./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i --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_9ff833f8-a435-466d-a0a0-acbf76b8ca30/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff833f8-a435-466d-a0a0-acbf76b8ca30/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_9ff833f8-a435-466d-a0a0-acbf76b8ca30/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff833f8-a435-466d-a0a0-acbf76b8ca30/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff833f8-a435-466d-a0a0-acbf76b8ca30/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_9ff833f8-a435-466d-a0a0-acbf76b8ca30/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 cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 --- 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 21:12:07,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:12:07,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:12:07,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:12:07,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:12:07,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:12:07,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:12:07,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:12:07,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:12:07,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:12:07,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:12:07,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:12:07,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:12:07,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:12:07,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:12:07,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:12:07,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:12:07,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:12:07,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:12:07,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:12:07,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:12:07,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:12:07,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:12:07,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:12:07,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:12:07,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:12:07,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:12:07,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:12:07,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:12:07,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:12:07,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:12:07,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:12:07,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:12:07,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:12:07,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:12:07,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:12:07,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:12:07,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:12:07,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:12:07,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:12:07,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:12:07,363 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff833f8-a435-466d-a0a0-acbf76b8ca30/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:12:07,408 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:12:07,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:12:07,409 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:12:07,409 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:12:07,410 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:12:07,411 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:12:07,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:12:07,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:12:07,412 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:12:07,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:12:07,413 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:12:07,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:12:07,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:12:07,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:12:07,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:12:07,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:12:07,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:12:07,415 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:12:07,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:12:07,415 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:12:07,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:12:07,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:12:07,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:12:07,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:12:07,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:12:07,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:12:07,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:12:07,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:12:07,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:12:07,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:12:07,418 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:12:07,418 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:12:07,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:12:07,419 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_9ff833f8-a435-466d-a0a0-acbf76b8ca30/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff833f8-a435-466d-a0a0-acbf76b8ca30/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 [2022-11-02 21:12:07,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:12:07,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:12:07,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:12:07,789 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:12:07,790 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:12:07,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff833f8-a435-466d-a0a0-acbf76b8ca30/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2022-11-02 21:12:07,883 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff833f8-a435-466d-a0a0-acbf76b8ca30/bin/uautomizer-Dbtcem3rbc/data/c94767292/c6fc1a3e00ce4c378b9a5d113bf9a1e8/FLAG5f372ddd7 [2022-11-02 21:12:08,520 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:12:08,521 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff833f8-a435-466d-a0a0-acbf76b8ca30/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2022-11-02 21:12:08,549 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff833f8-a435-466d-a0a0-acbf76b8ca30/bin/uautomizer-Dbtcem3rbc/data/c94767292/c6fc1a3e00ce4c378b9a5d113bf9a1e8/FLAG5f372ddd7 [2022-11-02 21:12:08,797 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff833f8-a435-466d-a0a0-acbf76b8ca30/bin/uautomizer-Dbtcem3rbc/data/c94767292/c6fc1a3e00ce4c378b9a5d113bf9a1e8 [2022-11-02 21:12:08,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:12:08,801 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:12:08,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:12:08,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:12:08,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:12:08,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:12:08" (1/1) ... [2022-11-02 21:12:08,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e9dbcab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:08, skipping insertion in model container [2022-11-02 21:12:08,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:12:08" (1/1) ... [2022-11-02 21:12:08,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:12:08,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:12:09,109 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_9ff833f8-a435-466d-a0a0-acbf76b8ca30/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2022-11-02 21:12:09,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:12:09,328 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:12:09,345 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_9ff833f8-a435-466d-a0a0-acbf76b8ca30/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2022-11-02 21:12:09,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:12:09,447 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:12:09,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:09 WrapperNode [2022-11-02 21:12:09,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:12:09,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:12:09,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:12:09,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:12:09,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:09" (1/1) ... [2022-11-02 21:12:09,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:09" (1/1) ... [2022-11-02 21:12:09,528 INFO L138 Inliner]: procedures = 165, calls = 45, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2022-11-02 21:12:09,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:12:09,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:12:09,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:12:09,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:12:09,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:09" (1/1) ... [2022-11-02 21:12:09,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:09" (1/1) ... [2022-11-02 21:12:09,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:09" (1/1) ... [2022-11-02 21:12:09,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:09" (1/1) ... [2022-11-02 21:12:09,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:09" (1/1) ... [2022-11-02 21:12:09,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:09" (1/1) ... [2022-11-02 21:12:09,587 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:09" (1/1) ... [2022-11-02 21:12:09,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:09" (1/1) ... [2022-11-02 21:12:09,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:12:09,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:12:09,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:12:09,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:12:09,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:09" (1/1) ... [2022-11-02 21:12:09,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:12:09,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff833f8-a435-466d-a0a0-acbf76b8ca30/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:09,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff833f8-a435-466d-a0a0-acbf76b8ca30/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:12:09,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff833f8-a435-466d-a0a0-acbf76b8ca30/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:12:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-02 21:12:09,699 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-02 21:12:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:12:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 21:12:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:12:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:12:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2022-11-02 21:12:09,700 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2022-11-02 21:12:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-02 21:12:09,701 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-02 21:12:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:12:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:12:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:12:09,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:12:09,704 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 21:12:09,892 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:12:09,893 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:12:10,328 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:12:10,337 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:12:10,342 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 21:12:10,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:12:10 BoogieIcfgContainer [2022-11-02 21:12:10,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:12:10,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:12:10,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:12:10,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:12:10,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:12:08" (1/3) ... [2022-11-02 21:12:10,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f0d8eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:12:10, skipping insertion in model container [2022-11-02 21:12:10,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:09" (2/3) ... [2022-11-02 21:12:10,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f0d8eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:12:10, skipping insertion in model container [2022-11-02 21:12:10,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:12:10" (3/3) ... [2022-11-02 21:12:10,359 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2022-11-02 21:12:10,369 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:12:10,382 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:12:10,382 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-02 21:12:10,383 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:12:10,489 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 21:12:10,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 167 transitions, 349 flow [2022-11-02 21:12:10,681 INFO L130 PetriNetUnfolder]: 5/164 cut-off events. [2022-11-02 21:12:10,681 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 21:12:10,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 164 events. 5/164 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 253 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2022-11-02 21:12:10,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 167 transitions, 349 flow [2022-11-02 21:12:10,694 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 164 transitions, 337 flow [2022-11-02 21:12:10,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:12:10,713 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;@62edc9c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:12:10,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-02 21:12:10,756 INFO L130 PetriNetUnfolder]: 1/115 cut-off events. [2022-11-02 21:12:10,756 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 21:12:10,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:12:10,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:10,759 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 21:12:10,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:10,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1404558984, now seen corresponding path program 1 times [2022-11-02 21:12:10,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:10,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132081561] [2022-11-02 21:12:10,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:10,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:11,652 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 21:12:11,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:11,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132081561] [2022-11-02 21:12:11,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132081561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:11,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:11,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:12:11,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571943120] [2022-11-02 21:12:11,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:11,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:12:11,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:11,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:12:11,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:12:11,715 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 167 [2022-11-02 21:12:11,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 164 transitions, 337 flow. Second operand has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 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 21:12:11,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:12:11,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 167 [2022-11-02 21:12:11,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:12:13,103 INFO L130 PetriNetUnfolder]: 1049/3556 cut-off events. [2022-11-02 21:12:13,103 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2022-11-02 21:12:13,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5286 conditions, 3556 events. 1049/3556 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 33674 event pairs, 294 based on Foata normal form. 502/3885 useless extension candidates. Maximal degree in co-relation 5235. Up to 818 conditions per place. [2022-11-02 21:12:13,152 INFO L137 encePairwiseOnDemand]: 153/167 looper letters, 96 selfloop transitions, 21 changer transitions 0/252 dead transitions. [2022-11-02 21:12:13,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 252 transitions, 789 flow [2022-11-02 21:12:13,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 21:12:13,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-02 21:12:13,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2371 transitions. [2022-11-02 21:12:13,178 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8873502994011976 [2022-11-02 21:12:13,179 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2371 transitions. [2022-11-02 21:12:13,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2371 transitions. [2022-11-02 21:12:13,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:12:13,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2371 transitions. [2022-11-02 21:12:13,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 148.1875) internal successors, (2371), 16 states have internal predecessors, (2371), 0 states have call successors, (0), 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 21:12:13,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 0 states have call successors, (0), 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 21:12:13,218 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 0 states have call successors, (0), 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 21:12:13,220 INFO L175 Difference]: Start difference. First operand has 169 places, 164 transitions, 337 flow. Second operand 16 states and 2371 transitions. [2022-11-02 21:12:13,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 252 transitions, 789 flow [2022-11-02 21:12:13,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 252 transitions, 772 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-02 21:12:13,235 INFO L231 Difference]: Finished difference. Result has 182 places, 175 transitions, 432 flow [2022-11-02 21:12:13,237 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=432, PETRI_PLACES=182, PETRI_TRANSITIONS=175} [2022-11-02 21:12:13,241 INFO L287 CegarLoopForPetriNet]: 169 programPoint places, 13 predicate places. [2022-11-02 21:12:13,241 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 175 transitions, 432 flow [2022-11-02 21:12:13,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 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 21:12:13,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:12:13,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:13,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:12:13,244 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 21:12:13,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:13,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1253064817, now seen corresponding path program 1 times [2022-11-02 21:12:13,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:13,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621654740] [2022-11-02 21:12:13,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:13,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:13,792 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 21:12:13,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:13,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621654740] [2022-11-02 21:12:13,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621654740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:13,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:13,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:12:13,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592731518] [2022-11-02 21:12:13,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:13,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:12:13,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:13,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:12:13,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:12:13,801 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 167 [2022-11-02 21:12:13,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 175 transitions, 432 flow. Second operand has 8 states, 8 states have (on average 133.75) internal successors, (1070), 8 states have internal predecessors, (1070), 0 states have call successors, (0), 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 21:12:13,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:12:13,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 167 [2022-11-02 21:12:13,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:12:16,027 INFO L130 PetriNetUnfolder]: 2875/8300 cut-off events. [2022-11-02 21:12:16,027 INFO L131 PetriNetUnfolder]: For 1788/1788 co-relation queries the response was YES. [2022-11-02 21:12:16,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14921 conditions, 8300 events. 2875/8300 cut-off events. For 1788/1788 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 87899 event pairs, 569 based on Foata normal form. 0/7965 useless extension candidates. Maximal degree in co-relation 14862. Up to 1817 conditions per place. [2022-11-02 21:12:16,147 INFO L137 encePairwiseOnDemand]: 153/167 looper letters, 108 selfloop transitions, 69 changer transitions 0/313 dead transitions. [2022-11-02 21:12:16,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 313 transitions, 1259 flow [2022-11-02 21:12:16,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 21:12:16,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-02 21:12:16,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2239 transitions. [2022-11-02 21:12:16,155 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8379491017964071 [2022-11-02 21:12:16,155 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2239 transitions. [2022-11-02 21:12:16,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2239 transitions. [2022-11-02 21:12:16,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:12:16,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2239 transitions. [2022-11-02 21:12:16,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 139.9375) internal successors, (2239), 16 states have internal predecessors, (2239), 0 states have call successors, (0), 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 21:12:16,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 0 states have call successors, (0), 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 21:12:16,172 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 0 states have call successors, (0), 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 21:12:16,172 INFO L175 Difference]: Start difference. First operand has 182 places, 175 transitions, 432 flow. Second operand 16 states and 2239 transitions. [2022-11-02 21:12:16,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 313 transitions, 1259 flow [2022-11-02 21:12:16,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 313 transitions, 1257 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 21:12:16,206 INFO L231 Difference]: Finished difference. Result has 201 places, 242 transitions, 936 flow [2022-11-02 21:12:16,208 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=936, PETRI_PLACES=201, PETRI_TRANSITIONS=242} [2022-11-02 21:12:16,209 INFO L287 CegarLoopForPetriNet]: 169 programPoint places, 32 predicate places. [2022-11-02 21:12:16,209 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 242 transitions, 936 flow [2022-11-02 21:12:16,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 133.75) internal successors, (1070), 8 states have internal predecessors, (1070), 0 states have call successors, (0), 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 21:12:16,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:12:16,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:16,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:12:16,211 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 21:12:16,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:16,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1700488748, now seen corresponding path program 1 times [2022-11-02 21:12:16,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:16,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933620042] [2022-11-02 21:12:16,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:16,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:16,627 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 21:12:16,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:16,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933620042] [2022-11-02 21:12:16,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933620042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:16,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:16,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:12:16,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658912358] [2022-11-02 21:12:16,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:16,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:12:16,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:16,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:12:16,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:12:16,637 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 167 [2022-11-02 21:12:16,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 242 transitions, 936 flow. Second operand has 8 states, 8 states have (on average 139.625) internal successors, (1117), 8 states have internal predecessors, (1117), 0 states have call successors, (0), 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 21:12:16,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:12:16,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 167 [2022-11-02 21:12:16,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:12:21,054 INFO L130 PetriNetUnfolder]: 5834/22499 cut-off events. [2022-11-02 21:12:21,055 INFO L131 PetriNetUnfolder]: For 13189/13404 co-relation queries the response was YES. [2022-11-02 21:12:21,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43949 conditions, 22499 events. 5834/22499 cut-off events. For 13189/13404 co-relation queries the response was YES. Maximal size of possible extension queue 1195. Compared 306919 event pairs, 1723 based on Foata normal form. 0/21197 useless extension candidates. Maximal degree in co-relation 43886. Up to 4887 conditions per place. [2022-11-02 21:12:21,527 INFO L137 encePairwiseOnDemand]: 157/167 looper letters, 166 selfloop transitions, 227 changer transitions 54/603 dead transitions. [2022-11-02 21:12:21,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 603 transitions, 4140 flow [2022-11-02 21:12:21,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 21:12:21,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-02 21:12:21,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2316 transitions. [2022-11-02 21:12:21,534 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8667664670658682 [2022-11-02 21:12:21,534 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2316 transitions. [2022-11-02 21:12:21,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2316 transitions. [2022-11-02 21:12:21,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:12:21,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2316 transitions. [2022-11-02 21:12:21,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 144.75) internal successors, (2316), 16 states have internal predecessors, (2316), 0 states have call successors, (0), 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 21:12:21,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 0 states have call successors, (0), 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 21:12:21,551 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 0 states have call successors, (0), 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 21:12:21,551 INFO L175 Difference]: Start difference. First operand has 201 places, 242 transitions, 936 flow. Second operand 16 states and 2316 transitions. [2022-11-02 21:12:21,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 603 transitions, 4140 flow [2022-11-02 21:12:21,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 603 transitions, 4138 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 21:12:21,916 INFO L231 Difference]: Finished difference. Result has 223 places, 469 transitions, 3493 flow [2022-11-02 21:12:21,916 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3493, PETRI_PLACES=223, PETRI_TRANSITIONS=469} [2022-11-02 21:12:21,917 INFO L287 CegarLoopForPetriNet]: 169 programPoint places, 54 predicate places. [2022-11-02 21:12:21,918 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 469 transitions, 3493 flow [2022-11-02 21:12:21,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 139.625) internal successors, (1117), 8 states have internal predecessors, (1117), 0 states have call successors, (0), 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 21:12:21,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:12:21,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:21,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:12:21,920 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 21:12:21,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:21,920 INFO L85 PathProgramCache]: Analyzing trace with hash -685021039, now seen corresponding path program 1 times [2022-11-02 21:12:21,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:21,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885372074] [2022-11-02 21:12:21,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:21,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:22,091 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 21:12:22,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:22,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885372074] [2022-11-02 21:12:22,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885372074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:22,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:22,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:12:22,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964866337] [2022-11-02 21:12:22,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:22,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:12:22,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:22,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:12:22,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:12:22,101 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 167 [2022-11-02 21:12:22,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 469 transitions, 3493 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 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 21:12:22,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:12:22,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 167 [2022-11-02 21:12:22,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:12:27,048 INFO L130 PetriNetUnfolder]: 4456/24930 cut-off events. [2022-11-02 21:12:27,048 INFO L131 PetriNetUnfolder]: For 7906/7911 co-relation queries the response was YES. [2022-11-02 21:12:27,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44625 conditions, 24930 events. 4456/24930 cut-off events. For 7906/7911 co-relation queries the response was YES. Maximal size of possible extension queue 1004. Compared 367269 event pairs, 1362 based on Foata normal form. 700/25215 useless extension candidates. Maximal degree in co-relation 44548. Up to 5167 conditions per place. [2022-11-02 21:12:27,338 INFO L137 encePairwiseOnDemand]: 154/167 looper letters, 25 selfloop transitions, 13 changer transitions 0/362 dead transitions. [2022-11-02 21:12:27,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 362 transitions, 2389 flow [2022-11-02 21:12:27,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:12:27,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:12:27,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2022-11-02 21:12:27,341 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8882235528942116 [2022-11-02 21:12:27,341 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 445 transitions. [2022-11-02 21:12:27,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions. [2022-11-02 21:12:27,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:12:27,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions. [2022-11-02 21:12:27,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 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 21:12:27,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 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 21:12:27,349 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 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 21:12:27,349 INFO L175 Difference]: Start difference. First operand has 223 places, 469 transitions, 3493 flow. Second operand 3 states and 445 transitions. [2022-11-02 21:12:27,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 362 transitions, 2389 flow [2022-11-02 21:12:28,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 362 transitions, 2387 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 21:12:28,107 INFO L231 Difference]: Finished difference. Result has 225 places, 357 transitions, 2352 flow [2022-11-02 21:12:28,108 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2281, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2352, PETRI_PLACES=225, PETRI_TRANSITIONS=357} [2022-11-02 21:12:28,108 INFO L287 CegarLoopForPetriNet]: 169 programPoint places, 56 predicate places. [2022-11-02 21:12:28,109 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 357 transitions, 2352 flow [2022-11-02 21:12:28,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 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 21:12:28,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:12:28,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:28,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:12:28,110 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 21:12:28,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:28,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1913673872, now seen corresponding path program 1 times [2022-11-02 21:12:28,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:28,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942750807] [2022-11-02 21:12:28,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:28,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:28,272 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 21:12:28,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:28,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942750807] [2022-11-02 21:12:28,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942750807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:28,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:28,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:12:28,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082476773] [2022-11-02 21:12:28,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:28,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:12:28,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:28,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:12:28,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:12:28,277 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 167 [2022-11-02 21:12:28,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 357 transitions, 2352 flow. Second operand has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 0 states have call successors, (0), 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 21:12:28,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:12:28,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 167 [2022-11-02 21:12:28,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:12:37,802 INFO L130 PetriNetUnfolder]: 11813/53518 cut-off events. [2022-11-02 21:12:37,802 INFO L131 PetriNetUnfolder]: For 26435/27591 co-relation queries the response was YES. [2022-11-02 21:12:38,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109902 conditions, 53518 events. 11813/53518 cut-off events. For 26435/27591 co-relation queries the response was YES. Maximal size of possible extension queue 2047. Compared 840063 event pairs, 3257 based on Foata normal form. 442/52433 useless extension candidates. Maximal degree in co-relation 109828. Up to 8791 conditions per place. [2022-11-02 21:12:38,562 INFO L137 encePairwiseOnDemand]: 158/167 looper letters, 114 selfloop transitions, 200 changer transitions 0/475 dead transitions. [2022-11-02 21:12:38,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 475 transitions, 3645 flow [2022-11-02 21:12:38,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:12:38,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-02 21:12:38,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2014 transitions. [2022-11-02 21:12:38,577 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8614200171086399 [2022-11-02 21:12:38,577 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2014 transitions. [2022-11-02 21:12:38,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2014 transitions. [2022-11-02 21:12:38,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:12:38,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2014 transitions. [2022-11-02 21:12:38,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 143.85714285714286) internal successors, (2014), 14 states have internal predecessors, (2014), 0 states have call successors, (0), 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 21:12:38,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 167.0) internal successors, (2505), 15 states have internal predecessors, (2505), 0 states have call successors, (0), 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 21:12:38,605 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 167.0) internal successors, (2505), 15 states have internal predecessors, (2505), 0 states have call successors, (0), 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 21:12:38,605 INFO L175 Difference]: Start difference. First operand has 225 places, 357 transitions, 2352 flow. Second operand 14 states and 2014 transitions. [2022-11-02 21:12:38,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 475 transitions, 3645 flow [2022-11-02 21:12:40,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 475 transitions, 3632 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 21:12:40,324 INFO L231 Difference]: Finished difference. Result has 246 places, 397 transitions, 3370 flow [2022-11-02 21:12:40,325 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2339, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3370, PETRI_PLACES=246, PETRI_TRANSITIONS=397} [2022-11-02 21:12:40,326 INFO L287 CegarLoopForPetriNet]: 169 programPoint places, 77 predicate places. [2022-11-02 21:12:40,326 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 397 transitions, 3370 flow [2022-11-02 21:12:40,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 0 states have call successors, (0), 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 21:12:40,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:12:40,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:40,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:12:40,327 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 21:12:40,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:40,328 INFO L85 PathProgramCache]: Analyzing trace with hash -2006024519, now seen corresponding path program 1 times [2022-11-02 21:12:40,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:40,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915962550] [2022-11-02 21:12:40,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:40,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:40,622 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 21:12:40,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:40,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915962550] [2022-11-02 21:12:40,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915962550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:40,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:40,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:12:40,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322945046] [2022-11-02 21:12:40,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:40,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:12:40,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:40,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:12:40,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:12:40,627 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 167 [2022-11-02 21:12:40,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 397 transitions, 3370 flow. Second operand has 6 states, 6 states have (on average 131.33333333333334) internal successors, (788), 6 states have internal predecessors, (788), 0 states have call successors, (0), 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 21:12:40,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:12:40,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 167 [2022-11-02 21:12:40,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:12:42,744 INFO L130 PetriNetUnfolder]: 1834/12191 cut-off events. [2022-11-02 21:12:42,744 INFO L131 PetriNetUnfolder]: For 12085/12545 co-relation queries the response was YES. [2022-11-02 21:12:42,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28808 conditions, 12191 events. 1834/12191 cut-off events. For 12085/12545 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 162120 event pairs, 123 based on Foata normal form. 587/12709 useless extension candidates. Maximal degree in co-relation 28715. Up to 2024 conditions per place. [2022-11-02 21:12:42,873 INFO L137 encePairwiseOnDemand]: 159/167 looper letters, 36 selfloop transitions, 11 changer transitions 0/360 dead transitions. [2022-11-02 21:12:42,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 360 transitions, 2899 flow [2022-11-02 21:12:42,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:12:42,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 21:12:42,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 680 transitions. [2022-11-02 21:12:42,876 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8143712574850299 [2022-11-02 21:12:42,876 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 680 transitions. [2022-11-02 21:12:42,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 680 transitions. [2022-11-02 21:12:42,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:12:42,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 680 transitions. [2022-11-02 21:12:42,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 0 states have call successors, (0), 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 21:12:42,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 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 21:12:42,882 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 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 21:12:42,882 INFO L175 Difference]: Start difference. First operand has 246 places, 397 transitions, 3370 flow. Second operand 5 states and 680 transitions. [2022-11-02 21:12:42,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 360 transitions, 2899 flow [2022-11-02 21:12:43,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 360 transitions, 2869 flow, removed 15 selfloop flow, removed 1 redundant places. [2022-11-02 21:12:43,153 INFO L231 Difference]: Finished difference. Result has 248 places, 352 transitions, 2765 flow [2022-11-02 21:12:43,153 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2743, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2765, PETRI_PLACES=248, PETRI_TRANSITIONS=352} [2022-11-02 21:12:43,157 INFO L287 CegarLoopForPetriNet]: 169 programPoint places, 79 predicate places. [2022-11-02 21:12:43,157 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 352 transitions, 2765 flow [2022-11-02 21:12:43,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.33333333333334) internal successors, (788), 6 states have internal predecessors, (788), 0 states have call successors, (0), 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 21:12:43,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:12:43,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:43,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:12:43,158 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 21:12:43,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:43,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1716014188, now seen corresponding path program 1 times [2022-11-02 21:12:43,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:43,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777947775] [2022-11-02 21:12:43,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:43,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:43,333 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 21:12:43,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:43,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777947775] [2022-11-02 21:12:43,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777947775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:43,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:43,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:12:43,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624803551] [2022-11-02 21:12:43,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:43,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:12:43,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:43,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:12:43,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:12:43,346 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 167 [2022-11-02 21:12:43,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 352 transitions, 2765 flow. Second operand has 8 states, 8 states have (on average 137.125) internal successors, (1097), 8 states have internal predecessors, (1097), 0 states have call successors, (0), 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 21:12:43,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:12:43,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 167 [2022-11-02 21:12:43,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:12:48,463 INFO L130 PetriNetUnfolder]: 5617/25679 cut-off events. [2022-11-02 21:12:48,463 INFO L131 PetriNetUnfolder]: For 28357/28973 co-relation queries the response was YES. [2022-11-02 21:12:48,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61076 conditions, 25679 events. 5617/25679 cut-off events. For 28357/28973 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 355227 event pairs, 1879 based on Foata normal form. 313/25298 useless extension candidates. Maximal degree in co-relation 60991. Up to 3253 conditions per place. [2022-11-02 21:12:48,791 INFO L137 encePairwiseOnDemand]: 158/167 looper letters, 109 selfloop transitions, 162 changer transitions 0/430 dead transitions. [2022-11-02 21:12:48,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 430 transitions, 3645 flow [2022-11-02 21:12:48,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:12:48,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-02 21:12:48,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2009 transitions. [2022-11-02 21:12:48,797 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8592814371257484 [2022-11-02 21:12:48,797 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2009 transitions. [2022-11-02 21:12:48,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2009 transitions. [2022-11-02 21:12:48,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:12:48,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2009 transitions. [2022-11-02 21:12:48,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 143.5) internal successors, (2009), 14 states have internal predecessors, (2009), 0 states have call successors, (0), 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 21:12:48,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 167.0) internal successors, (2505), 15 states have internal predecessors, (2505), 0 states have call successors, (0), 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 21:12:48,811 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 167.0) internal successors, (2505), 15 states have internal predecessors, (2505), 0 states have call successors, (0), 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 21:12:48,811 INFO L175 Difference]: Start difference. First operand has 248 places, 352 transitions, 2765 flow. Second operand 14 states and 2009 transitions. [2022-11-02 21:12:48,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 430 transitions, 3645 flow [2022-11-02 21:12:49,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 430 transitions, 3633 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-02 21:12:49,463 INFO L231 Difference]: Finished difference. Result has 263 places, 359 transitions, 3221 flow [2022-11-02 21:12:49,464 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2753, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3221, PETRI_PLACES=263, PETRI_TRANSITIONS=359} [2022-11-02 21:12:49,465 INFO L287 CegarLoopForPetriNet]: 169 programPoint places, 94 predicate places. [2022-11-02 21:12:49,465 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 359 transitions, 3221 flow [2022-11-02 21:12:49,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 137.125) internal successors, (1097), 8 states have internal predecessors, (1097), 0 states have call successors, (0), 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 21:12:49,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:12:49,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:49,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:12:49,466 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 21:12:49,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:49,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1082482069, now seen corresponding path program 1 times [2022-11-02 21:12:49,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:49,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376069449] [2022-11-02 21:12:49,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:49,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:49,933 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 21:12:49,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:49,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376069449] [2022-11-02 21:12:49,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376069449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:49,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:49,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:12:49,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048812209] [2022-11-02 21:12:49,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:49,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:12:49,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:49,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:12:49,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:12:49,942 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 167 [2022-11-02 21:12:49,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 359 transitions, 3221 flow. Second operand has 8 states, 8 states have (on average 131.375) internal successors, (1051), 8 states have internal predecessors, (1051), 0 states have call successors, (0), 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 21:12:49,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:12:49,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 167 [2022-11-02 21:12:49,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:12:55,353 INFO L130 PetriNetUnfolder]: 5973/26715 cut-off events. [2022-11-02 21:12:55,353 INFO L131 PetriNetUnfolder]: For 40115/41521 co-relation queries the response was YES. [2022-11-02 21:12:55,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65779 conditions, 26715 events. 5973/26715 cut-off events. For 40115/41521 co-relation queries the response was YES. Maximal size of possible extension queue 886. Compared 372560 event pairs, 1548 based on Foata normal form. 407/26253 useless extension candidates. Maximal degree in co-relation 65687. Up to 3440 conditions per place. [2022-11-02 21:12:55,669 INFO L137 encePairwiseOnDemand]: 155/167 looper letters, 185 selfloop transitions, 106 changer transitions 2/454 dead transitions. [2022-11-02 21:12:55,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 454 transitions, 4697 flow [2022-11-02 21:12:55,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:12:55,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 21:12:55,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1518 transitions. [2022-11-02 21:12:55,674 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8263473053892215 [2022-11-02 21:12:55,674 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1518 transitions. [2022-11-02 21:12:55,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1518 transitions. [2022-11-02 21:12:55,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:12:55,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1518 transitions. [2022-11-02 21:12:55,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 138.0) internal successors, (1518), 11 states have internal predecessors, (1518), 0 states have call successors, (0), 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 21:12:55,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 167.0) internal successors, (2004), 12 states have internal predecessors, (2004), 0 states have call successors, (0), 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 21:12:55,685 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 167.0) internal successors, (2004), 12 states have internal predecessors, (2004), 0 states have call successors, (0), 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 21:12:55,685 INFO L175 Difference]: Start difference. First operand has 263 places, 359 transitions, 3221 flow. Second operand 11 states and 1518 transitions. [2022-11-02 21:12:55,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 454 transitions, 4697 flow [2022-11-02 21:12:56,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 454 transitions, 4343 flow, removed 27 selfloop flow, removed 7 redundant places. [2022-11-02 21:12:56,221 INFO L231 Difference]: Finished difference. Result has 271 places, 387 transitions, 3455 flow [2022-11-02 21:12:56,222 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2951, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3455, PETRI_PLACES=271, PETRI_TRANSITIONS=387} [2022-11-02 21:12:56,223 INFO L287 CegarLoopForPetriNet]: 169 programPoint places, 102 predicate places. [2022-11-02 21:12:56,223 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 387 transitions, 3455 flow [2022-11-02 21:12:56,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 131.375) internal successors, (1051), 8 states have internal predecessors, (1051), 0 states have call successors, (0), 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 21:12:56,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:12:56,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:56,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:12:56,224 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 21:12:56,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:56,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1741595232, now seen corresponding path program 1 times [2022-11-02 21:12:56,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:56,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603207997] [2022-11-02 21:12:56,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:56,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:56,462 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 21:12:56,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:56,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603207997] [2022-11-02 21:12:56,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603207997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:56,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:56,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:12:56,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816719189] [2022-11-02 21:12:56,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:56,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:12:56,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:56,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:12:56,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:12:56,466 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 167 [2022-11-02 21:12:56,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 387 transitions, 3455 flow. Second operand has 8 states, 8 states have (on average 137.25) internal successors, (1098), 8 states have internal predecessors, (1098), 0 states have call successors, (0), 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 21:12:56,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:12:56,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 167 [2022-11-02 21:12:56,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:13:03,246 INFO L130 PetriNetUnfolder]: 8102/34804 cut-off events. [2022-11-02 21:13:03,246 INFO L131 PetriNetUnfolder]: For 63523/65207 co-relation queries the response was YES. [2022-11-02 21:13:03,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89211 conditions, 34804 events. 8102/34804 cut-off events. For 63523/65207 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 497896 event pairs, 1783 based on Foata normal form. 368/34326 useless extension candidates. Maximal degree in co-relation 89118. Up to 4553 conditions per place. [2022-11-02 21:13:03,691 INFO L137 encePairwiseOnDemand]: 159/167 looper letters, 160 selfloop transitions, 107 changer transitions 42/490 dead transitions. [2022-11-02 21:13:03,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 490 transitions, 5091 flow [2022-11-02 21:13:03,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:13:03,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 21:13:03,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1573 transitions. [2022-11-02 21:13:03,696 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8562874251497006 [2022-11-02 21:13:03,697 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1573 transitions. [2022-11-02 21:13:03,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1573 transitions. [2022-11-02 21:13:03,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:13:03,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1573 transitions. [2022-11-02 21:13:03,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 143.0) internal successors, (1573), 11 states have internal predecessors, (1573), 0 states have call successors, (0), 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 21:13:03,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 167.0) internal successors, (2004), 12 states have internal predecessors, (2004), 0 states have call successors, (0), 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 21:13:03,707 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 167.0) internal successors, (2004), 12 states have internal predecessors, (2004), 0 states have call successors, (0), 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 21:13:03,708 INFO L175 Difference]: Start difference. First operand has 271 places, 387 transitions, 3455 flow. Second operand 11 states and 1573 transitions. [2022-11-02 21:13:03,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 490 transitions, 5091 flow [2022-11-02 21:13:05,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 490 transitions, 4988 flow, removed 15 selfloop flow, removed 2 redundant places. [2022-11-02 21:13:05,189 INFO L231 Difference]: Finished difference. Result has 277 places, 386 transitions, 3495 flow [2022-11-02 21:13:05,190 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=3398, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3495, PETRI_PLACES=277, PETRI_TRANSITIONS=386} [2022-11-02 21:13:05,190 INFO L287 CegarLoopForPetriNet]: 169 programPoint places, 108 predicate places. [2022-11-02 21:13:05,191 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 386 transitions, 3495 flow [2022-11-02 21:13:05,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 137.25) internal successors, (1098), 8 states have internal predecessors, (1098), 0 states have call successors, (0), 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 21:13:05,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:13:05,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:05,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:13:05,193 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-02 21:13:05,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:05,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1824582791, now seen corresponding path program 1 times [2022-11-02 21:13:05,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:13:05,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968406399] [2022-11-02 21:13:05,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:05,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:13:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:05,420 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 21:13:05,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:13:05,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968406399] [2022-11-02 21:13:05,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968406399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:13:05,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:13:05,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:13:05,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114322026] [2022-11-02 21:13:05,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:13:05,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:13:05,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:13:05,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:13:05,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:13:05,424 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 167 [2022-11-02 21:13:05,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 386 transitions, 3495 flow. Second operand has 6 states, 6 states have (on average 131.83333333333334) internal successors, (791), 6 states have internal predecessors, (791), 0 states have call successors, (0), 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 21:13:05,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:13:05,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 167 [2022-11-02 21:13:05,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:13:06,294 INFO L130 PetriNetUnfolder]: 354/4480 cut-off events. [2022-11-02 21:13:06,294 INFO L131 PetriNetUnfolder]: For 5290/5404 co-relation queries the response was YES. [2022-11-02 21:13:06,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10985 conditions, 4480 events. 354/4480 cut-off events. For 5290/5404 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 50857 event pairs, 43 based on Foata normal form. 41/4513 useless extension candidates. Maximal degree in co-relation 10883. Up to 609 conditions per place. [2022-11-02 21:13:06,333 INFO L137 encePairwiseOnDemand]: 155/167 looper letters, 0 selfloop transitions, 0 changer transitions 276/276 dead transitions. [2022-11-02 21:13:06,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 276 transitions, 2051 flow [2022-11-02 21:13:06,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:13:06,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 21:13:06,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 681 transitions. [2022-11-02 21:13:06,336 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8155688622754491 [2022-11-02 21:13:06,336 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 681 transitions. [2022-11-02 21:13:06,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 681 transitions. [2022-11-02 21:13:06,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:13:06,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 681 transitions. [2022-11-02 21:13:06,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 0 states have call successors, (0), 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 21:13:06,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 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 21:13:06,341 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 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 21:13:06,342 INFO L175 Difference]: Start difference. First operand has 277 places, 386 transitions, 3495 flow. Second operand 5 states and 681 transitions. [2022-11-02 21:13:06,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 276 transitions, 2051 flow [2022-11-02 21:13:06,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 276 transitions, 1761 flow, removed 26 selfloop flow, removed 25 redundant places. [2022-11-02 21:13:06,400 INFO L231 Difference]: Finished difference. Result has 246 places, 0 transitions, 0 flow [2022-11-02 21:13:06,401 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=246, PETRI_TRANSITIONS=0} [2022-11-02 21:13:06,401 INFO L287 CegarLoopForPetriNet]: 169 programPoint places, 77 predicate places. [2022-11-02 21:13:06,402 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 0 transitions, 0 flow [2022-11-02 21:13:06,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.83333333333334) internal successors, (791), 6 states have internal predecessors, (791), 0 states have call successors, (0), 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 21:13:06,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2022-11-02 21:13:06,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2022-11-02 21:13:06,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2022-11-02 21:13:06,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2022-11-02 21:13:06,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2022-11-02 21:13:06,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 9 remaining) [2022-11-02 21:13:06,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2022-11-02 21:13:06,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2022-11-02 21:13:06,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2022-11-02 21:13:06,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:13:06,408 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:06,414 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 21:13:06,414 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:13:06,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:13:06 BasicIcfg [2022-11-02 21:13:06,419 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:13:06,420 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:13:06,420 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:13:06,420 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:13:06,421 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:12:10" (3/4) ... [2022-11-02 21:13:06,424 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 21:13:06,430 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2022-11-02 21:13:06,431 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t3_fun [2022-11-02 21:13:06,431 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-11-02 21:13:06,435 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-02 21:13:06,436 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-02 21:13:06,436 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 21:13:06,436 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 21:13:06,471 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff833f8-a435-466d-a0a0-acbf76b8ca30/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 21:13:06,471 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:13:06,472 INFO L158 Benchmark]: Toolchain (without parser) took 57670.65ms. Allocated memory was 92.3MB in the beginning and 12.9GB in the end (delta: 12.9GB). Free memory was 51.1MB in the beginning and 10.4GB in the end (delta: -10.4GB). Peak memory consumption was 2.5GB. Max. memory is 16.1GB. [2022-11-02 21:13:06,472 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 92.3MB. Free memory is still 68.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:13:06,473 INFO L158 Benchmark]: CACSL2BoogieTranslator took 641.60ms. Allocated memory is still 92.3MB. Free memory was 51.0MB in the beginning and 57.1MB in the end (delta: -6.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 21:13:06,473 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.97ms. Allocated memory is still 92.3MB. Free memory was 57.1MB in the beginning and 54.6MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 21:13:06,473 INFO L158 Benchmark]: Boogie Preprocessor took 62.23ms. Allocated memory is still 92.3MB. Free memory was 54.6MB in the beginning and 53.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:13:06,474 INFO L158 Benchmark]: RCFGBuilder took 754.08ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 53.1MB in the beginning and 85.2MB in the end (delta: -32.1MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2022-11-02 21:13:06,474 INFO L158 Benchmark]: TraceAbstraction took 56070.77ms. Allocated memory was 111.1MB in the beginning and 12.9GB in the end (delta: 12.8GB). Free memory was 84.7MB in the beginning and 10.4GB in the end (delta: -10.3GB). Peak memory consumption was 2.5GB. Max. memory is 16.1GB. [2022-11-02 21:13:06,475 INFO L158 Benchmark]: Witness Printer took 51.53ms. Allocated memory is still 12.9GB. Free memory was 10.4GB in the beginning and 10.4GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:13:06,476 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 92.3MB. Free memory is still 68.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 641.60ms. Allocated memory is still 92.3MB. Free memory was 51.0MB in the beginning and 57.1MB in the end (delta: -6.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.97ms. Allocated memory is still 92.3MB. Free memory was 57.1MB in the beginning and 54.6MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.23ms. Allocated memory is still 92.3MB. Free memory was 54.6MB in the beginning and 53.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 754.08ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 53.1MB in the beginning and 85.2MB in the end (delta: -32.1MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * TraceAbstraction took 56070.77ms. Allocated memory was 111.1MB in the beginning and 12.9GB in the end (delta: 12.8GB). Free memory was 84.7MB in the beginning and 10.4GB in the end (delta: -10.3GB). Peak memory consumption was 2.5GB. Max. memory is 16.1GB. * Witness Printer took 51.53ms. Allocated memory is still 12.9GB. Free memory was 10.4GB in the beginning and 10.4GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 237 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 55.9s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 51.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 765 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 765 mSDsluCounter, 1167 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1134 mSDsCounter, 117 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1841 IncrementalHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 117 mSolverCounterUnsat, 254 mSDtfsCounter, 1841 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3495occurred in iteration=9, InterpolantAutomatonStates: 111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 789 NumberOfCodeBlocks, 789 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 779 ConstructedInterpolants, 0 QuantifiedInterpolants, 2566 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-02 21:13:06,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff833f8-a435-466d-a0a0-acbf76b8ca30/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE