./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label54.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_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/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_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label54.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/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_2d77b435-08c1-4729-9ef8-d452da81392a/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 49ff6ba228d081d26cec6b087caf15954318cb178107abc089cabcbe5599946d --- 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 21:12:27,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:12:27,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:12:27,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:12:27,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:12:27,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:12:27,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:12:27,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:12:27,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:12:27,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:12:27,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:12:27,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:12:27,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:12:27,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:12:27,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:12:27,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:12:27,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:12:27,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:12:27,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:12:27,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:12:27,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:12:27,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:12:27,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:12:27,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:12:27,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:12:27,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:12:27,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:12:27,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:12:27,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:12:27,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:12:27,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:12:27,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:12:27,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:12:27,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:12:27,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:12:27,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:12:27,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:12:27,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:12:27,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:12:27,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:12:27,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:12:27,479 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:12:27,511 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:12:27,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:12:27,512 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:12:27,512 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:12:27,513 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:12:27,514 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:12:27,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:12:27,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:12:27,515 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:12:27,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:12:27,515 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:12:27,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:12:27,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:12:27,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:12:27,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:12:27,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:12:27,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:12:27,517 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:12:27,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:12:27,517 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:12:27,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:12:27,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:12:27,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:12:27,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:12:27,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:12:27,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:12:27,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:12:27,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:12:27,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:12:27,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:12:27,520 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:12:27,520 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:12:27,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:12:27,520 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_2d77b435-08c1-4729-9ef8-d452da81392a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 49ff6ba228d081d26cec6b087caf15954318cb178107abc089cabcbe5599946d [2022-11-02 21:12:27,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:12:27,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:12:27,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:12:27,841 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:12:27,842 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:12:27,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/eca-rers2012/Problem13_label54.c [2022-11-02 21:12:27,923 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/data/6eb761555/4e48db9c96d04373908d00af17d1d845/FLAGe08618852 [2022-11-02 21:12:28,828 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:12:28,828 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/sv-benchmarks/c/eca-rers2012/Problem13_label54.c [2022-11-02 21:12:28,869 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/data/6eb761555/4e48db9c96d04373908d00af17d1d845/FLAGe08618852 [2022-11-02 21:12:29,315 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/data/6eb761555/4e48db9c96d04373908d00af17d1d845 [2022-11-02 21:12:29,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:12:29,323 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:12:29,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:12:29,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:12:29,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:12:29,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:12:29" (1/1) ... [2022-11-02 21:12:29,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48f2ad7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:29, skipping insertion in model container [2022-11-02 21:12:29,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:12:29" (1/1) ... [2022-11-02 21:12:29,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:12:29,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:12:29,875 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_2d77b435-08c1-4729-9ef8-d452da81392a/sv-benchmarks/c/eca-rers2012/Problem13_label54.c[4044,4057] [2022-11-02 21:12:31,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:12:31,057 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:12:31,093 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_2d77b435-08c1-4729-9ef8-d452da81392a/sv-benchmarks/c/eca-rers2012/Problem13_label54.c[4044,4057] [2022-11-02 21:12:31,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:12:31,800 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:12:31,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:31 WrapperNode [2022-11-02 21:12:31,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:12:31,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:12:31,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:12:31,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:12:31,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:31" (1/1) ... [2022-11-02 21:12:31,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:31" (1/1) ... [2022-11-02 21:12:32,571 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-11-02 21:12:32,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:12:32,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:12:32,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:12:32,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:12:32,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:31" (1/1) ... [2022-11-02 21:12:32,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:31" (1/1) ... [2022-11-02 21:12:32,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:31" (1/1) ... [2022-11-02 21:12:32,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:31" (1/1) ... [2022-11-02 21:12:33,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:31" (1/1) ... [2022-11-02 21:12:33,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:31" (1/1) ... [2022-11-02 21:12:33,338 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:31" (1/1) ... [2022-11-02 21:12:33,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:31" (1/1) ... [2022-11-02 21:12:33,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:12:33,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:12:33,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:12:33,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:12:33,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:31" (1/1) ... [2022-11-02 21:12:33,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:12:33,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:33,483 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:12:33,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:12:33,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:12:33,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:12:33,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:12:33,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:12:33,621 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:12:33,624 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:12:40,750 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:12:40,769 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:12:40,770 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:12:40,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:12:40 BoogieIcfgContainer [2022-11-02 21:12:40,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:12:40,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:12:40,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:12:40,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:12:40,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:12:29" (1/3) ... [2022-11-02 21:12:40,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218ea09a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:12:40, skipping insertion in model container [2022-11-02 21:12:40,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:31" (2/3) ... [2022-11-02 21:12:40,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218ea09a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:12:40, skipping insertion in model container [2022-11-02 21:12:40,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:12:40" (3/3) ... [2022-11-02 21:12:40,786 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label54.c [2022-11-02 21:12:40,806 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:12:40,806 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:12:40,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:12:40,914 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;@194df7cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:12:40,915 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:12:40,925 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 21:12:40,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 21:12:40,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:40,935 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] [2022-11-02 21:12:40,936 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:40,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:40,942 INFO L85 PathProgramCache]: Analyzing trace with hash -438767135, now seen corresponding path program 1 times [2022-11-02 21:12:40,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:40,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832277830] [2022-11-02 21:12:40,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:40,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:41,359 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 21:12:41,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:41,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832277830] [2022-11-02 21:12:41,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832277830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:41,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:41,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:12:41,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029433810] [2022-11-02 21:12:41,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:41,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:12:41,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:41,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:12:41,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:12:41,441 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 21:12:47,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:47,611 INFO L93 Difference]: Finished difference Result 3147 states and 5806 transitions. [2022-11-02 21:12:47,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:12:47,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2022-11-02 21:12:47,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:47,657 INFO L225 Difference]: With dead ends: 3147 [2022-11-02 21:12:47,657 INFO L226 Difference]: Without dead ends: 1964 [2022-11-02 21:12:47,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:12:47,673 INFO L413 NwaCegarLoop]: 764 mSDtfsCounter, 1152 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:47,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1152 Valid, 992 Invalid, 3298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-02 21:12:47,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2022-11-02 21:12:47,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1951. [2022-11-02 21:12:47,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1950 states have (on average 1.6538461538461537) internal successors, (3225), 1950 states have internal predecessors, (3225), 0 states have call successors, (0), 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 21:12:47,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 3225 transitions. [2022-11-02 21:12:47,829 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 3225 transitions. Word has length 27 [2022-11-02 21:12:47,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:47,830 INFO L495 AbstractCegarLoop]: Abstraction has 1951 states and 3225 transitions. [2022-11-02 21:12:47,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 21:12:47,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 3225 transitions. [2022-11-02 21:12:47,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:12:47,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:47,837 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:47,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:12:47,838 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:47,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:47,839 INFO L85 PathProgramCache]: Analyzing trace with hash 575451273, now seen corresponding path program 1 times [2022-11-02 21:12:47,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:47,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484779531] [2022-11-02 21:12:47,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:47,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:48,258 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:48,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:48,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484779531] [2022-11-02 21:12:48,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484779531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:48,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:48,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:12:48,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278506176] [2022-11-02 21:12:48,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:48,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:12:48,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:48,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:12:48,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:12:48,266 INFO L87 Difference]: Start difference. First operand 1951 states and 3225 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:12:54,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:54,203 INFO L93 Difference]: Finished difference Result 5542 states and 9222 transitions. [2022-11-02 21:12:54,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:12:54,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-02 21:12:54,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:54,219 INFO L225 Difference]: With dead ends: 5542 [2022-11-02 21:12:54,219 INFO L226 Difference]: Without dead ends: 3593 [2022-11-02 21:12:54,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:12:54,224 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 924 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 749 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 3341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 749 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:54,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 1009 Invalid, 3341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [749 Valid, 2592 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-02 21:12:54,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3593 states. [2022-11-02 21:12:54,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3593 to 3581. [2022-11-02 21:12:54,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3581 states, 3580 states have (on average 1.5050279329608938) internal successors, (5388), 3580 states have internal predecessors, (5388), 0 states have call successors, (0), 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 21:12:54,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3581 states to 3581 states and 5388 transitions. [2022-11-02 21:12:54,310 INFO L78 Accepts]: Start accepts. Automaton has 3581 states and 5388 transitions. Word has length 98 [2022-11-02 21:12:54,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:54,311 INFO L495 AbstractCegarLoop]: Abstraction has 3581 states and 5388 transitions. [2022-11-02 21:12:54,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 21:12:54,313 INFO L276 IsEmpty]: Start isEmpty. Operand 3581 states and 5388 transitions. [2022-11-02 21:12:54,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 21:12:54,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:54,323 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:54,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:12:54,327 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:54,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:54,328 INFO L85 PathProgramCache]: Analyzing trace with hash 228222636, now seen corresponding path program 1 times [2022-11-02 21:12:54,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:54,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927877221] [2022-11-02 21:12:54,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:54,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:54,580 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:54,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:54,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927877221] [2022-11-02 21:12:54,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927877221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:54,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:54,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:12:54,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667955933] [2022-11-02 21:12:54,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:54,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:12:54,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:54,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:12:54,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:12:54,584 INFO L87 Difference]: Start difference. First operand 3581 states and 5388 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:00,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:00,061 INFO L93 Difference]: Finished difference Result 10352 states and 15625 transitions. [2022-11-02 21:13:00,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:13:00,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-11-02 21:13:00,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:00,086 INFO L225 Difference]: With dead ends: 10352 [2022-11-02 21:13:00,086 INFO L226 Difference]: Without dead ends: 6773 [2022-11-02 21:13:00,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:13:00,092 INFO L413 NwaCegarLoop]: 1021 mSDtfsCounter, 785 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2491 mSolverCounterSat, 786 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 3277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 786 IncrementalHoareTripleChecker+Valid, 2491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:00,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 1172 Invalid, 3277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [786 Valid, 2491 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-02 21:13:00,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6773 states. [2022-11-02 21:13:00,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6773 to 6749. [2022-11-02 21:13:00,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6749 states, 6748 states have (on average 1.3252815649081209) internal successors, (8943), 6748 states have internal predecessors, (8943), 0 states have call successors, (0), 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 21:13:00,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6749 states to 6749 states and 8943 transitions. [2022-11-02 21:13:00,233 INFO L78 Accepts]: Start accepts. Automaton has 6749 states and 8943 transitions. Word has length 112 [2022-11-02 21:13:00,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:00,233 INFO L495 AbstractCegarLoop]: Abstraction has 6749 states and 8943 transitions. [2022-11-02 21:13:00,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:00,234 INFO L276 IsEmpty]: Start isEmpty. Operand 6749 states and 8943 transitions. [2022-11-02 21:13:00,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-02 21:13:00,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:00,245 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:00,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:13:00,246 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:13:00,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:00,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1558843312, now seen corresponding path program 1 times [2022-11-02 21:13:00,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:13:00,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125831074] [2022-11-02 21:13:00,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:00,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:13:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:00,585 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:00,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:13:00,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125831074] [2022-11-02 21:13:00,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125831074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:13:00,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:13:00,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:13:00,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651364060] [2022-11-02 21:13:00,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:13:00,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:13:00,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:13:00,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:13:00,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:13:00,588 INFO L87 Difference]: Start difference. First operand 6749 states and 8943 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 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 21:13:05,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:05,186 INFO L93 Difference]: Finished difference Result 19804 states and 26220 transitions. [2022-11-02 21:13:05,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:13:05,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2022-11-02 21:13:05,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:05,237 INFO L225 Difference]: With dead ends: 19804 [2022-11-02 21:13:05,237 INFO L226 Difference]: Without dead ends: 13057 [2022-11-02 21:13:05,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:13:05,248 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 865 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 875 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 3205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 875 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:05,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1035 Invalid, 3205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [875 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-02 21:13:05,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13057 states. [2022-11-02 21:13:05,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13057 to 13052. [2022-11-02 21:13:05,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13052 states, 13051 states have (on average 1.217914336066202) internal successors, (15895), 13051 states have internal predecessors, (15895), 0 states have call successors, (0), 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 21:13:05,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13052 states to 13052 states and 15895 transitions. [2022-11-02 21:13:05,539 INFO L78 Accepts]: Start accepts. Automaton has 13052 states and 15895 transitions. Word has length 141 [2022-11-02 21:13:05,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:05,541 INFO L495 AbstractCegarLoop]: Abstraction has 13052 states and 15895 transitions. [2022-11-02 21:13:05,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 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 21:13:05,542 INFO L276 IsEmpty]: Start isEmpty. Operand 13052 states and 15895 transitions. [2022-11-02 21:13:05,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-02 21:13:05,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:05,546 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:05,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:13:05,547 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:13:05,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:05,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1789674140, now seen corresponding path program 1 times [2022-11-02 21:13:05,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:13:05,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977995410] [2022-11-02 21:13:05,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:05,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:13:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:06,277 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 21:13:06,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:13:06,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977995410] [2022-11-02 21:13:06,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977995410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:13:06,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:13:06,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:13:06,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631928903] [2022-11-02 21:13:06,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:13:06,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:13:06,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:13:06,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:13:06,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:13:06,283 INFO L87 Difference]: Start difference. First operand 13052 states and 15895 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 21:13:10,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:10,532 INFO L93 Difference]: Finished difference Result 26889 states and 32590 transitions. [2022-11-02 21:13:10,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:13:10,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 219 [2022-11-02 21:13:10,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:10,562 INFO L225 Difference]: With dead ends: 26889 [2022-11-02 21:13:10,562 INFO L226 Difference]: Without dead ends: 13839 [2022-11-02 21:13:10,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:13:10,575 INFO L413 NwaCegarLoop]: 1084 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:10,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1213 Invalid, 2530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-02 21:13:10,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13839 states. [2022-11-02 21:13:10,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13839 to 13839. [2022-11-02 21:13:10,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13839 states, 13838 states have (on average 1.2058823529411764) internal successors, (16687), 13838 states have internal predecessors, (16687), 0 states have call successors, (0), 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 21:13:10,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13839 states to 13839 states and 16687 transitions. [2022-11-02 21:13:10,832 INFO L78 Accepts]: Start accepts. Automaton has 13839 states and 16687 transitions. Word has length 219 [2022-11-02 21:13:10,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:10,834 INFO L495 AbstractCegarLoop]: Abstraction has 13839 states and 16687 transitions. [2022-11-02 21:13:10,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 21:13:10,838 INFO L276 IsEmpty]: Start isEmpty. Operand 13839 states and 16687 transitions. [2022-11-02 21:13:10,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-11-02 21:13:10,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:10,842 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:10,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:13:10,843 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:13:10,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:10,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1420967643, now seen corresponding path program 1 times [2022-11-02 21:13:10,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:13:10,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570943640] [2022-11-02 21:13:10,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:10,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:13:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:11,103 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:11,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:13:11,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570943640] [2022-11-02 21:13:11,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570943640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:13:11,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:13:11,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:13:11,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872248819] [2022-11-02 21:13:11,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:13:11,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:13:11,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:13:11,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:13:11,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:13:11,107 INFO L87 Difference]: Start difference. First operand 13839 states and 16687 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 21:13:16,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:16,352 INFO L93 Difference]: Finished difference Result 33200 states and 41058 transitions. [2022-11-02 21:13:16,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:13:16,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 226 [2022-11-02 21:13:16,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:16,393 INFO L225 Difference]: With dead ends: 33200 [2022-11-02 21:13:16,393 INFO L226 Difference]: Without dead ends: 20150 [2022-11-02 21:13:16,405 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 21:13:16,406 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 861 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2388 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 3306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 2388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:16,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 943 Invalid, 3306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 2388 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-02 21:13:16,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20150 states. [2022-11-02 21:13:16,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20150 to 20140. [2022-11-02 21:13:16,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20140 states, 20139 states have (on average 1.1898803316947217) internal successors, (23963), 20139 states have internal predecessors, (23963), 0 states have call successors, (0), 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 21:13:16,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20140 states to 20140 states and 23963 transitions. [2022-11-02 21:13:16,786 INFO L78 Accepts]: Start accepts. Automaton has 20140 states and 23963 transitions. Word has length 226 [2022-11-02 21:13:16,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:16,787 INFO L495 AbstractCegarLoop]: Abstraction has 20140 states and 23963 transitions. [2022-11-02 21:13:16,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 21:13:16,787 INFO L276 IsEmpty]: Start isEmpty. Operand 20140 states and 23963 transitions. [2022-11-02 21:13:16,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-02 21:13:16,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:16,791 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:16,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:13:16,792 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:13:16,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:16,792 INFO L85 PathProgramCache]: Analyzing trace with hash -206220480, now seen corresponding path program 1 times [2022-11-02 21:13:16,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:13:16,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888367307] [2022-11-02 21:13:16,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:16,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:13:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:16,987 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:16,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:13:16,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888367307] [2022-11-02 21:13:16,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888367307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:13:16,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:13:16,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:13:16,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608543268] [2022-11-02 21:13:16,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:13:16,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:13:16,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:13:16,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:13:16,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:13:16,990 INFO L87 Difference]: Start difference. First operand 20140 states and 23963 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 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 21:13:21,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:21,656 INFO L93 Difference]: Finished difference Result 39361 states and 46953 transitions. [2022-11-02 21:13:21,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:13:21,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 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 241 [2022-11-02 21:13:21,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:21,699 INFO L225 Difference]: With dead ends: 39361 [2022-11-02 21:13:21,699 INFO L226 Difference]: Without dead ends: 20010 [2022-11-02 21:13:21,716 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 21:13:21,717 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 1037 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2350 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 2952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 2350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:21,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 1642 Invalid, 2952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 2350 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-02 21:13:21,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20010 states. [2022-11-02 21:13:21,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20010 to 19220. [2022-11-02 21:13:21,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19220 states, 19219 states have (on average 1.1321608824600655) internal successors, (21759), 19219 states have internal predecessors, (21759), 0 states have call successors, (0), 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 21:13:22,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19220 states to 19220 states and 21759 transitions. [2022-11-02 21:13:22,230 INFO L78 Accepts]: Start accepts. Automaton has 19220 states and 21759 transitions. Word has length 241 [2022-11-02 21:13:22,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:22,231 INFO L495 AbstractCegarLoop]: Abstraction has 19220 states and 21759 transitions. [2022-11-02 21:13:22,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 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 21:13:22,232 INFO L276 IsEmpty]: Start isEmpty. Operand 19220 states and 21759 transitions. [2022-11-02 21:13:22,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-11-02 21:13:22,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:22,240 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:22,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:13:22,240 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:13:22,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:22,242 INFO L85 PathProgramCache]: Analyzing trace with hash 113626786, now seen corresponding path program 1 times [2022-11-02 21:13:22,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:13:22,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850894361] [2022-11-02 21:13:22,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:22,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:13:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:22,615 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-02 21:13:22,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:13:22,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850894361] [2022-11-02 21:13:22,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850894361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:13:22,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:13:22,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:13:22,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164166610] [2022-11-02 21:13:22,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:13:22,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:13:22,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:13:22,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:13:22,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:13:22,619 INFO L87 Difference]: Start difference. First operand 19220 states and 21759 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 21:13:28,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:28,291 INFO L93 Difference]: Finished difference Result 43955 states and 50452 transitions. [2022-11-02 21:13:28,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:13:28,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 315 [2022-11-02 21:13:28,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:28,330 INFO L225 Difference]: With dead ends: 43955 [2022-11-02 21:13:28,330 INFO L226 Difference]: Without dead ends: 25524 [2022-11-02 21:13:28,345 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 21:13:28,346 INFO L413 NwaCegarLoop]: 1777 mSDtfsCounter, 841 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 3252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 721 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:28,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1919 Invalid, 3252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [721 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-02 21:13:28,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25524 states. [2022-11-02 21:13:28,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25524 to 24733. [2022-11-02 21:13:28,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24733 states, 24732 states have (on average 1.118591298722303) internal successors, (27665), 24732 states have internal predecessors, (27665), 0 states have call successors, (0), 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 21:13:28,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24733 states to 24733 states and 27665 transitions. [2022-11-02 21:13:28,869 INFO L78 Accepts]: Start accepts. Automaton has 24733 states and 27665 transitions. Word has length 315 [2022-11-02 21:13:28,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:28,870 INFO L495 AbstractCegarLoop]: Abstraction has 24733 states and 27665 transitions. [2022-11-02 21:13:28,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 21:13:28,870 INFO L276 IsEmpty]: Start isEmpty. Operand 24733 states and 27665 transitions. [2022-11-02 21:13:28,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-11-02 21:13:28,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:28,879 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:28,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:13:28,879 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:13:28,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:28,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1008172382, now seen corresponding path program 1 times [2022-11-02 21:13:28,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:13:28,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976700482] [2022-11-02 21:13:28,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:28,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:13:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:29,273 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 21:13:29,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:13:29,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976700482] [2022-11-02 21:13:29,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976700482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:13:29,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:13:29,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:13:29,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616278775] [2022-11-02 21:13:29,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:13:29,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:13:29,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:13:29,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:13:29,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:13:29,278 INFO L87 Difference]: Start difference. First operand 24733 states and 27665 transitions. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 21:13:39,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:39,476 INFO L93 Difference]: Finished difference Result 91376 states and 102287 transitions. [2022-11-02 21:13:39,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:13:39,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 324 [2022-11-02 21:13:39,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:39,555 INFO L225 Difference]: With dead ends: 91376 [2022-11-02 21:13:39,555 INFO L226 Difference]: Without dead ends: 67432 [2022-11-02 21:13:39,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:13:39,577 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 1719 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 6001 mSolverCounterSat, 1099 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 7100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1099 IncrementalHoareTripleChecker+Valid, 6001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:39,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1719 Valid, 764 Invalid, 7100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1099 Valid, 6001 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-11-02 21:13:39,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67432 states. [2022-11-02 21:13:40,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67432 to 64949. [2022-11-02 21:13:40,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64949 states, 64948 states have (on average 1.1045605715341504) internal successors, (71739), 64948 states have internal predecessors, (71739), 0 states have call successors, (0), 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 21:13:40,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64949 states to 64949 states and 71739 transitions. [2022-11-02 21:13:40,660 INFO L78 Accepts]: Start accepts. Automaton has 64949 states and 71739 transitions. Word has length 324 [2022-11-02 21:13:40,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:40,661 INFO L495 AbstractCegarLoop]: Abstraction has 64949 states and 71739 transitions. [2022-11-02 21:13:40,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 21:13:40,662 INFO L276 IsEmpty]: Start isEmpty. Operand 64949 states and 71739 transitions. [2022-11-02 21:13:40,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-11-02 21:13:40,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:40,670 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:40,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:13:40,671 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:13:40,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:40,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1249030675, now seen corresponding path program 1 times [2022-11-02 21:13:40,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:13:40,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293409082] [2022-11-02 21:13:40,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:40,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:13:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-02 21:13:41,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:13:41,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293409082] [2022-11-02 21:13:41,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293409082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:13:41,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:13:41,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:13:41,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223656661] [2022-11-02 21:13:41,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:13:41,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:13:41,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:13:41,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:13:41,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:13:41,235 INFO L87 Difference]: Start difference. First operand 64949 states and 71739 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 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 21:13:47,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:47,258 INFO L93 Difference]: Finished difference Result 142510 states and 156966 transitions. [2022-11-02 21:13:47,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:13:47,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 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 324 [2022-11-02 21:13:47,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:47,340 INFO L225 Difference]: With dead ends: 142510 [2022-11-02 21:13:47,340 INFO L226 Difference]: Without dead ends: 77563 [2022-11-02 21:13:47,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:13:47,385 INFO L413 NwaCegarLoop]: 1000 mSDtfsCounter, 728 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 2689 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 2869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:47,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1175 Invalid, 2869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2689 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-02 21:13:47,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77563 states. [2022-11-02 21:13:48,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77563 to 75978. [2022-11-02 21:13:48,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75978 states, 75977 states have (on average 1.0951472156047224) internal successors, (83206), 75977 states have internal predecessors, (83206), 0 states have call successors, (0), 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 21:13:48,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75978 states to 75978 states and 83206 transitions. [2022-11-02 21:13:48,545 INFO L78 Accepts]: Start accepts. Automaton has 75978 states and 83206 transitions. Word has length 324 [2022-11-02 21:13:48,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:48,545 INFO L495 AbstractCegarLoop]: Abstraction has 75978 states and 83206 transitions. [2022-11-02 21:13:48,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 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 21:13:48,546 INFO L276 IsEmpty]: Start isEmpty. Operand 75978 states and 83206 transitions. [2022-11-02 21:13:48,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-11-02 21:13:48,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:48,556 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:48,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:13:48,557 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:13:48,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:48,557 INFO L85 PathProgramCache]: Analyzing trace with hash -152484837, now seen corresponding path program 1 times [2022-11-02 21:13:48,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:13:48,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460282621] [2022-11-02 21:13:48,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:48,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:13:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:51,247 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 218 proven. 113 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 21:13:51,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:13:51,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460282621] [2022-11-02 21:13:51,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460282621] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:13:51,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791831547] [2022-11-02 21:13:51,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:51,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:13:51,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:13:51,252 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:13:51,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:13:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:51,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:13:51,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:13:51,807 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-02 21:13:51,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:13:51,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791831547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:13:51,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:13:51,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-02 21:13:51,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549720592] [2022-11-02 21:13:51,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:13:51,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:13:51,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:13:51,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:13:51,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:13:51,810 INFO L87 Difference]: Start difference. First operand 75978 states and 83206 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 21:13:56,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:56,947 INFO L93 Difference]: Finished difference Result 151165 states and 165617 transitions. [2022-11-02 21:13:56,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:13:56,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 353 [2022-11-02 21:13:56,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:57,024 INFO L225 Difference]: With dead ends: 151165 [2022-11-02 21:13:57,025 INFO L226 Difference]: Without dead ends: 75976 [2022-11-02 21:13:57,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:13:57,056 INFO L413 NwaCegarLoop]: 1341 mSDtfsCounter, 1112 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:57,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 1420 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-02 21:13:57,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75976 states. [2022-11-02 21:13:58,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75976 to 75975. [2022-11-02 21:13:58,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75975 states, 75974 states have (on average 1.0758680601258326) internal successors, (81738), 75974 states have internal predecessors, (81738), 0 states have call successors, (0), 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 21:13:58,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75975 states to 75975 states and 81738 transitions. [2022-11-02 21:13:58,248 INFO L78 Accepts]: Start accepts. Automaton has 75975 states and 81738 transitions. Word has length 353 [2022-11-02 21:13:58,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:58,250 INFO L495 AbstractCegarLoop]: Abstraction has 75975 states and 81738 transitions. [2022-11-02 21:13:58,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 21:13:58,250 INFO L276 IsEmpty]: Start isEmpty. Operand 75975 states and 81738 transitions. [2022-11-02 21:13:58,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-11-02 21:13:58,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:58,263 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:58,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:13:58,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:13:58,486 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:13:58,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:58,486 INFO L85 PathProgramCache]: Analyzing trace with hash -2109393606, now seen corresponding path program 1 times [2022-11-02 21:13:58,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:13:58,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540233599] [2022-11-02 21:13:58,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:58,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:13:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:59,318 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 428 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-02 21:13:59,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:13:59,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540233599] [2022-11-02 21:13:59,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540233599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:13:59,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:13:59,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:13:59,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289534324] [2022-11-02 21:13:59,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:13:59,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:13:59,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:13:59,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:13:59,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:13:59,322 INFO L87 Difference]: Start difference. First operand 75975 states and 81738 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 21:14:05,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:14:05,351 INFO L93 Difference]: Finished difference Result 171631 states and 185876 transitions. [2022-11-02 21:14:05,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:14:05,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 383 [2022-11-02 21:14:05,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:14:05,481 INFO L225 Difference]: With dead ends: 171631 [2022-11-02 21:14:05,481 INFO L226 Difference]: Without dead ends: 96445 [2022-11-02 21:14:05,508 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 21:14:05,509 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 891 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 934 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 3346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 934 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:14:05,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 881 Invalid, 3346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [934 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-02 21:14:05,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96445 states. [2022-11-02 21:14:06,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96445 to 93279. [2022-11-02 21:14:06,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93279 states, 93278 states have (on average 1.08082291644332) internal successors, (100817), 93278 states have internal predecessors, (100817), 0 states have call successors, (0), 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 21:14:07,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93279 states to 93279 states and 100817 transitions. [2022-11-02 21:14:07,162 INFO L78 Accepts]: Start accepts. Automaton has 93279 states and 100817 transitions. Word has length 383 [2022-11-02 21:14:07,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:14:07,163 INFO L495 AbstractCegarLoop]: Abstraction has 93279 states and 100817 transitions. [2022-11-02 21:14:07,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 21:14:07,163 INFO L276 IsEmpty]: Start isEmpty. Operand 93279 states and 100817 transitions. [2022-11-02 21:14:07,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-11-02 21:14:07,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:14:07,194 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:14:07,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 21:14:07,195 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:14:07,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:14:07,196 INFO L85 PathProgramCache]: Analyzing trace with hash 66240533, now seen corresponding path program 1 times [2022-11-02 21:14:07,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:14:07,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863529683] [2022-11-02 21:14:07,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:14:07,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:14:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:14:07,631 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-02 21:14:07,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:14:07,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863529683] [2022-11-02 21:14:07,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863529683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:14:07,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:14:07,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:14:07,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280212433] [2022-11-02 21:14:07,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:14:07,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:14:07,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:14:07,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:14:07,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:14:07,635 INFO L87 Difference]: Start difference. First operand 93279 states and 100817 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 21:14:13,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:14:13,211 INFO L93 Difference]: Finished difference Result 185777 states and 200858 transitions. [2022-11-02 21:14:13,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:14:13,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 421 [2022-11-02 21:14:13,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:14:13,334 INFO L225 Difference]: With dead ends: 185777 [2022-11-02 21:14:13,334 INFO L226 Difference]: Without dead ends: 93287 [2022-11-02 21:14:13,378 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 21:14:13,379 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 794 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 679 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 3173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 679 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:14:13,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1841 Invalid, 3173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [679 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-02 21:14:13,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93287 states. [2022-11-02 21:14:14,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93287 to 92482. [2022-11-02 21:14:14,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92482 states, 92481 states have (on average 1.0581200462797764) internal successors, (97856), 92481 states have internal predecessors, (97856), 0 states have call successors, (0), 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 21:14:14,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92482 states to 92482 states and 97856 transitions. [2022-11-02 21:14:14,720 INFO L78 Accepts]: Start accepts. Automaton has 92482 states and 97856 transitions. Word has length 421 [2022-11-02 21:14:14,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:14:14,721 INFO L495 AbstractCegarLoop]: Abstraction has 92482 states and 97856 transitions. [2022-11-02 21:14:14,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 21:14:14,722 INFO L276 IsEmpty]: Start isEmpty. Operand 92482 states and 97856 transitions. [2022-11-02 21:14:14,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2022-11-02 21:14:14,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:14:14,733 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:14:14,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 21:14:14,733 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:14:14,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:14:14,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1419491106, now seen corresponding path program 1 times [2022-11-02 21:14:14,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:14:14,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773418747] [2022-11-02 21:14:14,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:14:14,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:14:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:14:17,154 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 287 proven. 113 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 21:14:17,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:14:17,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773418747] [2022-11-02 21:14:17,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773418747] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:14:17,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766788170] [2022-11-02 21:14:17,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:14:17,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:14:17,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:14:17,156 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:14:17,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:14:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:14:17,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:14:17,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:14:17,808 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-02 21:14:17,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:14:17,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766788170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:14:17,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:14:17,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-02 21:14:17,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753844783] [2022-11-02 21:14:17,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:14:17,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:14:17,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:14:17,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:14:17,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:14:17,817 INFO L87 Difference]: Start difference. First operand 92482 states and 97856 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 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 21:14:22,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:14:22,552 INFO L93 Difference]: Finished difference Result 180995 states and 192682 transitions. [2022-11-02 21:14:22,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:14:22,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 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 457 [2022-11-02 21:14:22,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:14:22,690 INFO L225 Difference]: With dead ends: 180995 [2022-11-02 21:14:22,690 INFO L226 Difference]: Without dead ends: 102688 [2022-11-02 21:14:22,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:14:22,720 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1128 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2257 mSolverCounterSat, 799 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 3056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 799 IncrementalHoareTripleChecker+Valid, 2257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:14:22,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 367 Invalid, 3056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [799 Valid, 2257 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-02 21:14:22,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102688 states. [2022-11-02 21:14:24,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102688 to 102688. [2022-11-02 21:14:24,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102688 states, 102687 states have (on average 1.0576022281301432) internal successors, (108602), 102687 states have internal predecessors, (108602), 0 states have call successors, (0), 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 21:14:24,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102688 states to 102688 states and 108602 transitions. [2022-11-02 21:14:24,208 INFO L78 Accepts]: Start accepts. Automaton has 102688 states and 108602 transitions. Word has length 457 [2022-11-02 21:14:24,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:14:24,208 INFO L495 AbstractCegarLoop]: Abstraction has 102688 states and 108602 transitions. [2022-11-02 21:14:24,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 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 21:14:24,209 INFO L276 IsEmpty]: Start isEmpty. Operand 102688 states and 108602 transitions. [2022-11-02 21:14:24,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2022-11-02 21:14:24,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:14:24,220 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:14:24,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-02 21:14:24,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-02 21:14:24,435 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:14:24,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:14:24,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1347184657, now seen corresponding path program 1 times [2022-11-02 21:14:24,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:14:24,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545147131] [2022-11-02 21:14:24,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:14:24,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:14:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:14:26,573 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 287 proven. 113 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 21:14:26,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:14:26,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545147131] [2022-11-02 21:14:26,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545147131] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:14:26,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796309298] [2022-11-02 21:14:26,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:14:26,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:14:26,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:14:26,576 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:14:26,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:14:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:14:26,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:14:26,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:14:27,679 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 287 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-02 21:14:27,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:14:27,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796309298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:14:27,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:14:27,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-02 21:14:27,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822118866] [2022-11-02 21:14:27,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:14:27,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:14:27,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:14:27,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:14:27,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:14:27,683 INFO L87 Difference]: Start difference. First operand 102688 states and 108602 transitions. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 2 states have internal predecessors, (337), 0 states have call successors, (0), 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 21:14:32,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:14:32,386 INFO L93 Difference]: Finished difference Result 195936 states and 207583 transitions. [2022-11-02 21:14:32,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:14:32,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 2 states have internal predecessors, (337), 0 states have call successors, (0), 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 473 [2022-11-02 21:14:32,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:14:32,497 INFO L225 Difference]: With dead ends: 195936 [2022-11-02 21:14:32,497 INFO L226 Difference]: Without dead ends: 105846 [2022-11-02 21:14:32,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:14:32,525 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 680 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2431 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 2539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:14:32,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1121 Invalid, 2539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2431 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-02 21:14:32,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105846 states. [2022-11-02 21:14:33,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105846 to 105837. [2022-11-02 21:14:33,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105837 states, 105836 states have (on average 1.051787671491742) internal successors, (111317), 105836 states have internal predecessors, (111317), 0 states have call successors, (0), 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 21:14:34,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105837 states to 105837 states and 111317 transitions. [2022-11-02 21:14:34,268 INFO L78 Accepts]: Start accepts. Automaton has 105837 states and 111317 transitions. Word has length 473 [2022-11-02 21:14:34,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:14:34,269 INFO L495 AbstractCegarLoop]: Abstraction has 105837 states and 111317 transitions. [2022-11-02 21:14:34,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 2 states have internal predecessors, (337), 0 states have call successors, (0), 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 21:14:34,269 INFO L276 IsEmpty]: Start isEmpty. Operand 105837 states and 111317 transitions. [2022-11-02 21:14:34,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2022-11-02 21:14:34,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:14:34,278 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:14:34,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:14:34,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d77b435-08c1-4729-9ef8-d452da81392a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 21:14:34,487 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:14:34,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:14:34,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1426219641, now seen corresponding path program 1 times [2022-11-02 21:14:34,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:14:34,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377845634] [2022-11-02 21:14:34,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:14:34,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:14:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:14:34,851 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2022-11-02 21:14:34,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:14:34,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377845634] [2022-11-02 21:14:34,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377845634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:14:34,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:14:34,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:14:34,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153317851] [2022-11-02 21:14:34,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:14:34,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:14:34,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:14:34,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:14:34,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:14:34,855 INFO L87 Difference]: Start difference. First operand 105837 states and 111317 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 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 21:14:38,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:14:38,225 INFO L93 Difference]: Finished difference Result 196696 states and 207202 transitions. [2022-11-02 21:14:38,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:14:38,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 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 512 [2022-11-02 21:14:38,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:14:38,346 INFO L225 Difference]: With dead ends: 196696 [2022-11-02 21:14:38,347 INFO L226 Difference]: Without dead ends: 105034 [2022-11-02 21:14:38,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:14:38,382 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 1558 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:14:38,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 275 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-02 21:14:38,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105034 states. [2022-11-02 21:14:39,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105034 to 105033. [2022-11-02 21:14:39,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105033 states, 105032 states have (on average 1.0504893746667683) internal successors, (110335), 105032 states have internal predecessors, (110335), 0 states have call successors, (0), 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 21:14:40,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105033 states to 105033 states and 110335 transitions. [2022-11-02 21:14:40,059 INFO L78 Accepts]: Start accepts. Automaton has 105033 states and 110335 transitions. Word has length 512 [2022-11-02 21:14:40,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:14:40,059 INFO L495 AbstractCegarLoop]: Abstraction has 105033 states and 110335 transitions. [2022-11-02 21:14:40,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 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 21:14:40,060 INFO L276 IsEmpty]: Start isEmpty. Operand 105033 states and 110335 transitions. [2022-11-02 21:14:40,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2022-11-02 21:14:40,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:14:40,073 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:14:40,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 21:14:40,073 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:14:40,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:14:40,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1193820110, now seen corresponding path program 1 times [2022-11-02 21:14:40,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:14:40,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672592517] [2022-11-02 21:14:40,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:14:40,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:14:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:14:41,322 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 412 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-02 21:14:41,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:14:41,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672592517] [2022-11-02 21:14:41,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672592517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:14:41,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:14:41,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:14:41,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344426712] [2022-11-02 21:14:41,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:14:41,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:14:41,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:14:41,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:14:41,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:14:41,326 INFO L87 Difference]: Start difference. First operand 105033 states and 110335 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 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 21:14:45,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:14:45,762 INFO L93 Difference]: Finished difference Result 196682 states and 207037 transitions. [2022-11-02 21:14:45,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:14:45,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 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 526 [2022-11-02 21:14:45,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:14:45,897 INFO L225 Difference]: With dead ends: 196682 [2022-11-02 21:14:45,897 INFO L226 Difference]: Without dead ends: 105824 [2022-11-02 21:14:45,927 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 21:14:45,928 INFO L413 NwaCegarLoop]: 1704 mSDtfsCounter, 609 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 2432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:14:45,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 1828 Invalid, 2432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-02 21:14:46,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105824 states. [2022-11-02 21:14:47,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105824 to 105821. [2022-11-02 21:14:47,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105821 states, 105820 states have (on average 1.0503685503685503) internal successors, (111150), 105820 states have internal predecessors, (111150), 0 states have call successors, (0), 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 21:14:47,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105821 states to 105821 states and 111150 transitions. [2022-11-02 21:14:47,232 INFO L78 Accepts]: Start accepts. Automaton has 105821 states and 111150 transitions. Word has length 526 [2022-11-02 21:14:47,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:14:47,233 INFO L495 AbstractCegarLoop]: Abstraction has 105821 states and 111150 transitions. [2022-11-02 21:14:47,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 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 21:14:47,233 INFO L276 IsEmpty]: Start isEmpty. Operand 105821 states and 111150 transitions. [2022-11-02 21:14:47,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2022-11-02 21:14:47,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:14:47,251 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:14:47,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 21:14:47,251 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:14:47,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:14:47,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1535643174, now seen corresponding path program 1 times [2022-11-02 21:14:47,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:14:47,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657708416] [2022-11-02 21:14:47,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:14:47,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:14:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:14:48,266 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 623 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-11-02 21:14:48,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:14:48,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657708416] [2022-11-02 21:14:48,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657708416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:14:48,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:14:48,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:14:48,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20964976] [2022-11-02 21:14:48,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:14:48,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:14:48,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:14:48,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:14:48,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:14:48,269 INFO L87 Difference]: Start difference. First operand 105821 states and 111150 transitions. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 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 21:14:53,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:14:53,963 INFO L93 Difference]: Finished difference Result 233707 states and 246460 transitions. [2022-11-02 21:14:53,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:14:53,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 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 557 [2022-11-02 21:14:53,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:14:54,134 INFO L225 Difference]: With dead ends: 233707 [2022-11-02 21:14:54,134 INFO L226 Difference]: Without dead ends: 142061 [2022-11-02 21:14:54,184 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 21:14:54,184 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 949 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 852 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 3252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 852 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:14:54,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 661 Invalid, 3252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [852 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-02 21:14:54,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142061 states. [2022-11-02 21:14:55,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142061 to 142057. [2022-11-02 21:14:56,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142057 states, 142056 states have (on average 1.04936785493045) internal successors, (149069), 142056 states have internal predecessors, (149069), 0 states have call successors, (0), 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 21:14:56,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142057 states to 142057 states and 149069 transitions. [2022-11-02 21:14:56,181 INFO L78 Accepts]: Start accepts. Automaton has 142057 states and 149069 transitions. Word has length 557 [2022-11-02 21:14:56,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:14:56,181 INFO L495 AbstractCegarLoop]: Abstraction has 142057 states and 149069 transitions. [2022-11-02 21:14:56,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 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 21:14:56,182 INFO L276 IsEmpty]: Start isEmpty. Operand 142057 states and 149069 transitions. [2022-11-02 21:14:56,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2022-11-02 21:14:56,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:14:56,195 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:14:56,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 21:14:56,195 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:14:56,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:14:56,196 INFO L85 PathProgramCache]: Analyzing trace with hash -2008151319, now seen corresponding path program 1 times [2022-11-02 21:14:56,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:14:56,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083756475] [2022-11-02 21:14:56,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:14:56,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:14:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:14:56,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1016 backedges. 794 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-11-02 21:14:56,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:14:56,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083756475] [2022-11-02 21:14:56,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083756475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:14:56,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:14:56,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:14:56,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774842426] [2022-11-02 21:14:56,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:14:56,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:14:56,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:14:56,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:14:56,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:14:56,545 INFO L87 Difference]: Start difference. First operand 142057 states and 149069 transitions. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)