path program 1 times [2021-11-02 22:36:36,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:36,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620267755] [2021-11-02 22:36:36,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:36,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:36,526 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-02 22:36:36,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:36,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620267755] [2021-11-02 22:36:36,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620267755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:36,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:36,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:36:36,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426702704] [2021-11-02 22:36:36,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:36:36,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:36,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:36:36,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:36:36,530 INFO L87 Difference]: Start difference. First operand 10018 states and 14834 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 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 22:36:39,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:39,950 INFO L93 Difference]: Finished difference Result 57840 states and 84361 transitions. [2021-11-02 22:36:39,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:36:39,951 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 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 22:36:39,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:40,083 INFO L225 Difference]: With dead ends: 57840 [2021-11-02 22:36:40,084 INFO L226 Difference]: Without dead ends: 50126 [2021-11-02 22:36:40,109 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 22:36:40,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50126 states. [2021-11-02 22:36:41,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50126 to 17730. [2021-11-02 22:36:41,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17730 states, 17728 states have (on average 1.4649142599277978) internal successors, (25970), 17729 states have internal predecessors, (25970), 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 22:36:41,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17730 states to 17730 states and 25970 transitions. [2021-11-02 22:36:41,761 INFO L78 Accepts]: Start accepts. Automaton has 17730 states and 25970 transitions. Word has length 111 [2021-11-02 22:36:41,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:41,762 INFO L470 AbstractCegarLoop]: Abstraction has 17730 states and 25970 transitions. [2021-11-02 22:36:41,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 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 22:36:41,762 INFO L276 IsEmpty]: Start isEmpty. Operand 17730 states and 25970 transitions. [2021-11-02 22:36:41,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-02 22:36:41,770 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:41,771 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:36:41,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 22:36:41,771 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:41,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:41,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1506152757, now seen corresponding path program 1 times [2021-11-02 22:36:41,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:41,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92659799] [2021-11-02 22:36:41,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:41,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:41,881 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-02 22:36:41,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:41,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92659799] [2021-11-02 22:36:41,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92659799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:41,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:41,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:36:41,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555304367] [2021-11-02 22:36:41,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:36:41,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:41,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:36:41,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:36:41,884 INFO L87 Difference]: Start difference. First operand 17730 states and 25970 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 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 22:36:45,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:45,005 INFO L93 Difference]: Finished difference Result 65552 states and 95497 transitions. [2021-11-02 22:36:45,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:36:45,019 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 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 22:36:45,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:45,115 INFO L225 Difference]: With dead ends: 65552 [2021-11-02 22:36:45,115 INFO L226 Difference]: Without dead ends: 57838 [2021-11-02 22:36:45,134 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 22:36:45,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57838 states. [2021-11-02 22:36:47,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57838 to 29314. [2021-11-02 22:36:47,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29314 states, 29312 states have (on average 1.453125) internal successors, (42594), 29313 states have internal predecessors, (42594), 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 22:36:47,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29314 states to 29314 states and 42594 transitions. [2021-11-02 22:36:47,700 INFO L78 Accepts]: Start accepts. Automaton has 29314 states and 42594 transitions. Word has length 111 [2021-11-02 22:36:47,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:47,703 INFO L470 AbstractCegarLoop]: Abstraction has 29314 states and 42594 transitions. [2021-11-02 22:36:47,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 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 22:36:47,703 INFO L276 IsEmpty]: Start isEmpty. Operand 29314 states and 42594 transitions. [2021-11-02 22:36:47,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-02 22:36:47,716 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:47,716 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:36:47,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 22:36:47,717 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:47,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:47,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1232465045, now seen corresponding path program 1 times [2021-11-02 22:36:47,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:47,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591228201] [2021-11-02 22:36:47,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:47,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:47,857 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 22:36:47,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:47,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591228201] [2021-11-02 22:36:47,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591228201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:47,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:47,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:36:47,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907070629] [2021-11-02 22:36:47,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:36:47,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:47,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:36:47,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:36:47,862 INFO L87 Difference]: Start difference. First operand 29314 states and 42594 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 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 22:36:51,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:51,683 INFO L93 Difference]: Finished difference Result 73264 states and 106633 transitions. [2021-11-02 22:36:51,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:36:51,693 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 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 22:36:51,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:51,783 INFO L225 Difference]: With dead ends: 73264 [2021-11-02 22:36:51,783 INFO L226 Difference]: Without dead ends: 65550 [2021-11-02 22:36:51,805 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 22:36:51,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65550 states. [2021-11-02 22:36:54,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65550 to 37026. [2021-11-02 22:36:54,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37026 states, 37024 states have (on average 1.4512208297320657) internal successors, (53730), 37025 states have internal predecessors, (53730), 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 22:36:54,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37026 states to 37026 states and 53730 transitions. [2021-11-02 22:36:54,660 INFO L78 Accepts]: Start accepts. Automaton has 37026 states and 53730 transitions. Word has length 111 [2021-11-02 22:36:54,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:54,661 INFO L470 AbstractCegarLoop]: Abstraction has 37026 states and 53730 transitions. [2021-11-02 22:36:54,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 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 22:36:54,661 INFO L276 IsEmpty]: Start isEmpty. Operand 37026 states and 53730 transitions. [2021-11-02 22:36:54,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-02 22:36:54,675 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:54,676 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:36:54,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 22:36:54,676 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:54,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:54,677 INFO L85 PathProgramCache]: Analyzing trace with hash 586606603, now seen corresponding path program 1 times [2021-11-02 22:36:54,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:54,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888179106] [2021-11-02 22:36:54,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:54,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:54,806 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-02 22:36:54,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:54,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888179106] [2021-11-02 22:36:54,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888179106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:54,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:54,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:36:54,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648462876] [2021-11-02 22:36:54,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:36:54,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:54,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:36:54,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:36:54,810 INFO L87 Difference]: Start difference. First operand 37026 states and 53730 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 22:36:59,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:59,872 INFO L93 Difference]: Finished difference Result 80976 states and 117769 transitions. [2021-11-02 22:36:59,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:36:59,873 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 22:36:59,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:59,962 INFO L225 Difference]: With dead ends: 80976 [2021-11-02 22:36:59,962 INFO L226 Difference]: Without dead ends: 73262 [2021-11-02 22:36:59,985 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 22:37:00,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73262 states. [2021-11-02 22:37:03,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73262 to 44738. [2021-11-02 22:37:03,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44738 states, 44736 states have (on average 1.4499731759656653) internal successors, (64866), 44737 states have internal predecessors, (64866), 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 22:37:03,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44738 states to 44738 states and 64866 transitions. [2021-11-02 22:37:03,281 INFO L78 Accepts]: Start accepts. Automaton has 44738 states and 64866 transitions. Word has length 111 [2021-11-02 22:37:03,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:03,281 INFO L470 AbstractCegarLoop]: Abstraction has 44738 states and 64866 transitions. [2021-11-02 22:37:03,282 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 22:37:03,282 INFO L276 IsEmpty]: Start isEmpty. Operand 44738 states and 64866 transitions. [2021-11-02 22:37:03,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-02 22:37:03,295 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:03,295 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:03,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 22:37:03,295 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:37:03,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:03,296 INFO L85 PathProgramCache]: Analyzing trace with hash 766012587, now seen corresponding path program 1 times [2021-11-02 22:37:03,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:03,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988990663] [2021-11-02 22:37:03,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:03,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:03,401 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 22:37:03,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:03,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988990663] [2021-11-02 22:37:03,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988990663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:03,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:03,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:37:03,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122040020] [2021-11-02 22:37:03,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:37:03,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:03,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:37:03,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:37:03,404 INFO L87 Difference]: Start difference. First operand 44738 states and 64866 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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 22:37:09,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:09,405 INFO L93 Difference]: Finished difference Result 88688 states and 128905 transitions. [2021-11-02 22:37:09,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:37:09,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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 22:37:09,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:09,536 INFO L225 Difference]: With dead ends: 88688 [2021-11-02 22:37:09,536 INFO L226 Difference]: Without dead ends: 80974 [2021-11-02 22:37:09,557 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 22:37:09,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80974 states. [2021-11-02 22:37:13,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80974 to 52450. [2021-11-02 22:37:13,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52450 states, 52448 states have (on average 1.4490924344112264) internal successors, (76002), 52449 states have internal predecessors, (76002), 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 22:37:13,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52450 states to 52450 states and 76002 transitions. [2021-11-02 22:37:13,838 INFO L78 Accepts]: Start accepts. Automaton has 52450 states and 76002 transitions. Word has length 111 [2021-11-02 22:37:13,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:13,839 INFO L470 AbstractCegarLoop]: Abstraction has 52450 states and 76002 transitions. [2021-11-02 22:37:13,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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 22:37:13,839 INFO L276 IsEmpty]: Start isEmpty. Operand 52450 states and 76002 transitions. [2021-11-02 22:37:13,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-02 22:37:13,851 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:13,851 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:13,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 22:37:13,851 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:37:13,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:13,852 INFO L85 PathProgramCache]: Analyzing trace with hash -545390527, now seen corresponding path program 1 times [2021-11-02 22:37:13,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:13,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179914808] [2021-11-02 22:37:13,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:13,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:13,956 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:37:13,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:13,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179914808] [2021-11-02 22:37:13,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179914808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:13,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:13,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:37:13,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084396060] [2021-11-02 22:37:13,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:37:13,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:13,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:37:13,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:37:13,958 INFO L87 Difference]: Start difference. First operand 52450 states and 76002 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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 22:37:20,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:20,991 INFO L93 Difference]: Finished difference Result 91728 states and 133321 transitions. [2021-11-02 22:37:20,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:37:20,992 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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 22:37:20,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:21,107 INFO L225 Difference]: With dead ends: 91728 [2021-11-02 22:37:21,107 INFO L226 Difference]: Without dead ends: 86350 [2021-11-02 22:37:21,125 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 22:37:21,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86350 states. [2021-11-02 22:37:25,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86350 to 57826. [2021-11-02 22:37:25,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57826 states, 57824 states have (on average 1.4493981737686774) internal successors, (83810), 57825 states have internal predecessors, (83810), 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 22:37:26,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57826 states to 57826 states and 83810 transitions. [2021-11-02 22:37:26,023 INFO L78 Accepts]: Start accepts. Automaton has 57826 states and 83810 transitions. Word has length 111 [2021-11-02 22:37:26,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:26,023 INFO L470 AbstractCegarLoop]: Abstraction has 57826 states and 83810 transitions. [2021-11-02 22:37:26,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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 22:37:26,023 INFO L276 IsEmpty]: Start isEmpty. Operand 57826 states and 83810 transitions. [2021-11-02 22:37:26,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-02 22:37:26,037 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:26,037 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:37:26,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 22:37:26,038 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:37:26,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:26,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1181155843, now seen corresponding path program 1 times [2021-11-02 22:37:26,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:26,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65303744] [2021-11-02 22:37:26,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:26,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:26,104 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:37:26,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:26,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65303744] [2021-11-02 22:37:26,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65303744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:26,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:26,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:37:26,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340922160] [2021-11-02 22:37:26,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:37:26,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:26,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:37:26,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:26,107 INFO L87 Difference]: Start difference. First operand 57826 states and 83810 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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)