./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d124d2-7a9c-4613-b45c-87f7eca306d4/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d124d2-7a9c-4613-b45c-87f7eca306d4/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_40d124d2-7a9c-4613-b45c-87f7eca306d4/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d124d2-7a9c-4613-b45c-87f7eca306d4/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d124d2-7a9c-4613-b45c-87f7eca306d4/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_40d124d2-7a9c-4613-b45c-87f7eca306d4/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 6c5b756d724a9cd5d9c89c4b12a854260c3278a67df891fb3233689095aa59ca --- 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 19:53:56,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:53:56,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:53:56,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:53:56,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:53:56,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:53:56,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:53:56,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:53:56,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:53:56,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:53:56,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:53:56,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:53:56,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:53:56,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:53:56,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:53:56,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:53:56,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:53:56,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:53:56,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:53:56,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:53:56,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:53:56,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:53:56,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:53:56,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:53:56,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:53:56,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:53:56,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:53:56,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:53:56,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:53:56,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:53:56,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:53:56,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:53:56,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:53:56,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:53:56,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:53:56,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:53:56,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:53:56,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:53:56,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:53:56,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:53:56,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:53:56,497 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d124d2-7a9c-4613-b45c-87f7eca306d4/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 19:53:56,541 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:53:56,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:53:56,542 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:53:56,542 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:53:56,543 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:53:56,543 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:53:56,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:53:56,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:53:56,544 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:53:56,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:53:56,546 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 19:53:56,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 19:53:56,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 19:53:56,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:53:56,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:53:56,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:53:56,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:53:56,547 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 19:53:56,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:53:56,548 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:53:56,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:53:56,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:53:56,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:53:56,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:53:56,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:53:56,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:53:56,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:53:56,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:53:56,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 19:53:56,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 19:53:56,550 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:53:56,550 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:53:56,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:53:56,551 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_40d124d2-7a9c-4613-b45c-87f7eca306d4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d124d2-7a9c-4613-b45c-87f7eca306d4/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c5b756d724a9cd5d9c89c4b12a854260c3278a67df891fb3233689095aa59ca [2022-11-02 19:53:56,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:53:56,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:53:56,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:53:56,874 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:53:56,874 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:53:56,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d124d2-7a9c-4613-b45c-87f7eca306d4/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-11-02 19:53:56,946 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d124d2-7a9c-4613-b45c-87f7eca306d4/bin/uautomizer-Dbtcem3rbc/data/62bd2f3a7/447734f8b4e64b82bc2c079b0d04d181/FLAG8fd716cd2 [2022-11-02 19:53:57,506 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:53:57,507 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d124d2-7a9c-4613-b45c-87f7eca306d4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-11-02 19:53:57,517 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d124d2-7a9c-4613-b45c-87f7eca306d4/bin/uautomizer-Dbtcem3rbc/data/62bd2f3a7/447734f8b4e64b82bc2c079b0d04d181/FLAG8fd716cd2 [2022-11-02 19:53:57,816 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d124d2-7a9c-4613-b45c-87f7eca306d4/bin/uautomizer-Dbtcem3rbc/data/62bd2f3a7/447734f8b4e64b82bc2c079b0d04d181 [2022-11-02 19:53:57,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:53:57,820 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:53:57,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:53:57,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:53:57,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:53:57,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:53:57" (1/1) ... [2022-11-02 19:53:57,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17e03ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:57, skipping insertion in model container [2022-11-02 19:53:57,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:53:57" (1/1) ... [2022-11-02 19:53:57,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:53:57,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:53:58,128 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_40d124d2-7a9c-4613-b45c-87f7eca306d4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[6320,6333] [2022-11-02 19:53:58,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:53:58,206 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:53:58,278 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_40d124d2-7a9c-4613-b45c-87f7eca306d4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[6320,6333] [2022-11-02 19:53:58,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:53:58,356 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:53:58,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:58 WrapperNode [2022-11-02 19:53:58,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:53:58,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:53:58,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:53:58,359 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:53:58,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:58" (1/1) ... [2022-11-02 19:53:58,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:58" (1/1) ... [2022-11-02 19:53:58,438 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 523 [2022-11-02 19:53:58,439 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:53:58,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:53:58,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:53:58,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:53:58,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:58" (1/1) ... [2022-11-02 19:53:58,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:58" (1/1) ... [2022-11-02 19:53:58,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:58" (1/1) ... [2022-11-02 19:53:58,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:58" (1/1) ... [2022-11-02 19:53:58,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:58" (1/1) ... [2022-11-02 19:53:58,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:58" (1/1) ... [2022-11-02 19:53:58,468 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:58" (1/1) ... [2022-11-02 19:53:58,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:58" (1/1) ... [2022-11-02 19:53:58,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:53:58,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:53:58,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:53:58,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:53:58,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:58" (1/1) ... [2022-11-02 19:53:58,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:53:58,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d124d2-7a9c-4613-b45c-87f7eca306d4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:53:58,508 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d124d2-7a9c-4613-b45c-87f7eca306d4/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:53:58,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d124d2-7a9c-4613-b45c-87f7eca306d4/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:53:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 19:53:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 19:53:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:53:58,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:53:58,777 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:53:58,780 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:53:59,347 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:53:59,357 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:53:59,357 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 19:53:59,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:53:59 BoogieIcfgContainer [2022-11-02 19:53:59,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:53:59,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:53:59,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:53:59,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:53:59,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:53:57" (1/3) ... [2022-11-02 19:53:59,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8260aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:53:59, skipping insertion in model container [2022-11-02 19:53:59,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:58" (2/3) ... [2022-11-02 19:53:59,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8260aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:53:59, skipping insertion in model container [2022-11-02 19:53:59,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:53:59" (3/3) ... [2022-11-02 19:53:59,373 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-11-02 19:53:59,393 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:53:59,393 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 19:53:59,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:53:59,477 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;@3a9addd4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:53:59,477 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 19:53:59,496 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 134 states have (on average 1.7014925373134329) internal successors, (228), 135 states have internal predecessors, (228), 0 states have call successors, (0), 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 19:53:59,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-02 19:53:59,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:59,508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:59,508 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:59,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:59,524 INFO L85 PathProgramCache]: Analyzing trace with hash -793823884, now seen corresponding path program 1 times [2022-11-02 19:53:59,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:59,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391603333] [2022-11-02 19:53:59,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:59,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:00,008 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 19:54:00,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:00,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391603333] [2022-11-02 19:54:00,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391603333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:00,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:00,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:54:00,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845179657] [2022-11-02 19:54:00,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:00,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:54:00,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:00,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:54:00,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:54:00,062 INFO L87 Difference]: Start difference. First operand has 136 states, 134 states have (on average 1.7014925373134329) internal successors, (228), 135 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:00,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:00,211 INFO L93 Difference]: Finished difference Result 322 states and 522 transitions. [2022-11-02 19:54:00,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:54:00,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-11-02 19:54:00,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:00,232 INFO L225 Difference]: With dead ends: 322 [2022-11-02 19:54:00,233 INFO L226 Difference]: Without dead ends: 215 [2022-11-02 19:54:00,238 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 19:54:00,242 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 174 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:00,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 504 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:54:00,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-02 19:54:00,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 213. [2022-11-02 19:54:00,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.5047169811320755) internal successors, (319), 212 states have internal predecessors, (319), 0 states have call successors, (0), 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 19:54:00,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 319 transitions. [2022-11-02 19:54:00,328 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 319 transitions. Word has length 60 [2022-11-02 19:54:00,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:00,329 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 319 transitions. [2022-11-02 19:54:00,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:00,330 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 319 transitions. [2022-11-02 19:54:00,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-02 19:54:00,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:00,334 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:00,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 19:54:00,334 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:00,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:00,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1200786689, now seen corresponding path program 1 times [2022-11-02 19:54:00,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:00,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067299506] [2022-11-02 19:54:00,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:00,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:00,479 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 19:54:00,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:00,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067299506] [2022-11-02 19:54:00,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067299506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:00,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:00,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:54:00,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384543644] [2022-11-02 19:54:00,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:00,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:54:00,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:00,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:54:00,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:54:00,483 INFO L87 Difference]: Start difference. First operand 213 states and 319 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:00,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:00,579 INFO L93 Difference]: Finished difference Result 537 states and 835 transitions. [2022-11-02 19:54:00,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:54:00,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-02 19:54:00,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:00,593 INFO L225 Difference]: With dead ends: 537 [2022-11-02 19:54:00,593 INFO L226 Difference]: Without dead ends: 359 [2022-11-02 19:54:00,594 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 19:54:00,595 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 139 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 443 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 19:54:00,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 443 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:54:00,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-02 19:54:00,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 357. [2022-11-02 19:54:00,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.5393258426966292) internal successors, (548), 356 states have internal predecessors, (548), 0 states have call successors, (0), 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 19:54:00,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 548 transitions. [2022-11-02 19:54:00,685 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 548 transitions. Word has length 61 [2022-11-02 19:54:00,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:00,686 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 548 transitions. [2022-11-02 19:54:00,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:00,688 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 548 transitions. [2022-11-02 19:54:00,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 19:54:00,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:00,692 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:00,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 19:54:00,693 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:00,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:00,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1872640227, now seen corresponding path program 1 times [2022-11-02 19:54:00,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:00,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560398861] [2022-11-02 19:54:00,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:00,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:00,872 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 19:54:00,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:00,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560398861] [2022-11-02 19:54:00,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560398861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:00,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:00,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:54:00,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185529510] [2022-11-02 19:54:00,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:00,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:54:00,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:00,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:54:00,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:54:00,877 INFO L87 Difference]: Start difference. First operand 357 states and 548 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:00,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:00,973 INFO L93 Difference]: Finished difference Result 937 states and 1470 transitions. [2022-11-02 19:54:00,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:54:00,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-02 19:54:00,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:00,978 INFO L225 Difference]: With dead ends: 937 [2022-11-02 19:54:00,978 INFO L226 Difference]: Without dead ends: 615 [2022-11-02 19:54:00,983 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 19:54:00,991 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 134 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 428 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 19:54:00,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 428 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:54:00,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-11-02 19:54:01,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 613. [2022-11-02 19:54:01,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 612 states have (on average 1.5555555555555556) internal successors, (952), 612 states have internal predecessors, (952), 0 states have call successors, (0), 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 19:54:01,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 952 transitions. [2022-11-02 19:54:01,093 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 952 transitions. Word has length 62 [2022-11-02 19:54:01,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:01,096 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 952 transitions. [2022-11-02 19:54:01,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:01,096 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 952 transitions. [2022-11-02 19:54:01,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-02 19:54:01,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:01,100 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:01,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 19:54:01,101 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:01,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:01,102 INFO L85 PathProgramCache]: Analyzing trace with hash -562045070, now seen corresponding path program 1 times [2022-11-02 19:54:01,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:01,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093860929] [2022-11-02 19:54:01,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:01,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:01,240 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 19:54:01,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:01,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093860929] [2022-11-02 19:54:01,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093860929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:01,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:01,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:54:01,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231593714] [2022-11-02 19:54:01,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:01,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:54:01,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:01,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:54:01,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:54:01,244 INFO L87 Difference]: Start difference. First operand 613 states and 952 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:01,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:01,372 INFO L93 Difference]: Finished difference Result 1641 states and 2578 transitions. [2022-11-02 19:54:01,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:54:01,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-02 19:54:01,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:01,380 INFO L225 Difference]: With dead ends: 1641 [2022-11-02 19:54:01,380 INFO L226 Difference]: Without dead ends: 1063 [2022-11-02 19:54:01,383 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 19:54:01,392 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 129 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 413 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 19:54:01,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 413 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:54:01,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2022-11-02 19:54:01,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1061. [2022-11-02 19:54:01,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1060 states have (on average 1.558490566037736) internal successors, (1652), 1060 states have internal predecessors, (1652), 0 states have call successors, (0), 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 19:54:01,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1652 transitions. [2022-11-02 19:54:01,511 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1652 transitions. Word has length 63 [2022-11-02 19:54:01,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:01,512 INFO L495 AbstractCegarLoop]: Abstraction has 1061 states and 1652 transitions. [2022-11-02 19:54:01,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:01,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1652 transitions. [2022-11-02 19:54:01,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 19:54:01,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:01,514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:01,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 19:54:01,514 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:01,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:01,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1925116710, now seen corresponding path program 1 times [2022-11-02 19:54:01,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:01,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359740138] [2022-11-02 19:54:01,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:01,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:01,609 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 19:54:01,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:01,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359740138] [2022-11-02 19:54:01,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359740138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:01,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:01,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:54:01,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248681241] [2022-11-02 19:54:01,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:01,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:54:01,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:01,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:54:01,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:54:01,616 INFO L87 Difference]: Start difference. First operand 1061 states and 1652 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:01,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:01,865 INFO L93 Difference]: Finished difference Result 2857 states and 4470 transitions. [2022-11-02 19:54:01,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:54:01,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-02 19:54:01,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:01,875 INFO L225 Difference]: With dead ends: 2857 [2022-11-02 19:54:01,875 INFO L226 Difference]: Without dead ends: 1831 [2022-11-02 19:54:01,877 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 19:54:01,877 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 124 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 398 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 19:54:01,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 398 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:54:01,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2022-11-02 19:54:02,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1829. [2022-11-02 19:54:02,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1828 states have (on average 1.5514223194748358) internal successors, (2836), 1828 states have internal predecessors, (2836), 0 states have call successors, (0), 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 19:54:02,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2836 transitions. [2022-11-02 19:54:02,103 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2836 transitions. Word has length 64 [2022-11-02 19:54:02,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:02,104 INFO L495 AbstractCegarLoop]: Abstraction has 1829 states and 2836 transitions. [2022-11-02 19:54:02,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:02,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2836 transitions. [2022-11-02 19:54:02,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 19:54:02,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:02,111 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:02,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 19:54:02,111 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:02,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:02,112 INFO L85 PathProgramCache]: Analyzing trace with hash 210559993, now seen corresponding path program 1 times [2022-11-02 19:54:02,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:02,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441806906] [2022-11-02 19:54:02,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:02,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:02,341 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 19:54:02,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:02,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441806906] [2022-11-02 19:54:02,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441806906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:02,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:02,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:54:02,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903336779] [2022-11-02 19:54:02,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:02,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:54:02,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:02,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:54:02,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:54:02,344 INFO L87 Difference]: Start difference. First operand 1829 states and 2836 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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 19:54:03,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:03,857 INFO L93 Difference]: Finished difference Result 12593 states and 19642 transitions. [2022-11-02 19:54:03,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:54:03,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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 19:54:03,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:03,897 INFO L225 Difference]: With dead ends: 12593 [2022-11-02 19:54:03,897 INFO L226 Difference]: Without dead ends: 10799 [2022-11-02 19:54:03,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 19:54:03,906 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 2059 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2059 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:03,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2059 Valid, 1257 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:54:03,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10799 states. [2022-11-02 19:54:04,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10799 to 3621. [2022-11-02 19:54:04,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3621 states, 3620 states have (on average 1.5392265193370165) internal successors, (5572), 3620 states have internal predecessors, (5572), 0 states have call successors, (0), 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 19:54:04,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 5572 transitions. [2022-11-02 19:54:04,532 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 5572 transitions. Word has length 65 [2022-11-02 19:54:04,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:04,533 INFO L495 AbstractCegarLoop]: Abstraction has 3621 states and 5572 transitions. [2022-11-02 19:54:04,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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 19:54:04,533 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 5572 transitions. [2022-11-02 19:54:04,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 19:54:04,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:04,534 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, 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 19:54:04,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 19:54:04,534 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:04,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:04,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2082031049, now seen corresponding path program 1 times [2022-11-02 19:54:04,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:04,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735971937] [2022-11-02 19:54:04,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:04,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:04,861 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 19:54:04,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:04,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735971937] [2022-11-02 19:54:04,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735971937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:04,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:04,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:54:04,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427043630] [2022-11-02 19:54:04,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:04,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:54:04,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:04,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:54:04,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:54:04,864 INFO L87 Difference]: Start difference. First operand 3621 states and 5572 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:07,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:07,706 INFO L93 Difference]: Finished difference Result 18831 states and 28777 transitions. [2022-11-02 19:54:07,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:54:07,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 19:54:07,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:07,767 INFO L225 Difference]: With dead ends: 18831 [2022-11-02 19:54:07,767 INFO L226 Difference]: Without dead ends: 15245 [2022-11-02 19:54:07,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:54:07,775 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 671 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:07,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 1292 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:54:07,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15245 states. [2022-11-02 19:54:10,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15245 to 15237. [2022-11-02 19:54:10,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15237 states, 15236 states have (on average 1.520871619847729) internal successors, (23172), 15236 states have internal predecessors, (23172), 0 states have call successors, (0), 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 19:54:10,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15237 states to 15237 states and 23172 transitions. [2022-11-02 19:54:10,381 INFO L78 Accepts]: Start accepts. Automaton has 15237 states and 23172 transitions. Word has length 66 [2022-11-02 19:54:10,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:10,381 INFO L495 AbstractCegarLoop]: Abstraction has 15237 states and 23172 transitions. [2022-11-02 19:54:10,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:54:10,382 INFO L276 IsEmpty]: Start isEmpty. Operand 15237 states and 23172 transitions. [2022-11-02 19:54:10,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 19:54:10,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:10,383 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, 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 19:54:10,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 19:54:10,383 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:10,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:10,384 INFO L85 PathProgramCache]: Analyzing trace with hash 254256256, now seen corresponding path program 1 times [2022-11-02 19:54:10,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:10,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101676282] [2022-11-02 19:54:10,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:10,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:10,517 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 19:54:10,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:10,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101676282] [2022-11-02 19:54:10,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101676282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:10,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:10,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:54:10,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625813045] [2022-11-02 19:54:10,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:10,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:54:10,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:10,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:54:10,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:54:10,520 INFO L87 Difference]: Start difference. First operand 15237 states and 23172 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 19:54:15,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:15,202 INFO L93 Difference]: Finished difference Result 42985 states and 65446 transitions. [2022-11-02 19:54:15,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:54:15,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-11-02 19:54:15,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:15,277 INFO L225 Difference]: With dead ends: 42985 [2022-11-02 19:54:15,277 INFO L226 Difference]: Without dead ends: 27783 [2022-11-02 19:54:15,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:54:15,297 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 827 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:15,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 212 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:54:15,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27783 states. [2022-11-02 19:54:19,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27783 to 27781. [2022-11-02 19:54:19,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27781 states, 27780 states have (on average 1.5125989920806335) internal successors, (42020), 27780 states have internal predecessors, (42020), 0 states have call successors, (0), 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 19:54:19,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27781 states to 27781 states and 42020 transitions. [2022-11-02 19:54:19,846 INFO L78 Accepts]: Start accepts. Automaton has 27781 states and 42020 transitions. Word has length 68 [2022-11-02 19:54:19,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:19,847 INFO L495 AbstractCegarLoop]: Abstraction has 27781 states and 42020 transitions. [2022-11-02 19:54:19,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 19:54:19,848 INFO L276 IsEmpty]: Start isEmpty. Operand 27781 states and 42020 transitions. [2022-11-02 19:54:19,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 19:54:19,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:19,849 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, 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 19:54:19,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 19:54:19,850 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:19,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:19,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1142699675, now seen corresponding path program 1 times [2022-11-02 19:54:19,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:19,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75759208] [2022-11-02 19:54:19,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:19,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:20,300 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 19:54:20,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:20,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75759208] [2022-11-02 19:54:20,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75759208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:20,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:20,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:54:20,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220898081] [2022-11-02 19:54:20,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:20,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:54:20,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:20,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:54:20,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:54:20,303 INFO L87 Difference]: Start difference. First operand 27781 states and 42020 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 19:54:29,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:29,444 INFO L93 Difference]: Finished difference Result 56679 states and 85157 transitions. [2022-11-02 19:54:29,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:54:29,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-11-02 19:54:29,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:29,586 INFO L225 Difference]: With dead ends: 56679 [2022-11-02 19:54:29,586 INFO L226 Difference]: Without dead ends: 56677 [2022-11-02 19:54:29,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:54:29,601 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 300 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:29,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 939 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:54:29,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56677 states. [2022-11-02 19:54:34,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56677 to 28933. [2022-11-02 19:54:34,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28933 states, 28932 states have (on average 1.4921885801188994) internal successors, (43172), 28932 states have internal predecessors, (43172), 0 states have call successors, (0), 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 19:54:34,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28933 states to 28933 states and 43172 transitions. [2022-11-02 19:54:34,680 INFO L78 Accepts]: Start accepts. Automaton has 28933 states and 43172 transitions. Word has length 68 [2022-11-02 19:54:34,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:34,681 INFO L495 AbstractCegarLoop]: Abstraction has 28933 states and 43172 transitions. [2022-11-02 19:54:34,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 19:54:34,681 INFO L276 IsEmpty]: Start isEmpty. Operand 28933 states and 43172 transitions. [2022-11-02 19:54:34,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-02 19:54:34,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:34,682 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, 1, 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 19:54:34,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 19:54:34,683 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:34,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:34,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1053378469, now seen corresponding path program 1 times [2022-11-02 19:54:34,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:34,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737512970] [2022-11-02 19:54:34,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:34,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:34,824 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 19:54:34,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:34,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737512970] [2022-11-02 19:54:34,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737512970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:34,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:34,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:54:34,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656528761] [2022-11-02 19:54:34,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:34,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:54:34,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:34,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:54:34,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:54:34,827 INFO L87 Difference]: Start difference. First operand 28933 states and 43172 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 19:54:40,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:40,610 INFO L93 Difference]: Finished difference Result 65147 states and 97016 transitions. [2022-11-02 19:54:40,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:54:40,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-11-02 19:54:40,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:40,700 INFO L225 Difference]: With dead ends: 65147 [2022-11-02 19:54:40,701 INFO L226 Difference]: Without dead ends: 36249 [2022-11-02 19:54:40,733 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 19:54:40,733 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 112 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:40,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 385 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:54:40,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36249 states.