./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc --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 5076c3e55bd424afffa48cc9c2c4663afdcf72b1cbafe747c454c6704690d793 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:54:17,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:54:17,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:54:17,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:54:17,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:54:17,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:54:17,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:54:17,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:54:17,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:54:17,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:54:17,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:54:17,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:54:17,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:54:17,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:54:17,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:54:17,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:54:17,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:54:17,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:54:17,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:54:17,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:54:17,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:54:17,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:54:17,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:54:17,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:54:17,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:54:17,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:54:17,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:54:17,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:54:17,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:54:17,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:54:17,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:54:17,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:54:17,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:54:17,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:54:17,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:54:17,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:54:17,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:54:17,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:54:17,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:54:17,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:54:17,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:54:17,592 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:54:17,631 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:54:17,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:54:17,632 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:54:17,632 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:54:17,633 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:54:17,633 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:54:17,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:54:17,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:54:17,634 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:54:17,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:54:17,635 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:54:17,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:54:17,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:54:17,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:54:17,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:54:17,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:54:17,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:54:17,637 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:54:17,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:54:17,637 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:54:17,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:54:17,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:54:17,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:54:17,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:54:17,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:54:17,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:54:17,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:54:17,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:54:17,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:54:17,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:54:17,639 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:54:17,639 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:54:17,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:54:17,640 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_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5076c3e55bd424afffa48cc9c2c4663afdcf72b1cbafe747c454c6704690d793 [2022-11-02 20:54:17,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:54:17,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:54:17,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:54:17,976 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:54:17,977 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:54:17,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c [2022-11-02 20:54:18,048 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/data/10e7e7804/8747c1a902854d3caefc426ffef5caa1/FLAG396b88d06 [2022-11-02 20:54:18,962 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:54:18,962 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c [2022-11-02 20:54:18,988 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/data/10e7e7804/8747c1a902854d3caefc426ffef5caa1/FLAG396b88d06 [2022-11-02 20:54:19,425 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/data/10e7e7804/8747c1a902854d3caefc426ffef5caa1 [2022-11-02 20:54:19,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:54:19,431 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:54:19,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:54:19,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:54:19,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:54:19,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:54:19" (1/1) ... [2022-11-02 20:54:19,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@739f44cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:19, skipping insertion in model container [2022-11-02 20:54:19,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:54:19" (1/1) ... [2022-11-02 20:54:19,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:54:19,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:54:20,063 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c[6354,6367] [2022-11-02 20:54:20,166 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c[14102,14115] [2022-11-02 20:54:21,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:54:21,042 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:54:21,108 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c[6354,6367] [2022-11-02 20:54:21,132 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c[14102,14115] [2022-11-02 20:54:21,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:54:21,780 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:54:21,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:21 WrapperNode [2022-11-02 20:54:21,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:54:21,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:54:21,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:54:21,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:54:21,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:21" (1/1) ... [2022-11-02 20:54:21,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:21" (1/1) ... [2022-11-02 20:54:22,324 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4976 [2022-11-02 20:54:22,324 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:54:22,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:54:22,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:54:22,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:54:22,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:21" (1/1) ... [2022-11-02 20:54:22,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:21" (1/1) ... [2022-11-02 20:54:22,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:21" (1/1) ... [2022-11-02 20:54:22,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:21" (1/1) ... [2022-11-02 20:54:22,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:21" (1/1) ... [2022-11-02 20:54:22,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:21" (1/1) ... [2022-11-02 20:54:22,666 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:21" (1/1) ... [2022-11-02 20:54:22,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:21" (1/1) ... [2022-11-02 20:54:22,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:54:22,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:54:22,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:54:22,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:54:22,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:21" (1/1) ... [2022-11-02 20:54:22,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:54:22,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:54:22,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:54:22,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:54:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:54:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:54:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:54:22,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:54:23,069 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:54:23,071 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:54:28,305 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:54:28,324 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:54:28,325 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:54:28,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:54:28 BoogieIcfgContainer [2022-11-02 20:54:28,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:54:28,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:54:28,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:54:28,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:54:28,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:54:19" (1/3) ... [2022-11-02 20:54:28,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ccf751c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:54:28, skipping insertion in model container [2022-11-02 20:54:28,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:21" (2/3) ... [2022-11-02 20:54:28,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ccf751c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:54:28, skipping insertion in model container [2022-11-02 20:54:28,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:54:28" (3/3) ... [2022-11-02 20:54:28,339 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c [2022-11-02 20:54:28,366 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:54:28,366 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 20:54:28,432 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:54:28,439 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4c998f66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:54:28,439 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 20:54:28,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 878 states, 875 states have (on average 1.904) internal successors, (1666), 877 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:28,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-02 20:54:28,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:28,456 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:54:28,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:28,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:28,462 INFO L85 PathProgramCache]: Analyzing trace with hash 975463267, now seen corresponding path program 1 times [2022-11-02 20:54:28,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:28,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647634729] [2022-11-02 20:54:28,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:28,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:28,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:28,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:28,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647634729] [2022-11-02 20:54:28,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647634729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:28,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:28,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:54:28,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419049016] [2022-11-02 20:54:28,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:28,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:54:28,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:28,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:54:28,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:54:28,690 INFO L87 Difference]: Start difference. First operand has 878 states, 875 states have (on average 1.904) internal successors, (1666), 877 states have internal predecessors, (1666), 0 states have call successors, (0), 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 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:28,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:28,771 INFO L93 Difference]: Finished difference Result 1734 states and 3292 transitions. [2022-11-02 20:54:28,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:54:28,787 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-02 20:54:28,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:28,810 INFO L225 Difference]: With dead ends: 1734 [2022-11-02 20:54:28,810 INFO L226 Difference]: Without dead ends: 812 [2022-11-02 20:54:28,818 INFO L412 NwaCegarLoop]: 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 [2022-11-02 20:54:28,821 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:28,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:54:28,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-11-02 20:54:28,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 812. [2022-11-02 20:54:28,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 810 states have (on average 1.8925925925925926) internal successors, (1533), 811 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:28,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1533 transitions. [2022-11-02 20:54:28,927 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1533 transitions. Word has length 26 [2022-11-02 20:54:28,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:28,928 INFO L495 AbstractCegarLoop]: Abstraction has 812 states and 1533 transitions. [2022-11-02 20:54:28,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:28,928 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1533 transitions. [2022-11-02 20:54:28,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-02 20:54:28,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:28,931 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:54:28,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:54:28,931 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:28,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:28,934 INFO L85 PathProgramCache]: Analyzing trace with hash 157814817, now seen corresponding path program 1 times [2022-11-02 20:54:28,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:28,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501952638] [2022-11-02 20:54:28,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:28,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:29,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:29,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:29,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501952638] [2022-11-02 20:54:29,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501952638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:29,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:29,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:54:29,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912110920] [2022-11-02 20:54:29,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:29,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:54:29,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:29,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:54:29,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:54:29,198 INFO L87 Difference]: Start difference. First operand 812 states and 1533 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:29,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:29,374 INFO L93 Difference]: Finished difference Result 888 states and 1649 transitions. [2022-11-02 20:54:29,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:54:29,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-02 20:54:29,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:29,379 INFO L225 Difference]: With dead ends: 888 [2022-11-02 20:54:29,380 INFO L226 Difference]: Without dead ends: 848 [2022-11-02 20:54:29,381 INFO L412 NwaCegarLoop]: 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 [2022-11-02 20:54:29,382 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 58 mSDsluCounter, 4566 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 6095 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:29,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 6095 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:54:29,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-11-02 20:54:29,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 812. [2022-11-02 20:54:29,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 810 states have (on average 1.8728395061728396) internal successors, (1517), 811 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:29,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1517 transitions. [2022-11-02 20:54:29,408 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1517 transitions. Word has length 26 [2022-11-02 20:54:29,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:29,408 INFO L495 AbstractCegarLoop]: Abstraction has 812 states and 1517 transitions. [2022-11-02 20:54:29,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:29,409 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1517 transitions. [2022-11-02 20:54:29,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-02 20:54:29,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:29,415 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:54:29,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:54:29,415 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:29,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:29,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1324654887, now seen corresponding path program 1 times [2022-11-02 20:54:29,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:29,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171082617] [2022-11-02 20:54:29,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:29,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:29,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:29,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171082617] [2022-11-02 20:54:29,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171082617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:29,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:29,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:54:29,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826115145] [2022-11-02 20:54:29,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:29,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:54:29,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:29,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:54:29,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:54:29,585 INFO L87 Difference]: Start difference. First operand 812 states and 1517 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:29,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:29,633 INFO L93 Difference]: Finished difference Result 878 states and 1619 transitions. [2022-11-02 20:54:29,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:54:29,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-11-02 20:54:29,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:29,639 INFO L225 Difference]: With dead ends: 878 [2022-11-02 20:54:29,639 INFO L226 Difference]: Without dead ends: 842 [2022-11-02 20:54:29,640 INFO L412 NwaCegarLoop]: 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 [2022-11-02 20:54:29,641 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1485 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:29,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1613 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:54:29,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-11-02 20:54:29,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 840. [2022-11-02 20:54:29,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 838 states have (on average 1.8627684964200477) internal successors, (1561), 839 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:29,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1561 transitions. [2022-11-02 20:54:29,665 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1561 transitions. Word has length 41 [2022-11-02 20:54:29,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:29,666 INFO L495 AbstractCegarLoop]: Abstraction has 840 states and 1561 transitions. [2022-11-02 20:54:29,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:29,666 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1561 transitions. [2022-11-02 20:54:29,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-02 20:54:29,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:29,667 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:54:29,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:54:29,668 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:29,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:29,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1376027727, now seen corresponding path program 1 times [2022-11-02 20:54:29,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:29,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117797498] [2022-11-02 20:54:29,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:29,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:29,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:29,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:29,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117797498] [2022-11-02 20:54:29,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117797498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:29,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:29,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:54:29,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937920405] [2022-11-02 20:54:29,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:29,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:54:29,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:29,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:54:29,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:54:29,766 INFO L87 Difference]: Start difference. First operand 840 states and 1561 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:29,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:29,905 INFO L93 Difference]: Finished difference Result 1224 states and 2161 transitions. [2022-11-02 20:54:29,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:54:29,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-11-02 20:54:29,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:29,911 INFO L225 Difference]: With dead ends: 1224 [2022-11-02 20:54:29,911 INFO L226 Difference]: Without dead ends: 1160 [2022-11-02 20:54:29,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:54:29,913 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 4709 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4709 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:29,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4709 Valid, 1779 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:54:29,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-11-02 20:54:29,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 902. [2022-11-02 20:54:29,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 900 states have (on average 1.84) internal successors, (1656), 901 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:29,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1656 transitions. [2022-11-02 20:54:29,943 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1656 transitions. Word has length 41 [2022-11-02 20:54:29,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:29,944 INFO L495 AbstractCegarLoop]: Abstraction has 902 states and 1656 transitions. [2022-11-02 20:54:29,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:29,945 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1656 transitions. [2022-11-02 20:54:29,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-02 20:54:29,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:29,952 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:54:29,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:54:29,952 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:29,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:29,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1902982177, now seen corresponding path program 1 times [2022-11-02 20:54:29,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:29,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630577502] [2022-11-02 20:54:29,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:29,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:30,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:30,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:30,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630577502] [2022-11-02 20:54:30,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630577502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:30,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:30,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:54:30,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257694188] [2022-11-02 20:54:30,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:30,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:54:30,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:30,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:54:30,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:54:30,080 INFO L87 Difference]: Start difference. First operand 902 states and 1656 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:30,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:30,129 INFO L93 Difference]: Finished difference Result 1089 states and 1943 transitions. [2022-11-02 20:54:30,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:54:30,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-11-02 20:54:30,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:30,134 INFO L225 Difference]: With dead ends: 1089 [2022-11-02 20:54:30,135 INFO L226 Difference]: Without dead ends: 963 [2022-11-02 20:54:30,135 INFO L412 NwaCegarLoop]: 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 [2022-11-02 20:54:30,142 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 1469 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:30,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1469 Valid, 1565 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:54:30,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-11-02 20:54:30,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 961. [2022-11-02 20:54:30,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 959 states have (on average 1.8185610010427529) internal successors, (1744), 960 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:30,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1744 transitions. [2022-11-02 20:54:30,183 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1744 transitions. Word has length 43 [2022-11-02 20:54:30,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:30,188 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1744 transitions. [2022-11-02 20:54:30,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:30,189 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1744 transitions. [2022-11-02 20:54:30,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-02 20:54:30,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:30,193 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:54:30,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:54:30,193 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:30,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:30,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1836488665, now seen corresponding path program 1 times [2022-11-02 20:54:30,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:30,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265242436] [2022-11-02 20:54:30,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:30,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:30,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:30,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:30,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265242436] [2022-11-02 20:54:30,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265242436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:30,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:30,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:54:30,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208695698] [2022-11-02 20:54:30,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:30,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:54:30,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:30,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:54:30,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:54:30,457 INFO L87 Difference]: Start difference. First operand 961 states and 1744 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:30,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:30,568 INFO L93 Difference]: Finished difference Result 1146 states and 2026 transitions. [2022-11-02 20:54:30,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:54:30,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-11-02 20:54:30,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:30,573 INFO L225 Difference]: With dead ends: 1146 [2022-11-02 20:54:30,573 INFO L226 Difference]: Without dead ends: 963 [2022-11-02 20:54:30,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:54:30,575 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 1528 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:30,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 1685 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:54:30,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-11-02 20:54:30,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 961. [2022-11-02 20:54:30,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 959 states have (on average 1.8154327424400416) internal successors, (1741), 960 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:30,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1741 transitions. [2022-11-02 20:54:30,604 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1741 transitions. Word has length 43 [2022-11-02 20:54:30,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:30,605 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1741 transitions. [2022-11-02 20:54:30,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:30,605 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1741 transitions. [2022-11-02 20:54:30,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-02 20:54:30,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:30,606 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:54:30,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:54:30,606 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:30,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:30,607 INFO L85 PathProgramCache]: Analyzing trace with hash -47574589, now seen corresponding path program 1 times [2022-11-02 20:54:30,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:30,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764162814] [2022-11-02 20:54:30,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:30,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:30,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:30,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:30,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764162814] [2022-11-02 20:54:30,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764162814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:30,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:30,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:54:30,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619307364] [2022-11-02 20:54:30,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:30,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:54:30,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:30,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:54:30,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:54:30,652 INFO L87 Difference]: Start difference. First operand 961 states and 1741 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:30,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:30,701 INFO L93 Difference]: Finished difference Result 1291 states and 2237 transitions. [2022-11-02 20:54:30,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:54:30,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-11-02 20:54:30,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:30,708 INFO L225 Difference]: With dead ends: 1291 [2022-11-02 20:54:30,708 INFO L226 Difference]: Without dead ends: 1108 [2022-11-02 20:54:30,709 INFO L412 NwaCegarLoop]: 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 [2022-11-02 20:54:30,714 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 1477 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:30,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 1603 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:54:30,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2022-11-02 20:54:30,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1106. [2022-11-02 20:54:30,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1104 states have (on average 1.7681159420289856) internal successors, (1952), 1105 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:30,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1952 transitions. [2022-11-02 20:54:30,754 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1952 transitions. Word has length 43 [2022-11-02 20:54:30,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:30,755 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 1952 transitions. [2022-11-02 20:54:30,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:30,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1952 transitions. [2022-11-02 20:54:30,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-02 20:54:30,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:30,756 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:54:30,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:54:30,757 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:30,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:30,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1199933027, now seen corresponding path program 1 times [2022-11-02 20:54:30,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:30,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454043604] [2022-11-02 20:54:30,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:30,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:30,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:30,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:30,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454043604] [2022-11-02 20:54:30,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454043604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:30,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:30,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:54:30,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890027953] [2022-11-02 20:54:30,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:30,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:54:30,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:30,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:54:30,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:54:30,806 INFO L87 Difference]: Start difference. First operand 1106 states and 1952 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:30,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:30,875 INFO L93 Difference]: Finished difference Result 1690 states and 2810 transitions. [2022-11-02 20:54:30,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:54:30,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-11-02 20:54:30,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:30,881 INFO L225 Difference]: With dead ends: 1690 [2022-11-02 20:54:30,882 INFO L226 Difference]: Without dead ends: 1362 [2022-11-02 20:54:30,883 INFO L412 NwaCegarLoop]: 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 [2022-11-02 20:54:30,883 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 1481 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:30,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1612 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:54:30,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2022-11-02 20:54:30,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1360. [2022-11-02 20:54:30,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1358 states have (on average 1.6995581737849779) internal successors, (2308), 1359 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:30,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 2308 transitions. [2022-11-02 20:54:30,956 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 2308 transitions. Word has length 43 [2022-11-02 20:54:30,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:30,956 INFO L495 AbstractCegarLoop]: Abstraction has 1360 states and 2308 transitions. [2022-11-02 20:54:30,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:30,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 2308 transitions. [2022-11-02 20:54:30,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-02 20:54:30,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:30,959 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:54:30,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:54:30,959 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:30,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:30,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1511296967, now seen corresponding path program 1 times [2022-11-02 20:54:30,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:30,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316226967] [2022-11-02 20:54:30,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:30,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:31,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:31,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:31,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316226967] [2022-11-02 20:54:31,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316226967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:31,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:31,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:54:31,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665750586] [2022-11-02 20:54:31,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:31,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:54:31,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:31,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:54:31,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:54:31,256 INFO L87 Difference]: Start difference. First operand 1360 states and 2308 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:31,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:31,528 INFO L93 Difference]: Finished difference Result 1883 states and 3036 transitions. [2022-11-02 20:54:31,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:54:31,529 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-11-02 20:54:31,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:31,535 INFO L225 Difference]: With dead ends: 1883 [2022-11-02 20:54:31,535 INFO L226 Difference]: Without dead ends: 1881 [2022-11-02 20:54:31,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:54:31,537 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 331 mSDsluCounter, 8972 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 10503 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:31,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 10503 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:54:31,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2022-11-02 20:54:31,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1408. [2022-11-02 20:54:31,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1406 states have (on average 1.6728307254623045) internal successors, (2352), 1407 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:31,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 2352 transitions. [2022-11-02 20:54:31,628 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 2352 transitions. Word has length 44 [2022-11-02 20:54:31,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:31,629 INFO L495 AbstractCegarLoop]: Abstraction has 1408 states and 2352 transitions. [2022-11-02 20:54:31,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:31,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 2352 transitions. [2022-11-02 20:54:31,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 20:54:31,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:31,630 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:31,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:54:31,630 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:31,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:31,631 INFO L85 PathProgramCache]: Analyzing trace with hash -213997176, now seen corresponding path program 1 times [2022-11-02 20:54:31,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:31,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71230987] [2022-11-02 20:54:31,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:31,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:31,727 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:54:31,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:31,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71230987] [2022-11-02 20:54:31,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71230987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:31,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:31,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:54:31,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348319476] [2022-11-02 20:54:31,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:31,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:54:31,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:31,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:54:31,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:54:31,729 INFO L87 Difference]: Start difference. First operand 1408 states and 2352 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:32,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:32,020 INFO L93 Difference]: Finished difference Result 3436 states and 5200 transitions. [2022-11-02 20:54:32,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:54:32,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-02 20:54:32,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:32,030 INFO L225 Difference]: With dead ends: 3436 [2022-11-02 20:54:32,030 INFO L226 Difference]: Without dead ends: 2806 [2022-11-02 20:54:32,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:54:32,033 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 3075 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3075 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:32,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3075 Valid, 3177 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:54:32,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2022-11-02 20:54:32,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2036. [2022-11-02 20:54:32,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2036 states, 2034 states have (on average 1.5870206489675516) internal successors, (3228), 2035 states have internal predecessors, (3228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:32,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2036 states to 2036 states and 3228 transitions. [2022-11-02 20:54:32,302 INFO L78 Accepts]: Start accepts. Automaton has 2036 states and 3228 transitions. Word has length 64 [2022-11-02 20:54:32,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:32,303 INFO L495 AbstractCegarLoop]: Abstraction has 2036 states and 3228 transitions. [2022-11-02 20:54:32,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:32,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2036 states and 3228 transitions. [2022-11-02 20:54:32,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 20:54:32,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:32,305 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:32,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:54:32,306 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:32,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:32,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1033510440, now seen corresponding path program 1 times [2022-11-02 20:54:32,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:32,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582886280] [2022-11-02 20:54:32,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:32,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:32,422 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:54:32,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:32,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582886280] [2022-11-02 20:54:32,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582886280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:32,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:32,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:54:32,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073986509] [2022-11-02 20:54:32,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:32,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:54:32,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:32,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:54:32,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:54:32,426 INFO L87 Difference]: Start difference. First operand 2036 states and 3228 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:32,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:32,919 INFO L93 Difference]: Finished difference Result 4064 states and 6076 transitions. [2022-11-02 20:54:32,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:54:32,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-02 20:54:32,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:32,931 INFO L225 Difference]: With dead ends: 4064 [2022-11-02 20:54:32,932 INFO L226 Difference]: Without dead ends: 3434 [2022-11-02 20:54:32,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:54:32,934 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 3065 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3065 SdHoareTripleChecker+Valid, 3213 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:32,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3065 Valid, 3213 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:54:32,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2022-11-02 20:54:33,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 2980. [2022-11-02 20:54:33,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2980 states, 2978 states have (on average 1.5218267293485561) internal successors, (4532), 2979 states have internal predecessors, (4532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:33,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2980 states to 2980 states and 4532 transitions. [2022-11-02 20:54:33,224 INFO L78 Accepts]: Start accepts. Automaton has 2980 states and 4532 transitions. Word has length 64 [2022-11-02 20:54:33,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:33,226 INFO L495 AbstractCegarLoop]: Abstraction has 2980 states and 4532 transitions. [2022-11-02 20:54:33,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:33,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2980 states and 4532 transitions. [2022-11-02 20:54:33,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 20:54:33,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:33,228 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:33,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:54:33,228 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:33,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:33,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1792023874, now seen corresponding path program 1 times [2022-11-02 20:54:33,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:33,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658018572] [2022-11-02 20:54:33,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:33,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:33,384 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:54:33,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:33,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658018572] [2022-11-02 20:54:33,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658018572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:33,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:33,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:54:33,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446840385] [2022-11-02 20:54:33,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:33,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:54:33,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:33,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:54:33,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:54:33,387 INFO L87 Difference]: Start difference. First operand 2980 states and 4532 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:33,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:33,784 INFO L93 Difference]: Finished difference Result 4332 states and 6456 transitions. [2022-11-02 20:54:33,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:54:33,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-02 20:54:33,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:33,798 INFO L225 Difference]: With dead ends: 4332 [2022-11-02 20:54:33,798 INFO L226 Difference]: Without dead ends: 3882 [2022-11-02 20:54:33,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:54:33,801 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 3064 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3064 SdHoareTripleChecker+Valid, 3189 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:33,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3064 Valid, 3189 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:54:33,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3882 states. [2022-11-02 20:54:34,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3882 to 3428. [2022-11-02 20:54:34,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 3426 states have (on average 1.5072971395213077) internal successors, (5164), 3427 states have internal predecessors, (5164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:34,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 5164 transitions. [2022-11-02 20:54:34,110 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 5164 transitions. Word has length 64 [2022-11-02 20:54:34,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:34,110 INFO L495 AbstractCegarLoop]: Abstraction has 3428 states and 5164 transitions. [2022-11-02 20:54:34,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:34,111 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 5164 transitions. [2022-11-02 20:54:34,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 20:54:34,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:34,112 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:54:34,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:54:34,113 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:34,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:34,113 INFO L85 PathProgramCache]: Analyzing trace with hash 322769619, now seen corresponding path program 1 times [2022-11-02 20:54:34,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:34,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734443979] [2022-11-02 20:54:34,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:34,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:34,217 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:34,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:34,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734443979] [2022-11-02 20:54:34,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734443979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:34,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:34,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:54:34,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40608607] [2022-11-02 20:54:34,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:34,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:54:34,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:34,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:54:34,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:54:34,220 INFO L87 Difference]: Start difference. First operand 3428 states and 5164 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:34,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:34,559 INFO L93 Difference]: Finished difference Result 6080 states and 8866 transitions. [2022-11-02 20:54:34,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:54:34,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-11-02 20:54:34,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:34,571 INFO L225 Difference]: With dead ends: 6080 [2022-11-02 20:54:34,571 INFO L226 Difference]: Without dead ends: 3430 [2022-11-02 20:54:34,574 INFO L412 NwaCegarLoop]: 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 [2022-11-02 20:54:34,575 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 33 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:34,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3042 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:54:34,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3430 states. [2022-11-02 20:54:34,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3430 to 3428. [2022-11-02 20:54:34,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 3426 states have (on average 1.4927028604786923) internal successors, (5114), 3427 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:34,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 5114 transitions. [2022-11-02 20:54:34,859 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 5114 transitions. Word has length 65 [2022-11-02 20:54:34,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:34,859 INFO L495 AbstractCegarLoop]: Abstraction has 3428 states and 5114 transitions. [2022-11-02 20:54:34,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:34,859 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 5114 transitions. [2022-11-02 20:54:34,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 20:54:34,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:34,861 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:34,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:54:34,861 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:34,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:34,862 INFO L85 PathProgramCache]: Analyzing trace with hash 235650825, now seen corresponding path program 1 times [2022-11-02 20:54:34,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:34,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415546077] [2022-11-02 20:54:34,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:34,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:34,939 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:34,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:34,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415546077] [2022-11-02 20:54:34,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415546077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:34,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:34,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:54:34,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728002308] [2022-11-02 20:54:34,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:34,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:54:34,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:34,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:54:34,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:54:34,942 INFO L87 Difference]: Start difference. First operand 3428 states and 5114 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:35,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:35,104 INFO L93 Difference]: Finished difference Result 4756 states and 6941 transitions. [2022-11-02 20:54:35,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:54:35,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-11-02 20:54:35,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:35,111 INFO L225 Difference]: With dead ends: 4756 [2022-11-02 20:54:35,111 INFO L226 Difference]: Without dead ends: 2106 [2022-11-02 20:54:35,114 INFO L412 NwaCegarLoop]: 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 [2022-11-02 20:54:35,115 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 29 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3027 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:35,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3027 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:54:35,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2022-11-02 20:54:35,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2104. [2022-11-02 20:54:35,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 2102 states have (on average 1.5528068506184587) internal successors, (3264), 2103 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:35,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 3264 transitions. [2022-11-02 20:54:35,318 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 3264 transitions. Word has length 65 [2022-11-02 20:54:35,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:35,319 INFO L495 AbstractCegarLoop]: Abstraction has 2104 states and 3264 transitions. [2022-11-02 20:54:35,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:35,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 3264 transitions. [2022-11-02 20:54:35,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 20:54:35,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:35,320 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:35,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:54:35,321 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:35,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:35,321 INFO L85 PathProgramCache]: Analyzing trace with hash -883624385, now seen corresponding path program 1 times [2022-11-02 20:54:35,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:35,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318821509] [2022-11-02 20:54:35,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:35,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:35,739 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:35,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:35,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318821509] [2022-11-02 20:54:35,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318821509] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:54:35,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415121086] [2022-11-02 20:54:35,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:35,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:54:35,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:54:35,746 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:54:35,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:54:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:35,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:54:35,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:36,042 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:54:36,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:54:36,313 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:54:36,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415121086] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:54:36,313 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:54:36,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 4] total 20 [2022-11-02 20:54:36,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565958365] [2022-11-02 20:54:36,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:54:36,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:54:36,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:36,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:54:36,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:54:36,316 INFO L87 Difference]: Start difference. First operand 2104 states and 3264 transitions. Second operand has 20 states, 20 states have (on average 8.9) internal successors, (178), 20 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:43,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:43,385 INFO L93 Difference]: Finished difference Result 15070 states and 20579 transitions. [2022-11-02 20:54:43,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-11-02 20:54:43,386 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.9) internal successors, (178), 20 states have internal predecessors, (178), 0 states have call successors, (0), 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 65 [2022-11-02 20:54:43,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:43,423 INFO L225 Difference]: With dead ends: 15070 [2022-11-02 20:54:43,423 INFO L226 Difference]: Without dead ends: 13744 [2022-11-02 20:54:43,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6647 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2917, Invalid=13853, Unknown=0, NotChecked=0, Total=16770 [2022-11-02 20:54:43,435 INFO L413 NwaCegarLoop]: 1592 mSDtfsCounter, 15815 mSDsluCounter, 8489 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15815 SdHoareTripleChecker+Valid, 10081 SdHoareTripleChecker+Invalid, 1903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:43,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15815 Valid, 10081 Invalid, 1903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 1677 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 20:54:43,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13744 states. [2022-11-02 20:54:44,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13744 to 7266. [2022-11-02 20:54:44,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7266 states, 7264 states have (on average 1.3747246696035242) internal successors, (9986), 7265 states have internal predecessors, (9986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:44,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7266 states to 7266 states and 9986 transitions. [2022-11-02 20:54:44,208 INFO L78 Accepts]: Start accepts. Automaton has 7266 states and 9986 transitions. Word has length 65 [2022-11-02 20:54:44,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:44,209 INFO L495 AbstractCegarLoop]: Abstraction has 7266 states and 9986 transitions. [2022-11-02 20:54:44,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.9) internal successors, (178), 20 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:44,210 INFO L276 IsEmpty]: Start isEmpty. Operand 7266 states and 9986 transitions. [2022-11-02 20:54:44,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 20:54:44,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:44,211 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:54:44,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 20:54:44,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 20:54:44,427 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:44,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:44,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1505794396, now seen corresponding path program 1 times [2022-11-02 20:54:44,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:44,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689462624] [2022-11-02 20:54:44,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:44,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:44,815 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:44,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:44,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689462624] [2022-11-02 20:54:44,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689462624] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:54:44,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824854704] [2022-11-02 20:54:44,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:44,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:54:44,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:54:44,817 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:54:44,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:54:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:44,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:54:44,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:45,560 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:45,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:54:46,229 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:46,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824854704] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:54:46,229 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:54:46,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-11-02 20:54:46,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245788306] [2022-11-02 20:54:46,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:54:46,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 20:54:46,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:46,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 20:54:46,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:54:46,231 INFO L87 Difference]: Start difference. First operand 7266 states and 9986 transitions. Second operand has 21 states, 21 states have (on average 6.904761904761905) internal successors, (145), 20 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:49,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:49,662 INFO L93 Difference]: Finished difference Result 28133 states and 37005 transitions. [2022-11-02 20:54:49,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:54:49,662 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.904761904761905) internal successors, (145), 20 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 20:54:49,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:49,711 INFO L225 Difference]: With dead ends: 28133 [2022-11-02 20:54:49,711 INFO L226 Difference]: Without dead ends: 23314 [2022-11-02 20:54:49,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=355, Invalid=1051, Unknown=0, NotChecked=0, Total=1406 [2022-11-02 20:54:49,721 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 12635 mSDsluCounter, 4937 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12635 SdHoareTripleChecker+Valid, 6472 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:49,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12635 Valid, 6472 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:54:49,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23314 states. [2022-11-02 20:54:51,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23314 to 14977. [2022-11-02 20:54:51,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14977 states, 14975 states have (on average 1.3347579298831385) internal successors, (19988), 14976 states have internal predecessors, (19988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:51,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14977 states to 14977 states and 19988 transitions. [2022-11-02 20:54:51,410 INFO L78 Accepts]: Start accepts. Automaton has 14977 states and 19988 transitions. Word has length 66 [2022-11-02 20:54:51,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:51,411 INFO L495 AbstractCegarLoop]: Abstraction has 14977 states and 19988 transitions. [2022-11-02 20:54:51,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.904761904761905) internal successors, (145), 20 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:54:51,411 INFO L276 IsEmpty]: Start isEmpty. Operand 14977 states and 19988 transitions. [2022-11-02 20:54:51,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 20:54:51,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:51,412 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:54:51,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:54:51,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 20:54:51,629 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:51,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:51,629 INFO L85 PathProgramCache]: Analyzing trace with hash 616171932, now seen corresponding path program 1 times [2022-11-02 20:54:51,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:54:51,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396191780] [2022-11-02 20:54:51,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:51,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:54:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:52,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:54:52,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396191780] [2022-11-02 20:54:52,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396191780] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:54:52,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904775517] [2022-11-02 20:54:52,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:52,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:54:52,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:54:52,008 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:54:52,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:54:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:52,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:54:52,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:53,391 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:53,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:54:54,530 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:54,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904775517] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:54:54,532 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:54:54,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2022-11-02 20:54:54,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48498100] [2022-11-02 20:54:54,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:54:54,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 20:54:54,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:54:54,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 20:54:54,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=888, Unknown=0, NotChecked=0, Total=992 [2022-11-02 20:54:54,536 INFO L87 Difference]: Start difference. First operand 14977 states and 19988 transitions. Second operand has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:36,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:36,295 INFO L93 Difference]: Finished difference Result 248292 states and 320981 transitions. [2022-11-02 20:56:36,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 612 states. [2022-11-02 20:56:36,296 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 20:56:36,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:37,073 INFO L225 Difference]: With dead ends: 248292 [2022-11-02 20:56:37,073 INFO L226 Difference]: Without dead ends: 234093 [2022-11-02 20:56:37,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 639 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208473 ImplicationChecksByTransitivity, 58.3s TimeCoverageRelationStatistics Valid=46191, Invalid=364049, Unknown=0, NotChecked=0, Total=410240 [2022-11-02 20:56:37,170 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 30370 mSDsluCounter, 18357 mSDsCounter, 0 mSdLazyCounter, 3666 mSolverCounterSat, 1975 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30370 SdHoareTripleChecker+Valid, 19993 SdHoareTripleChecker+Invalid, 5641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1975 IncrementalHoareTripleChecker+Valid, 3666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:37,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30370 Valid, 19993 Invalid, 5641 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1975 Valid, 3666 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-02 20:56:37,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234093 states. [2022-11-02 20:56:47,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234093 to 42557. [2022-11-02 20:56:47,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42557 states, 42555 states have (on average 1.311996240159793) internal successors, (55832), 42556 states have internal predecessors, (55832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:47,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42557 states to 42557 states and 55832 transitions. [2022-11-02 20:56:47,467 INFO L78 Accepts]: Start accepts. Automaton has 42557 states and 55832 transitions. Word has length 66 [2022-11-02 20:56:47,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:47,468 INFO L495 AbstractCegarLoop]: Abstraction has 42557 states and 55832 transitions. [2022-11-02 20:56:47,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:47,468 INFO L276 IsEmpty]: Start isEmpty. Operand 42557 states and 55832 transitions. [2022-11-02 20:56:47,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 20:56:47,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:47,471 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:56:47,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:47,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1503a222-9b3d-490a-a850-b1bce9cb40aa/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 20:56:47,697 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:47,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:47,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1486365826, now seen corresponding path program 1 times [2022-11-02 20:56:47,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:47,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57355908] [2022-11-02 20:56:47,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:47,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:47,808 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:56:47,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:47,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57355908] [2022-11-02 20:56:47,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57355908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:47,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:47,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:56:47,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752064938] [2022-11-02 20:56:47,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:47,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:56:47,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:47,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:56:47,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:56:47,811 INFO L87 Difference]: Start difference. First operand 42557 states and 55832 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)