./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/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_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/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_50951e1f-5a36-4073-aed9-0325523429d6/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 c245694d80bb36f575f27eb50fa261b26ec38a4ced597397981ad6c6c7486707 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:03:06,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:03:06,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:03:07,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:03:07,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:03:07,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:03:07,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:03:07,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:03:07,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:03:07,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:03:07,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:03:07,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:03:07,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:03:07,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:03:07,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:03:07,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:03:07,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:03:07,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:03:07,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:03:07,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:03:07,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:03:07,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:03:07,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:03:07,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:03:07,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:03:07,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:03:07,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:03:07,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:03:07,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:03:07,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:03:07,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:03:07,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:03:07,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:03:07,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:03:07,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:03:07,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:03:07,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:03:07,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:03:07,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:03:07,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:03:07,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:03:07,073 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:03:07,105 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:03:07,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:03:07,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:03:07,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:03:07,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:03:07,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:03:07,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:03:07,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:03:07,108 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:03:07,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:03:07,108 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:03:07,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:03:07,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:03:07,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:03:07,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:03:07,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:03:07,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:03:07,109 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:03:07,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:03:07,110 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:03:07,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:03:07,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:03:07,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:03:07,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:03:07,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:03:07,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:03:07,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:03:07,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:03:07,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:03:07,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:03:07,112 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:03:07,112 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:03:07,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:03:07,112 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_50951e1f-5a36-4073-aed9-0325523429d6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c245694d80bb36f575f27eb50fa261b26ec38a4ced597397981ad6c6c7486707 [2022-11-02 20:03:07,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:03:07,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:03:07,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:03:07,456 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:03:07,457 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:03:07,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2022-11-02 20:03:07,525 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/data/bd2881aef/4e8d250f51ab4aadad0043ff61c05fc3/FLAG365a80506 [2022-11-02 20:03:08,044 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:03:08,045 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2022-11-02 20:03:08,052 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/data/bd2881aef/4e8d250f51ab4aadad0043ff61c05fc3/FLAG365a80506 [2022-11-02 20:03:08,419 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/data/bd2881aef/4e8d250f51ab4aadad0043ff61c05fc3 [2022-11-02 20:03:08,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:03:08,427 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:03:08,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:03:08,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:03:08,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:03:08,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:03:08" (1/1) ... [2022-11-02 20:03:08,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d1b78e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:08, skipping insertion in model container [2022-11-02 20:03:08,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:03:08" (1/1) ... [2022-11-02 20:03:08,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:03:08,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:03:08,657 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_50951e1f-5a36-4073-aed9-0325523429d6/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c[2554,2567] [2022-11-02 20:03:08,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:03:08,669 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:03:08,691 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_50951e1f-5a36-4073-aed9-0325523429d6/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c[2554,2567] [2022-11-02 20:03:08,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:03:08,706 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:03:08,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:08 WrapperNode [2022-11-02 20:03:08,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:03:08,707 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:03:08,708 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:03:08,708 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:03:08,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:08" (1/1) ... [2022-11-02 20:03:08,723 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:08" (1/1) ... [2022-11-02 20:03:08,741 INFO L138 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-11-02 20:03:08,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:03:08,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:03:08,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:03:08,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:03:08,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:08" (1/1) ... [2022-11-02 20:03:08,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:08" (1/1) ... [2022-11-02 20:03:08,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:08" (1/1) ... [2022-11-02 20:03:08,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:08" (1/1) ... [2022-11-02 20:03:08,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:08" (1/1) ... [2022-11-02 20:03:08,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:08" (1/1) ... [2022-11-02 20:03:08,764 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:08" (1/1) ... [2022-11-02 20:03:08,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:08" (1/1) ... [2022-11-02 20:03:08,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:03:08,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:03:08,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:03:08,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:03:08,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:08" (1/1) ... [2022-11-02 20:03:08,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:03:08,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:03:08,820 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:03:08,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:03:08,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:03:08,869 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:03:08,869 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:03:08,869 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:03:08,869 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:03:08,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:03:08,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:03:08,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:03:08,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:03:08,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:03:08,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:03:08,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:03:08,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:03:08,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:03:08,873 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 20:03:09,002 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:03:09,005 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:03:09,265 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:03:09,298 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:03:09,308 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:03:09,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:03:09 BoogieIcfgContainer [2022-11-02 20:03:09,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:03:09,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:03:09,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:03:09,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:03:09,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:03:08" (1/3) ... [2022-11-02 20:03:09,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea8e8fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:03:09, skipping insertion in model container [2022-11-02 20:03:09,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:03:08" (2/3) ... [2022-11-02 20:03:09,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea8e8fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:03:09, skipping insertion in model container [2022-11-02 20:03:09,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:03:09" (3/3) ... [2022-11-02 20:03:09,324 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2022-11-02 20:03:09,332 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:03:09,342 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:03:09,343 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:03:09,343 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:03:09,439 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:03:09,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 104 transitions, 224 flow [2022-11-02 20:03:09,525 INFO L130 PetriNetUnfolder]: 8/102 cut-off events. [2022-11-02 20:03:09,526 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:03:09,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 102 events. 8/102 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-11-02 20:03:09,529 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 104 transitions, 224 flow [2022-11-02 20:03:09,533 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 93 transitions, 198 flow [2022-11-02 20:03:09,552 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:03:09,563 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;@3872b54f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:03:09,563 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-02 20:03:09,617 INFO L130 PetriNetUnfolder]: 8/92 cut-off events. [2022-11-02 20:03:09,617 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:03:09,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:03:09,618 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] [2022-11-02 20:03:09,619 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:03:09,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:09,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1108942228, now seen corresponding path program 1 times [2022-11-02 20:03:09,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:09,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276801551] [2022-11-02 20:03:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:09,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:03:10,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:10,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276801551] [2022-11-02 20:03:10,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276801551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:03:10,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:03:10,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:03:10,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180991343] [2022-11-02 20:03:10,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:03:10,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:03:10,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:10,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:03:10,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:03:10,688 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 104 [2022-11-02 20:03:10,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 198 flow. Second operand has 8 states, 8 states have (on average 69.5) internal successors, (556), 8 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:10,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:03:10,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 104 [2022-11-02 20:03:10,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:03:11,122 INFO L130 PetriNetUnfolder]: 84/283 cut-off events. [2022-11-02 20:03:11,123 INFO L131 PetriNetUnfolder]: For 49/56 co-relation queries the response was YES. [2022-11-02 20:03:11,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 283 events. 84/283 cut-off events. For 49/56 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1064 event pairs, 28 based on Foata normal form. 4/240 useless extension candidates. Maximal degree in co-relation 322. Up to 122 conditions per place. [2022-11-02 20:03:11,127 INFO L137 encePairwiseOnDemand]: 86/104 looper letters, 31 selfloop transitions, 9 changer transitions 7/104 dead transitions. [2022-11-02 20:03:11,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 104 transitions, 323 flow [2022-11-02 20:03:11,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:03:11,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:03:11,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 725 transitions. [2022-11-02 20:03:11,145 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6971153846153846 [2022-11-02 20:03:11,146 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 725 transitions. [2022-11-02 20:03:11,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 725 transitions. [2022-11-02 20:03:11,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:03:11,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 725 transitions. [2022-11-02 20:03:11,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.5) internal successors, (725), 10 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:11,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:11,178 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:11,180 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 198 flow. Second operand 10 states and 725 transitions. [2022-11-02 20:03:11,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 104 transitions, 323 flow [2022-11-02 20:03:11,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 104 transitions, 309 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:03:11,193 INFO L231 Difference]: Finished difference. Result has 100 places, 91 transitions, 223 flow [2022-11-02 20:03:11,196 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=223, PETRI_PLACES=100, PETRI_TRANSITIONS=91} [2022-11-02 20:03:11,199 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 8 predicate places. [2022-11-02 20:03:11,199 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 91 transitions, 223 flow [2022-11-02 20:03:11,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.5) internal successors, (556), 8 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:11,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:03:11,200 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] [2022-11-02 20:03:11,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:03:11,201 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:03:11,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:11,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1703228035, now seen corresponding path program 1 times [2022-11-02 20:03:11,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:11,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903221985] [2022-11-02 20:03:11,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:11,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:11,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:03:11,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:11,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903221985] [2022-11-02 20:03:11,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903221985] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:03:11,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93410181] [2022-11-02 20:03:11,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:11,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:03:11,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:03:11,670 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:03:11,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:03:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:11,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:03:11,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:03:12,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:03:12,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:03:14,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:03:14,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93410181] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:03:14,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:03:14,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-02 20:03:14,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608540723] [2022-11-02 20:03:14,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:03:14,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:03:14,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:14,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:03:14,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:03:14,985 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2022-11-02 20:03:14,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 91 transitions, 223 flow. Second operand has 13 states, 13 states have (on average 72.3076923076923) internal successors, (940), 13 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:14,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:03:14,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2022-11-02 20:03:14,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:03:15,427 INFO L130 PetriNetUnfolder]: 116/418 cut-off events. [2022-11-02 20:03:15,427 INFO L131 PetriNetUnfolder]: For 54/61 co-relation queries the response was YES. [2022-11-02 20:03:15,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 418 events. 116/418 cut-off events. For 54/61 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2010 event pairs, 7 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 721. Up to 65 conditions per place. [2022-11-02 20:03:15,432 INFO L137 encePairwiseOnDemand]: 93/104 looper letters, 57 selfloop transitions, 14 changer transitions 1/133 dead transitions. [2022-11-02 20:03:15,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 133 transitions, 478 flow [2022-11-02 20:03:15,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:03:15,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:03:15,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 763 transitions. [2022-11-02 20:03:15,435 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7336538461538461 [2022-11-02 20:03:15,435 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 763 transitions. [2022-11-02 20:03:15,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 763 transitions. [2022-11-02 20:03:15,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:03:15,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 763 transitions. [2022-11-02 20:03:15,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 76.3) internal successors, (763), 10 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:15,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:15,441 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:15,441 INFO L175 Difference]: Start difference. First operand has 100 places, 91 transitions, 223 flow. Second operand 10 states and 763 transitions. [2022-11-02 20:03:15,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 133 transitions, 478 flow [2022-11-02 20:03:15,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 133 transitions, 457 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-11-02 20:03:15,446 INFO L231 Difference]: Finished difference. Result has 102 places, 99 transitions, 286 flow [2022-11-02 20:03:15,446 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=286, PETRI_PLACES=102, PETRI_TRANSITIONS=99} [2022-11-02 20:03:15,447 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 10 predicate places. [2022-11-02 20:03:15,447 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 99 transitions, 286 flow [2022-11-02 20:03:15,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 72.3076923076923) internal successors, (940), 13 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:15,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:03:15,448 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] [2022-11-02 20:03:15,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:03:15,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:03:15,675 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:03:15,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:15,675 INFO L85 PathProgramCache]: Analyzing trace with hash -995906079, now seen corresponding path program 2 times [2022-11-02 20:03:15,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:15,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303787861] [2022-11-02 20:03:15,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:15,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:15,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:03:15,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:15,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303787861] [2022-11-02 20:03:15,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303787861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:03:15,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:03:15,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:03:15,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216142908] [2022-11-02 20:03:15,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:03:15,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:03:15,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:15,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:03:15,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:03:15,919 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2022-11-02 20:03:15,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 99 transitions, 286 flow. Second operand has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:15,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:03:15,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2022-11-02 20:03:15,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:03:16,144 INFO L130 PetriNetUnfolder]: 116/398 cut-off events. [2022-11-02 20:03:16,144 INFO L131 PetriNetUnfolder]: For 216/216 co-relation queries the response was YES. [2022-11-02 20:03:16,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 398 events. 116/398 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1875 event pairs, 14 based on Foata normal form. 1/371 useless extension candidates. Maximal degree in co-relation 516. Up to 97 conditions per place. [2022-11-02 20:03:16,150 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 43 selfloop transitions, 16 changer transitions 4/124 dead transitions. [2022-11-02 20:03:16,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 124 transitions, 525 flow [2022-11-02 20:03:16,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:03:16,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:03:16,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 536 transitions. [2022-11-02 20:03:16,153 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7362637362637363 [2022-11-02 20:03:16,153 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 536 transitions. [2022-11-02 20:03:16,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 536 transitions. [2022-11-02 20:03:16,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:03:16,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 536 transitions. [2022-11-02 20:03:16,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:16,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:16,157 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:16,157 INFO L175 Difference]: Start difference. First operand has 102 places, 99 transitions, 286 flow. Second operand 7 states and 536 transitions. [2022-11-02 20:03:16,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 124 transitions, 525 flow [2022-11-02 20:03:16,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 124 transitions, 519 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-02 20:03:16,167 INFO L231 Difference]: Finished difference. Result has 108 places, 105 transitions, 381 flow [2022-11-02 20:03:16,167 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=381, PETRI_PLACES=108, PETRI_TRANSITIONS=105} [2022-11-02 20:03:16,169 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 16 predicate places. [2022-11-02 20:03:16,170 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 105 transitions, 381 flow [2022-11-02 20:03:16,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:16,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:03:16,171 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] [2022-11-02 20:03:16,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:03:16,171 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:03:16,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:16,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1113196752, now seen corresponding path program 1 times [2022-11-02 20:03:16,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:16,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881490045] [2022-11-02 20:03:16,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:16,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:16,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:03:16,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:16,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881490045] [2022-11-02 20:03:16,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881490045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:03:16,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:03:16,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:03:16,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021428485] [2022-11-02 20:03:16,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:03:16,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:03:16,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:16,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:03:16,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:03:16,496 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2022-11-02 20:03:16,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 105 transitions, 381 flow. Second operand has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:16,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:03:16,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2022-11-02 20:03:16,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:03:16,750 INFO L130 PetriNetUnfolder]: 111/390 cut-off events. [2022-11-02 20:03:16,751 INFO L131 PetriNetUnfolder]: For 450/457 co-relation queries the response was YES. [2022-11-02 20:03:16,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 920 conditions, 390 events. 111/390 cut-off events. For 450/457 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1831 event pairs, 14 based on Foata normal form. 2/361 useless extension candidates. Maximal degree in co-relation 611. Up to 126 conditions per place. [2022-11-02 20:03:16,755 INFO L137 encePairwiseOnDemand]: 91/104 looper letters, 48 selfloop transitions, 12 changer transitions 5/126 dead transitions. [2022-11-02 20:03:16,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 126 transitions, 589 flow [2022-11-02 20:03:16,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:03:16,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:03:16,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 537 transitions. [2022-11-02 20:03:16,759 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7376373626373627 [2022-11-02 20:03:16,765 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 537 transitions. [2022-11-02 20:03:16,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 537 transitions. [2022-11-02 20:03:16,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:03:16,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 537 transitions. [2022-11-02 20:03:16,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:16,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:16,770 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:16,770 INFO L175 Difference]: Start difference. First operand has 108 places, 105 transitions, 381 flow. Second operand 7 states and 537 transitions. [2022-11-02 20:03:16,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 126 transitions, 589 flow [2022-11-02 20:03:16,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 126 transitions, 581 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-02 20:03:16,779 INFO L231 Difference]: Finished difference. Result has 114 places, 105 transitions, 400 flow [2022-11-02 20:03:16,780 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=400, PETRI_PLACES=114, PETRI_TRANSITIONS=105} [2022-11-02 20:03:16,781 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 22 predicate places. [2022-11-02 20:03:16,782 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 105 transitions, 400 flow [2022-11-02 20:03:16,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:16,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:03:16,782 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] [2022-11-02 20:03:16,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:03:16,783 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:03:16,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:16,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1696851422, now seen corresponding path program 1 times [2022-11-02 20:03:16,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:16,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176260678] [2022-11-02 20:03:16,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:16,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:17,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:03:17,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:17,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176260678] [2022-11-02 20:03:17,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176260678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:03:17,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:03:17,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:03:17,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396794571] [2022-11-02 20:03:17,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:03:17,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:03:17,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:17,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:03:17,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:03:17,083 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2022-11-02 20:03:17,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 105 transitions, 400 flow. Second operand has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:17,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:03:17,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2022-11-02 20:03:17,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:03:17,303 INFO L130 PetriNetUnfolder]: 106/371 cut-off events. [2022-11-02 20:03:17,303 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2022-11-02 20:03:17,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 920 conditions, 371 events. 106/371 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1575 event pairs, 17 based on Foata normal form. 4/347 useless extension candidates. Maximal degree in co-relation 762. Up to 75 conditions per place. [2022-11-02 20:03:17,307 INFO L137 encePairwiseOnDemand]: 93/104 looper letters, 47 selfloop transitions, 16 changer transitions 0/124 dead transitions. [2022-11-02 20:03:17,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 124 transitions, 634 flow [2022-11-02 20:03:17,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:03:17,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:03:17,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 531 transitions. [2022-11-02 20:03:17,310 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7293956043956044 [2022-11-02 20:03:17,310 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 531 transitions. [2022-11-02 20:03:17,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 531 transitions. [2022-11-02 20:03:17,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:03:17,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 531 transitions. [2022-11-02 20:03:17,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:17,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:17,320 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:17,320 INFO L175 Difference]: Start difference. First operand has 114 places, 105 transitions, 400 flow. Second operand 7 states and 531 transitions. [2022-11-02 20:03:17,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 124 transitions, 634 flow [2022-11-02 20:03:17,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 124 transitions, 606 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-02 20:03:17,329 INFO L231 Difference]: Finished difference. Result has 119 places, 110 transitions, 478 flow [2022-11-02 20:03:17,329 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=478, PETRI_PLACES=119, PETRI_TRANSITIONS=110} [2022-11-02 20:03:17,331 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 27 predicate places. [2022-11-02 20:03:17,332 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 110 transitions, 478 flow [2022-11-02 20:03:17,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:17,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:03:17,333 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] [2022-11-02 20:03:17,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:03:17,333 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:03:17,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:17,334 INFO L85 PathProgramCache]: Analyzing trace with hash -147861111, now seen corresponding path program 1 times [2022-11-02 20:03:17,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:17,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320041213] [2022-11-02 20:03:17,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:17,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:17,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:03:17,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:17,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320041213] [2022-11-02 20:03:17,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320041213] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:03:17,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252054150] [2022-11-02 20:03:17,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:17,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:03:17,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:03:17,776 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:03:17,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:03:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:17,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:03:17,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:03:18,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:03:18,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:03:18,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:03:18,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252054150] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:03:18,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:03:18,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-11-02 20:03:18,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454178276] [2022-11-02 20:03:18,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:03:18,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:03:18,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:18,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:03:18,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:03:18,873 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 104 [2022-11-02 20:03:18,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 110 transitions, 478 flow. Second operand has 18 states, 18 states have (on average 74.55555555555556) internal successors, (1342), 18 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:18,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:03:18,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 104 [2022-11-02 20:03:18,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:03:19,416 INFO L130 PetriNetUnfolder]: 126/445 cut-off events. [2022-11-02 20:03:19,416 INFO L131 PetriNetUnfolder]: For 1337/1421 co-relation queries the response was YES. [2022-11-02 20:03:19,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1240 conditions, 445 events. 126/445 cut-off events. For 1337/1421 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1986 event pairs, 18 based on Foata normal form. 14/417 useless extension candidates. Maximal degree in co-relation 834. Up to 81 conditions per place. [2022-11-02 20:03:19,421 INFO L137 encePairwiseOnDemand]: 93/104 looper letters, 55 selfloop transitions, 21 changer transitions 0/145 dead transitions. [2022-11-02 20:03:19,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 145 transitions, 891 flow [2022-11-02 20:03:19,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:03:19,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:03:19,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 847 transitions. [2022-11-02 20:03:19,424 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7403846153846154 [2022-11-02 20:03:19,424 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 847 transitions. [2022-11-02 20:03:19,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 847 transitions. [2022-11-02 20:03:19,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:03:19,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 847 transitions. [2022-11-02 20:03:19,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 77.0) internal successors, (847), 11 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:19,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:19,435 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:19,435 INFO L175 Difference]: Start difference. First operand has 119 places, 110 transitions, 478 flow. Second operand 11 states and 847 transitions. [2022-11-02 20:03:19,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 145 transitions, 891 flow [2022-11-02 20:03:19,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 145 transitions, 860 flow, removed 11 selfloop flow, removed 3 redundant places. [2022-11-02 20:03:19,445 INFO L231 Difference]: Finished difference. Result has 130 places, 119 transitions, 610 flow [2022-11-02 20:03:19,445 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=610, PETRI_PLACES=130, PETRI_TRANSITIONS=119} [2022-11-02 20:03:19,448 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 38 predicate places. [2022-11-02 20:03:19,448 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 119 transitions, 610 flow [2022-11-02 20:03:19,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 74.55555555555556) internal successors, (1342), 18 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:19,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:03:19,449 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:03:19,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:03:19,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:03:19,674 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:03:19,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:19,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1084709584, now seen corresponding path program 1 times [2022-11-02 20:03:19,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:19,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800655513] [2022-11-02 20:03:19,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:19,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:19,858 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:03:19,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:19,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800655513] [2022-11-02 20:03:19,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800655513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:03:19,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:03:19,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:03:19,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6845574] [2022-11-02 20:03:19,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:03:19,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:03:19,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:19,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:03:19,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:03:19,862 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2022-11-02 20:03:19,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 119 transitions, 610 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:19,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:03:19,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2022-11-02 20:03:19,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:03:20,050 INFO L130 PetriNetUnfolder]: 171/876 cut-off events. [2022-11-02 20:03:20,050 INFO L131 PetriNetUnfolder]: For 1747/1782 co-relation queries the response was YES. [2022-11-02 20:03:20,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2144 conditions, 876 events. 171/876 cut-off events. For 1747/1782 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 6009 event pairs, 39 based on Foata normal form. 13/805 useless extension candidates. Maximal degree in co-relation 1316. Up to 147 conditions per place. [2022-11-02 20:03:20,060 INFO L137 encePairwiseOnDemand]: 99/104 looper letters, 19 selfloop transitions, 5 changer transitions 0/130 dead transitions. [2022-11-02 20:03:20,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 130 transitions, 688 flow [2022-11-02 20:03:20,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:03:20,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 20:03:20,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2022-11-02 20:03:20,063 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9038461538461539 [2022-11-02 20:03:20,063 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2022-11-02 20:03:20,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2022-11-02 20:03:20,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:03:20,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2022-11-02 20:03:20,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:20,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:20,066 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:20,067 INFO L175 Difference]: Start difference. First operand has 130 places, 119 transitions, 610 flow. Second operand 4 states and 376 transitions. [2022-11-02 20:03:20,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 130 transitions, 688 flow [2022-11-02 20:03:20,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 130 transitions, 677 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-02 20:03:20,076 INFO L231 Difference]: Finished difference. Result has 132 places, 122 transitions, 633 flow [2022-11-02 20:03:20,076 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=633, PETRI_PLACES=132, PETRI_TRANSITIONS=122} [2022-11-02 20:03:20,077 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 40 predicate places. [2022-11-02 20:03:20,077 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 122 transitions, 633 flow [2022-11-02 20:03:20,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:20,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:03:20,082 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:03:20,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:03:20,083 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:03:20,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:20,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1246404766, now seen corresponding path program 1 times [2022-11-02 20:03:20,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:20,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749841326] [2022-11-02 20:03:20,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:20,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:20,568 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:03:20,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:20,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749841326] [2022-11-02 20:03:20,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749841326] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:03:20,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139994397] [2022-11-02 20:03:20,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:20,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:03:20,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:03:20,571 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:03:20,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:03:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:20,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:03:20,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:03:21,110 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:03:21,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:03:21,732 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:03:21,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139994397] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:03:21,733 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:03:21,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-11-02 20:03:21,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424706829] [2022-11-02 20:03:21,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:03:21,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:03:21,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:21,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:03:21,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:03:21,737 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 104 [2022-11-02 20:03:21,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 122 transitions, 633 flow. Second operand has 18 states, 18 states have (on average 71.11111111111111) internal successors, (1280), 18 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:21,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:03:21,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 104 [2022-11-02 20:03:21,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:03:22,770 INFO L130 PetriNetUnfolder]: 600/1750 cut-off events. [2022-11-02 20:03:22,771 INFO L131 PetriNetUnfolder]: For 5756/5776 co-relation queries the response was YES. [2022-11-02 20:03:22,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5435 conditions, 1750 events. 600/1750 cut-off events. For 5756/5776 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 12462 event pairs, 37 based on Foata normal form. 54/1697 useless extension candidates. Maximal degree in co-relation 4520. Up to 309 conditions per place. [2022-11-02 20:03:22,791 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 110 selfloop transitions, 23 changer transitions 0/197 dead transitions. [2022-11-02 20:03:22,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 197 transitions, 1479 flow [2022-11-02 20:03:22,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:03:22,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-02 20:03:22,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 973 transitions. [2022-11-02 20:03:22,795 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7196745562130178 [2022-11-02 20:03:22,795 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 973 transitions. [2022-11-02 20:03:22,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 973 transitions. [2022-11-02 20:03:22,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:03:22,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 973 transitions. [2022-11-02 20:03:22,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.84615384615384) internal successors, (973), 13 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:22,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 104.0) internal successors, (1456), 14 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:22,803 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 104.0) internal successors, (1456), 14 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:22,803 INFO L175 Difference]: Start difference. First operand has 132 places, 122 transitions, 633 flow. Second operand 13 states and 973 transitions. [2022-11-02 20:03:22,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 197 transitions, 1479 flow [2022-11-02 20:03:22,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 197 transitions, 1479 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:03:22,818 INFO L231 Difference]: Finished difference. Result has 149 places, 131 transitions, 781 flow [2022-11-02 20:03:22,819 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=781, PETRI_PLACES=149, PETRI_TRANSITIONS=131} [2022-11-02 20:03:22,821 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 57 predicate places. [2022-11-02 20:03:22,822 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 131 transitions, 781 flow [2022-11-02 20:03:22,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 71.11111111111111) internal successors, (1280), 18 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:22,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:03:22,823 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:03:22,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-02 20:03:23,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-02 20:03:23,028 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:03:23,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:23,029 INFO L85 PathProgramCache]: Analyzing trace with hash -523020228, now seen corresponding path program 1 times [2022-11-02 20:03:23,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:23,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935936270] [2022-11-02 20:03:23,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:23,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:23,250 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:03:23,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:23,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935936270] [2022-11-02 20:03:23,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935936270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:03:23,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:03:23,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:03:23,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989237924] [2022-11-02 20:03:23,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:03:23,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:03:23,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:23,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:03:23,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:03:23,253 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2022-11-02 20:03:23,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 131 transitions, 781 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:23,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:03:23,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2022-11-02 20:03:23,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:03:23,769 INFO L130 PetriNetUnfolder]: 538/2495 cut-off events. [2022-11-02 20:03:23,769 INFO L131 PetriNetUnfolder]: For 6946/6984 co-relation queries the response was YES. [2022-11-02 20:03:23,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7379 conditions, 2495 events. 538/2495 cut-off events. For 6946/6984 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 23329 event pairs, 131 based on Foata normal form. 26/2405 useless extension candidates. Maximal degree in co-relation 5897. Up to 416 conditions per place. [2022-11-02 20:03:23,799 INFO L137 encePairwiseOnDemand]: 99/104 looper letters, 22 selfloop transitions, 5 changer transitions 0/145 dead transitions. [2022-11-02 20:03:23,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 145 transitions, 879 flow [2022-11-02 20:03:23,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:03:23,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 20:03:23,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2022-11-02 20:03:23,801 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.90625 [2022-11-02 20:03:23,801 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2022-11-02 20:03:23,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2022-11-02 20:03:23,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:03:23,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2022-11-02 20:03:23,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:23,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:23,804 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:23,804 INFO L175 Difference]: Start difference. First operand has 149 places, 131 transitions, 781 flow. Second operand 4 states and 377 transitions. [2022-11-02 20:03:23,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 145 transitions, 879 flow [2022-11-02 20:03:23,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 145 transitions, 861 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-02 20:03:23,830 INFO L231 Difference]: Finished difference. Result has 149 places, 134 transitions, 797 flow [2022-11-02 20:03:23,830 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=797, PETRI_PLACES=149, PETRI_TRANSITIONS=134} [2022-11-02 20:03:23,831 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 57 predicate places. [2022-11-02 20:03:23,831 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 134 transitions, 797 flow [2022-11-02 20:03:23,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:23,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:03:23,831 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:03:23,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:03:23,832 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:03:23,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:23,832 INFO L85 PathProgramCache]: Analyzing trace with hash -2010027838, now seen corresponding path program 1 times [2022-11-02 20:03:23,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:23,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868762791] [2022-11-02 20:03:23,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:23,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:24,069 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:03:24,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:24,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868762791] [2022-11-02 20:03:24,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868762791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:03:24,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:03:24,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:03:24,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704134767] [2022-11-02 20:03:24,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:03:24,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:03:24,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:24,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:03:24,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:03:24,073 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2022-11-02 20:03:24,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 134 transitions, 797 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:24,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:03:24,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2022-11-02 20:03:24,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:03:24,448 INFO L130 PetriNetUnfolder]: 225/1601 cut-off events. [2022-11-02 20:03:24,448 INFO L131 PetriNetUnfolder]: For 5211/5326 co-relation queries the response was YES. [2022-11-02 20:03:24,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5129 conditions, 1601 events. 225/1601 cut-off events. For 5211/5326 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 14017 event pairs, 61 based on Foata normal form. 50/1616 useless extension candidates. Maximal degree in co-relation 2754. Up to 213 conditions per place. [2022-11-02 20:03:24,470 INFO L137 encePairwiseOnDemand]: 100/104 looper letters, 18 selfloop transitions, 6 changer transitions 0/142 dead transitions. [2022-11-02 20:03:24,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 142 transitions, 877 flow [2022-11-02 20:03:24,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:03:24,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 20:03:24,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 373 transitions. [2022-11-02 20:03:24,472 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8966346153846154 [2022-11-02 20:03:24,472 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 373 transitions. [2022-11-02 20:03:24,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 373 transitions. [2022-11-02 20:03:24,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:03:24,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 373 transitions. [2022-11-02 20:03:24,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:24,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:24,474 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:24,475 INFO L175 Difference]: Start difference. First operand has 149 places, 134 transitions, 797 flow. Second operand 4 states and 373 transitions. [2022-11-02 20:03:24,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 142 transitions, 877 flow [2022-11-02 20:03:24,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 142 transitions, 877 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:03:24,492 INFO L231 Difference]: Finished difference. Result has 154 places, 136 transitions, 833 flow [2022-11-02 20:03:24,493 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=833, PETRI_PLACES=154, PETRI_TRANSITIONS=136} [2022-11-02 20:03:24,493 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 62 predicate places. [2022-11-02 20:03:24,493 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 136 transitions, 833 flow [2022-11-02 20:03:24,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:24,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:03:24,494 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:03:24,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:03:24,494 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:03:24,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:24,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1771021536, now seen corresponding path program 1 times [2022-11-02 20:03:24,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:24,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104044736] [2022-11-02 20:03:24,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:24,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:25,075 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:03:25,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:25,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104044736] [2022-11-02 20:03:25,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104044736] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:03:25,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894518385] [2022-11-02 20:03:25,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:25,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:03:25,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:03:25,079 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:03:25,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:03:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:25,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:03:25,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:03:25,444 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:25,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:03:25,661 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:25,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894518385] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:03:25,661 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:03:25,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 14 [2022-11-02 20:03:25,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248255081] [2022-11-02 20:03:25,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:03:25,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:03:25,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:25,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:03:25,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:03:25,665 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 104 [2022-11-02 20:03:25,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 136 transitions, 833 flow. Second operand has 14 states, 14 states have (on average 70.35714285714286) internal successors, (985), 14 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:25,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:03:25,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 104 [2022-11-02 20:03:25,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:03:27,333 INFO L130 PetriNetUnfolder]: 1518/4687 cut-off events. [2022-11-02 20:03:27,333 INFO L131 PetriNetUnfolder]: For 22925/23019 co-relation queries the response was YES. [2022-11-02 20:03:27,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18190 conditions, 4687 events. 1518/4687 cut-off events. For 22925/23019 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 42919 event pairs, 415 based on Foata normal form. 96/4772 useless extension candidates. Maximal degree in co-relation 6960. Up to 1927 conditions per place. [2022-11-02 20:03:27,399 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 168 selfloop transitions, 21 changer transitions 4/260 dead transitions. [2022-11-02 20:03:27,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 260 transitions, 2340 flow [2022-11-02 20:03:27,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:03:27,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:03:27,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 763 transitions. [2022-11-02 20:03:27,402 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7336538461538461 [2022-11-02 20:03:27,403 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 763 transitions. [2022-11-02 20:03:27,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 763 transitions. [2022-11-02 20:03:27,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:03:27,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 763 transitions. [2022-11-02 20:03:27,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 76.3) internal successors, (763), 10 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:27,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:27,409 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:27,409 INFO L175 Difference]: Start difference. First operand has 154 places, 136 transitions, 833 flow. Second operand 10 states and 763 transitions. [2022-11-02 20:03:27,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 260 transitions, 2340 flow [2022-11-02 20:03:27,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 260 transitions, 2340 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:03:27,467 INFO L231 Difference]: Finished difference. Result has 166 places, 148 transitions, 945 flow [2022-11-02 20:03:27,467 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=945, PETRI_PLACES=166, PETRI_TRANSITIONS=148} [2022-11-02 20:03:27,468 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 74 predicate places. [2022-11-02 20:03:27,468 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 148 transitions, 945 flow [2022-11-02 20:03:27,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 70.35714285714286) internal successors, (985), 14 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:27,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:03:27,469 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:03:27,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:03:27,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 20:03:27,694 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:03:27,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:27,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1102264492, now seen corresponding path program 2 times [2022-11-02 20:03:27,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:27,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277784583] [2022-11-02 20:03:27,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:27,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:28,127 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:28,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:28,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277784583] [2022-11-02 20:03:28,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277784583] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:03:28,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818084345] [2022-11-02 20:03:28,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:03:28,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:03:28,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:03:28,129 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:03:28,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:03:28,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:03:28,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:03:28,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:03:28,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:03:28,446 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:28,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:03:28,607 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:28,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818084345] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:03:28,608 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:03:28,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-11-02 20:03:28,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320552709] [2022-11-02 20:03:28,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:03:28,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:03:28,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:28,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:03:28,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:03:28,611 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-02 20:03:28,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 148 transitions, 945 flow. Second operand has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:28,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:03:28,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-02 20:03:28,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:03:29,602 INFO L130 PetriNetUnfolder]: 454/2872 cut-off events. [2022-11-02 20:03:29,602 INFO L131 PetriNetUnfolder]: For 10755/11073 co-relation queries the response was YES. [2022-11-02 20:03:29,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9795 conditions, 2872 events. 454/2872 cut-off events. For 10755/11073 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 28122 event pairs, 73 based on Foata normal form. 87/2905 useless extension candidates. Maximal degree in co-relation 9696. Up to 505 conditions per place. [2022-11-02 20:03:29,655 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 40 selfloop transitions, 24 changer transitions 4/182 dead transitions. [2022-11-02 20:03:29,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 182 transitions, 1234 flow [2022-11-02 20:03:29,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:03:29,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:03:29,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 844 transitions. [2022-11-02 20:03:29,659 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8115384615384615 [2022-11-02 20:03:29,659 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 844 transitions. [2022-11-02 20:03:29,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 844 transitions. [2022-11-02 20:03:29,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:03:29,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 844 transitions. [2022-11-02 20:03:29,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.4) internal successors, (844), 10 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:29,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:29,666 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:29,666 INFO L175 Difference]: Start difference. First operand has 166 places, 148 transitions, 945 flow. Second operand 10 states and 844 transitions. [2022-11-02 20:03:29,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 182 transitions, 1234 flow [2022-11-02 20:03:29,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 182 transitions, 1146 flow, removed 37 selfloop flow, removed 6 redundant places. [2022-11-02 20:03:29,715 INFO L231 Difference]: Finished difference. Result has 172 places, 162 transitions, 1053 flow [2022-11-02 20:03:29,716 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1053, PETRI_PLACES=172, PETRI_TRANSITIONS=162} [2022-11-02 20:03:29,716 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 80 predicate places. [2022-11-02 20:03:29,716 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 162 transitions, 1053 flow [2022-11-02 20:03:29,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:29,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:03:29,717 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:03:29,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:03:29,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:03:29,931 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:03:29,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:29,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2008868854, now seen corresponding path program 3 times [2022-11-02 20:03:29,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:29,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575766467] [2022-11-02 20:03:29,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:29,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:30,393 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:30,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:30,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575766467] [2022-11-02 20:03:30,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575766467] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:03:30,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93048596] [2022-11-02 20:03:30,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:03:30,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:03:30,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:03:30,396 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:03:30,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:03:30,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-02 20:03:30,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:03:30,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:03:30,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:03:30,789 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:30,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:03:30,954 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:30,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93048596] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:03:30,954 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:03:30,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-11-02 20:03:30,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174741884] [2022-11-02 20:03:30,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:03:30,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:03:30,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:30,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:03:30,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:03:30,957 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-02 20:03:30,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 162 transitions, 1053 flow. Second operand has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:30,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:03:30,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-02 20:03:30,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:03:32,303 INFO L130 PetriNetUnfolder]: 568/3659 cut-off events. [2022-11-02 20:03:32,304 INFO L131 PetriNetUnfolder]: For 13765/14117 co-relation queries the response was YES. [2022-11-02 20:03:32,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12403 conditions, 3659 events. 568/3659 cut-off events. For 13765/14117 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 38266 event pairs, 65 based on Foata normal form. 142/3743 useless extension candidates. Maximal degree in co-relation 12276. Up to 405 conditions per place. [2022-11-02 20:03:32,359 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 35 selfloop transitions, 48 changer transitions 4/201 dead transitions. [2022-11-02 20:03:32,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 201 transitions, 1398 flow [2022-11-02 20:03:32,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:03:32,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:03:32,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 934 transitions. [2022-11-02 20:03:32,364 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8164335664335665 [2022-11-02 20:03:32,364 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 934 transitions. [2022-11-02 20:03:32,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 934 transitions. [2022-11-02 20:03:32,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:03:32,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 934 transitions. [2022-11-02 20:03:32,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 84.9090909090909) internal successors, (934), 11 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:32,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:32,372 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:32,372 INFO L175 Difference]: Start difference. First operand has 172 places, 162 transitions, 1053 flow. Second operand 11 states and 934 transitions. [2022-11-02 20:03:32,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 201 transitions, 1398 flow [2022-11-02 20:03:32,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 201 transitions, 1363 flow, removed 13 selfloop flow, removed 5 redundant places. [2022-11-02 20:03:32,415 INFO L231 Difference]: Finished difference. Result has 178 places, 175 transitions, 1243 flow [2022-11-02 20:03:32,416 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1243, PETRI_PLACES=178, PETRI_TRANSITIONS=175} [2022-11-02 20:03:32,417 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 86 predicate places. [2022-11-02 20:03:32,417 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 175 transitions, 1243 flow [2022-11-02 20:03:32,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:32,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:03:32,418 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:03:32,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:03:32,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:03:32,624 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:03:32,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:32,624 INFO L85 PathProgramCache]: Analyzing trace with hash 845955974, now seen corresponding path program 4 times [2022-11-02 20:03:32,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:32,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535514031] [2022-11-02 20:03:32,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:32,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:33,030 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:33,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:33,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535514031] [2022-11-02 20:03:33,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535514031] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:03:33,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805219154] [2022-11-02 20:03:33,031 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:03:33,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:03:33,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:03:33,032 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:03:33,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:03:33,119 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:03:33,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:03:33,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:03:33,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:03:33,338 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:33,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:03:33,502 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:33,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805219154] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:03:33,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:03:33,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-11-02 20:03:33,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422439913] [2022-11-02 20:03:33,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:03:33,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:03:33,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:33,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:03:33,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:03:33,506 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-02 20:03:33,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 175 transitions, 1243 flow. Second operand has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:33,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:03:33,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-02 20:03:33,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:03:34,463 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([247] L42-1-->L42-2: Formula: (not (< (mod v_~i1~0_1 4294967296) (mod (* 2 v_~N~0_1) 4294967296))) InVars {~i1~0=v_~i1~0_1, ~N~0=v_~N~0_1} OutVars{~i1~0=v_~i1~0_1, ~N~0=v_~N~0_1} AuxVars[] AssignedVars[][97], [608#(<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ ~i1~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)))), Black: 640#(and (<= (+ ~i1~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), 1173#(and (<= (div ~d1~0 256) 0) (<= 1 ~d1~0)), 1759#(not (= (* 256 (div ~d1~0 256)) ~d1~0)), Black: 636#(<= (+ ~i1~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), 1178#true, Black: 1160#(and (<= ~i1~0 (* 4294967296 (div ~i1~0 4294967296))) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), 618#true, Black: 842#(and (<= ~i1~0 (+ (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1183#(and (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1164#(and (<= ~i1~0 (+ (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0) (<= |thread1Thread1of1ForFork0_#t~post3| (* (div |thread1Thread1of1ForFork0_#t~post3| 4294967296) 4294967296))), Black: 1739#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (<= |thread2Thread1of1ForFork1_#t~post4| (* (div |thread2Thread1of1ForFork1_#t~post4| 4294967296) 4294967296)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1393#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1735#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 2373#(<= (+ ~pos~0 1) (* (div (+ ~pos~0 1) 4294967296) 4294967296)), Black: 2374#(<= ~pos~0 (+ (* (div (+ (- 2) ~pos~0) 4294967296) 4294967296) 2)), Black: 592#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 2372#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 131#(<= (+ ~i2~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)) 1) (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296))), 1764#true, Black: 1172#(= (* 256 (div ~d1~0 256)) ~d1~0), Black: 1170#true, Black: 279#(and (< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296)) (= (mod ~i2~0 4294967296) 0)), Black: 594#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 1752#(and (<= (div ~d2~0 256) 0) (<= 1 ~d2~0)), Black: 1749#true, 126#true, Black: 1757#true, Black: 1760#(and (not (<= (+ (div ~d1~0 256) 1) 0)) (<= ~d1~0 (* 256 (div ~d1~0 256)))), 2969#true, Black: 610#(and (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0)) (<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ ~i1~0 (* 4294967296 (div (* 2 ~N~0) 4294967296))))), 6#L94-4true, Black: 607#(<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0)), 100#L42-2true, 631#true, Black: 2973#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 3564#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 3562#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 74#L73-2true, 645#true, Black: 623#(<= (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)) (+ ~i2~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)))), Black: 627#(and (<= (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)) (+ ~i2~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), 1751#(= (* (div ~d2~0 256) 256) ~d2~0), 3569#true, Black: 1771#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), 2368#true]) [2022-11-02 20:03:34,463 INFO L383 tUnfolder$Statistics]: this new event has 97 ancestors and is cut-off event [2022-11-02 20:03:34,463 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is cut-off event [2022-11-02 20:03:34,464 INFO L386 tUnfolder$Statistics]: existing Event has 83 ancestors and is cut-off event [2022-11-02 20:03:34,464 INFO L386 tUnfolder$Statistics]: existing Event has 83 ancestors and is cut-off event [2022-11-02 20:03:34,497 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([260] L61-1-->L61-2: Formula: (not (< (mod v_~i2~0_1 4294967296) (mod (* 2 v_~N~0_3) 4294967296))) InVars {~i2~0=v_~i2~0_1, ~N~0=v_~N~0_3} OutVars{~i2~0=v_~i2~0_1, ~N~0=v_~N~0_3} AuxVars[] AssignedVars[][135], [1173#(and (<= (div ~d1~0 256) 0) (<= 1 ~d1~0)), Black: 640#(and (<= (+ ~i1~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), 1759#(not (= (* 256 (div ~d1~0 256)) ~d1~0)), Black: 636#(<= (+ ~i1~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), 1178#true, Black: 1160#(and (<= ~i1~0 (* 4294967296 (div ~i1~0 4294967296))) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1183#(and (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 842#(and (<= ~i1~0 (+ (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1739#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (<= |thread2Thread1of1ForFork1_#t~post4| (* (div |thread2Thread1of1ForFork1_#t~post4| 4294967296) 4294967296)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1164#(and (<= ~i1~0 (+ (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0) (<= |thread1Thread1of1ForFork0_#t~post3| (* (div |thread1Thread1of1ForFork0_#t~post3| 4294967296) 4294967296))), Black: 1393#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1735#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 2373#(<= (+ ~pos~0 1) (* (div (+ ~pos~0 1) 4294967296) 4294967296)), 603#true, Black: 2374#(<= ~pos~0 (+ (* (div (+ (- 2) ~pos~0) 4294967296) 4294967296) 2)), Black: 592#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 2372#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 131#(<= (+ ~i2~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)) 1) (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296))), 1764#true, Black: 1172#(= (* 256 (div ~d1~0 256)) ~d1~0), Black: 1170#true, Black: 279#(and (< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296)) (= (mod ~i2~0 4294967296) 0)), Black: 594#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 1752#(and (<= (div ~d2~0 256) 0) (<= 1 ~d2~0)), Black: 1749#true, 126#true, Black: 1757#true, 623#(<= (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)) (+ ~i2~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)))), Black: 1760#(and (not (<= (+ (div ~d1~0 256) 1) 0)) (<= ~d1~0 (* 256 (div ~d1~0 256)))), 2969#true, Black: 608#(<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ ~i1~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)))), Black: 610#(and (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0)) (<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ ~i1~0 (* 4294967296 (div (* 2 ~N~0) 4294967296))))), 6#L94-4true, Black: 607#(<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0)), 631#true, 52#L61-2true, Black: 2973#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 3564#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 3562#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 645#true, Black: 627#(and (<= (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)) (+ ~i2~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), 28#L54-2true, 1751#(= (* (div ~d2~0 256) 256) ~d2~0), 3569#true, Black: 1771#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), 2368#true]) [2022-11-02 20:03:34,498 INFO L383 tUnfolder$Statistics]: this new event has 97 ancestors and is cut-off event [2022-11-02 20:03:34,498 INFO L386 tUnfolder$Statistics]: existing Event has 83 ancestors and is cut-off event [2022-11-02 20:03:34,498 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is cut-off event [2022-11-02 20:03:34,498 INFO L386 tUnfolder$Statistics]: existing Event has 83 ancestors and is cut-off event [2022-11-02 20:03:34,511 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([247] L42-1-->L42-2: Formula: (not (< (mod v_~i1~0_1 4294967296) (mod (* 2 v_~N~0_1) 4294967296))) InVars {~i1~0=v_~i1~0_1, ~N~0=v_~N~0_1} OutVars{~i1~0=v_~i1~0_1, ~N~0=v_~N~0_1} AuxVars[] AssignedVars[][140], [608#(<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ ~i1~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)))), 1173#(and (<= (div ~d1~0 256) 0) (<= 1 ~d1~0)), Black: 640#(and (<= (+ ~i1~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), 1759#(not (= (* 256 (div ~d1~0 256)) ~d1~0)), Black: 636#(<= (+ ~i1~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)) 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), Black: 1160#(and (<= ~i1~0 (* 4294967296 (div ~i1~0 4294967296))) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), 618#true, Black: 842#(and (<= ~i1~0 (+ (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1183#(and (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1739#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (<= |thread2Thread1of1ForFork1_#t~post4| (* (div |thread2Thread1of1ForFork1_#t~post4| 4294967296) 4294967296)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1164#(and (<= ~i1~0 (+ (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0) (<= |thread1Thread1of1ForFork0_#t~post3| (* (div |thread1Thread1of1ForFork0_#t~post3| 4294967296) 4294967296))), Black: 1393#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 1178#true, Black: 1735#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0) (< (* (div (* 2 ~N~0) 4294967296) 2147483648) ~N~0)), Black: 2373#(<= (+ ~pos~0 1) (* (div (+ ~pos~0 1) 4294967296) 4294967296)), Black: 2374#(<= ~pos~0 (+ (* (div (+ (- 2) ~pos~0) 4294967296) 4294967296) 2)), Black: 592#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 2372#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 131#(<= (+ ~i2~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)) 1) (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296))), 1764#true, Black: 1172#(= (* 256 (div ~d1~0 256)) ~d1~0), Black: 126#true, Black: 1170#true, Black: 279#(and (< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296)) (= (mod ~i2~0 4294967296) 0)), Black: 594#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 1752#(and (<= (div ~d2~0 256) 0) (<= 1 ~d2~0)), Black: 1749#true, 596#(and (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0)) (<= (+ ~i2~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)) 1) (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)))), Black: 1757#true, Black: 1760#(and (not (<= (+ (div ~d1~0 256) 1) 0)) (<= ~d1~0 (* 256 (div ~d1~0 256)))), 2969#true, Black: 610#(and (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0)) (<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ ~i1~0 (* 4294967296 (div (* 2 ~N~0) 4294967296))))), 6#L94-4true, Black: 607#(<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0)), 100#L42-2true, 631#true, Black: 2973#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 3564#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 3562#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 25#L62true, 645#true, Black: 623#(<= (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)) (+ ~i2~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)))), Black: 627#(and (<= (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)) (+ ~i2~0 (* 4294967296 (div (* 2 ~N~0) 4294967296)))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), 1751#(= (* (div ~d2~0 256) 256) ~d2~0), 3569#true, Black: 1771#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), 2368#true, 1520#(< (mod ~i2~0 4294967296) (mod (* 2 ~N~0) 4294967296))]) [2022-11-02 20:03:34,511 INFO L383 tUnfolder$Statistics]: this new event has 99 ancestors and is cut-off event [2022-11-02 20:03:34,512 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-11-02 20:03:34,512 INFO L386 tUnfolder$Statistics]: existing Event has 85 ancestors and is cut-off event [2022-11-02 20:03:34,512 INFO L386 tUnfolder$Statistics]: existing Event has 85 ancestors and is cut-off event [2022-11-02 20:03:34,606 INFO L130 PetriNetUnfolder]: 637/4067 cut-off events. [2022-11-02 20:03:34,606 INFO L131 PetriNetUnfolder]: For 17210/17675 co-relation queries the response was YES. [2022-11-02 20:03:34,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14427 conditions, 4067 events. 637/4067 cut-off events. For 17210/17675 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 43526 event pairs, 110 based on Foata normal form. 130/4114 useless extension candidates. Maximal degree in co-relation 14288. Up to 753 conditions per place. [2022-11-02 20:03:34,666 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 62 selfloop transitions, 21 changer transitions 4/201 dead transitions. [2022-11-02 20:03:34,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 201 transitions, 1542 flow [2022-11-02 20:03:34,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:03:34,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:03:34,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 841 transitions. [2022-11-02 20:03:34,668 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8086538461538462 [2022-11-02 20:03:34,668 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 841 transitions. [2022-11-02 20:03:34,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 841 transitions. [2022-11-02 20:03:34,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:03:34,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 841 transitions. [2022-11-02 20:03:34,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.1) internal successors, (841), 10 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:34,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:34,673 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:34,674 INFO L175 Difference]: Start difference. First operand has 178 places, 175 transitions, 1243 flow. Second operand 10 states and 841 transitions. [2022-11-02 20:03:34,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 201 transitions, 1542 flow [2022-11-02 20:03:34,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 201 transitions, 1435 flow, removed 43 selfloop flow, removed 6 redundant places. [2022-11-02 20:03:34,734 INFO L231 Difference]: Finished difference. Result has 183 places, 181 transitions, 1275 flow [2022-11-02 20:03:34,735 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1275, PETRI_PLACES=183, PETRI_TRANSITIONS=181} [2022-11-02 20:03:34,735 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 91 predicate places. [2022-11-02 20:03:34,736 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 181 transitions, 1275 flow [2022-11-02 20:03:34,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:34,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:03:34,736 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:03:34,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:03:34,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:03:34,950 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:03:34,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:34,951 INFO L85 PathProgramCache]: Analyzing trace with hash -2139138392, now seen corresponding path program 5 times [2022-11-02 20:03:34,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:34,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795637236] [2022-11-02 20:03:34,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:34,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:35,332 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:03:35,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:35,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795637236] [2022-11-02 20:03:35,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795637236] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:03:35,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813181539] [2022-11-02 20:03:35,333 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:03:35,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:03:35,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:03:35,334 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:03:35,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:03:35,471 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-02 20:03:35,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:03:35,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:03:35,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:03:35,672 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:03:35,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:03:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:03:35,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813181539] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:03:35,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:03:35,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-11-02 20:03:35,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065410300] [2022-11-02 20:03:35,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:03:35,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:03:35,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:35,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:03:35,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:03:35,845 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-02 20:03:35,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 181 transitions, 1275 flow. Second operand has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:35,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:03:35,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-02 20:03:35,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:03:37,185 INFO L130 PetriNetUnfolder]: 706/4702 cut-off events. [2022-11-02 20:03:37,185 INFO L131 PetriNetUnfolder]: For 18811/19290 co-relation queries the response was YES. [2022-11-02 20:03:37,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16139 conditions, 4702 events. 706/4702 cut-off events. For 18811/19290 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 52683 event pairs, 121 based on Foata normal form. 147/4760 useless extension candidates. Maximal degree in co-relation 15978. Up to 827 conditions per place. [2022-11-02 20:03:37,257 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 68 selfloop transitions, 25 changer transitions 4/211 dead transitions. [2022-11-02 20:03:37,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 211 transitions, 1600 flow [2022-11-02 20:03:37,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:03:37,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:03:37,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 844 transitions. [2022-11-02 20:03:37,260 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8115384615384615 [2022-11-02 20:03:37,260 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 844 transitions. [2022-11-02 20:03:37,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 844 transitions. [2022-11-02 20:03:37,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:03:37,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 844 transitions. [2022-11-02 20:03:37,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.4) internal successors, (844), 10 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:37,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:37,265 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:37,265 INFO L175 Difference]: Start difference. First operand has 183 places, 181 transitions, 1275 flow. Second operand 10 states and 844 transitions. [2022-11-02 20:03:37,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 211 transitions, 1600 flow [2022-11-02 20:03:37,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 211 transitions, 1573 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-11-02 20:03:37,326 INFO L231 Difference]: Finished difference. Result has 188 places, 191 transitions, 1393 flow [2022-11-02 20:03:37,326 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1393, PETRI_PLACES=188, PETRI_TRANSITIONS=191} [2022-11-02 20:03:37,327 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 96 predicate places. [2022-11-02 20:03:37,327 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 191 transitions, 1393 flow [2022-11-02 20:03:37,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:37,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:03:37,328 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:03:37,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:03:37,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:03:37,533 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:03:37,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:37,533 INFO L85 PathProgramCache]: Analyzing trace with hash 866828328, now seen corresponding path program 6 times [2022-11-02 20:03:37,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:37,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864368708] [2022-11-02 20:03:37,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:37,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:37,895 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:37,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:37,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864368708] [2022-11-02 20:03:37,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864368708] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:03:37,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11171351] [2022-11-02 20:03:37,895 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 20:03:37,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:03:37,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:03:37,899 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:03:37,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:03:38,107 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-02 20:03:38,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:03:38,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:03:38,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:03:38,327 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:38,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:03:38,489 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:38,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11171351] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:03:38,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:03:38,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-11-02 20:03:38,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696147711] [2022-11-02 20:03:38,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:03:38,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:03:38,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:38,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:03:38,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:03:38,493 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-02 20:03:38,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 191 transitions, 1393 flow. Second operand has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:38,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:03:38,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-02 20:03:38,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:03:39,850 INFO L130 PetriNetUnfolder]: 753/5097 cut-off events. [2022-11-02 20:03:39,850 INFO L131 PetriNetUnfolder]: For 21576/22163 co-relation queries the response was YES. [2022-11-02 20:03:39,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17781 conditions, 5097 events. 753/5097 cut-off events. For 21576/22163 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 58594 event pairs, 120 based on Foata normal form. 197/5205 useless extension candidates. Maximal degree in co-relation 17603. Up to 725 conditions per place. [2022-11-02 20:03:39,934 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 68 selfloop transitions, 39 changer transitions 4/225 dead transitions. [2022-11-02 20:03:39,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 225 transitions, 1780 flow [2022-11-02 20:03:39,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:03:39,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:03:39,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 931 transitions. [2022-11-02 20:03:39,938 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8138111888111889 [2022-11-02 20:03:39,938 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 931 transitions. [2022-11-02 20:03:39,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 931 transitions. [2022-11-02 20:03:39,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:03:39,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 931 transitions. [2022-11-02 20:03:39,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 84.63636363636364) internal successors, (931), 11 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:39,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:39,944 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:39,945 INFO L175 Difference]: Start difference. First operand has 188 places, 191 transitions, 1393 flow. Second operand 11 states and 931 transitions. [2022-11-02 20:03:39,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 225 transitions, 1780 flow [2022-11-02 20:03:40,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 225 transitions, 1741 flow, removed 15 selfloop flow, removed 5 redundant places. [2022-11-02 20:03:40,028 INFO L231 Difference]: Finished difference. Result has 194 places, 199 transitions, 1542 flow [2022-11-02 20:03:40,028 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1368, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1542, PETRI_PLACES=194, PETRI_TRANSITIONS=199} [2022-11-02 20:03:40,029 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 102 predicate places. [2022-11-02 20:03:40,029 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 199 transitions, 1542 flow [2022-11-02 20:03:40,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:40,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:03:40,030 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:03:40,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:03:40,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 20:03:40,245 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:03:40,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:40,245 INFO L85 PathProgramCache]: Analyzing trace with hash 2057216706, now seen corresponding path program 2 times [2022-11-02 20:03:40,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:40,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703751518] [2022-11-02 20:03:40,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:40,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:40,440 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:03:40,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:40,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703751518] [2022-11-02 20:03:40,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703751518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:03:40,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:03:40,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:03:40,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810983511] [2022-11-02 20:03:40,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:03:40,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:03:40,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:40,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:03:40,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:03:40,444 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2022-11-02 20:03:40,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 199 transitions, 1542 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:40,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:03:40,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2022-11-02 20:03:40,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:03:41,882 INFO L130 PetriNetUnfolder]: 1028/5537 cut-off events. [2022-11-02 20:03:41,882 INFO L131 PetriNetUnfolder]: For 24170/24432 co-relation queries the response was YES. [2022-11-02 20:03:41,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19978 conditions, 5537 events. 1028/5537 cut-off events. For 24170/24432 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 63102 event pairs, 175 based on Foata normal form. 162/5616 useless extension candidates. Maximal degree in co-relation 19832. Up to 717 conditions per place. [2022-11-02 20:03:41,956 INFO L137 encePairwiseOnDemand]: 100/104 looper letters, 97 selfloop transitions, 6 changer transitions 0/251 dead transitions. [2022-11-02 20:03:41,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 251 transitions, 2203 flow [2022-11-02 20:03:41,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:03:41,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 20:03:41,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2022-11-02 20:03:41,958 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9014423076923077 [2022-11-02 20:03:41,958 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2022-11-02 20:03:41,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2022-11-02 20:03:41,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:03:41,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2022-11-02 20:03:41,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:41,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:41,962 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:41,962 INFO L175 Difference]: Start difference. First operand has 194 places, 199 transitions, 1542 flow. Second operand 4 states and 375 transitions. [2022-11-02 20:03:41,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 251 transitions, 2203 flow [2022-11-02 20:03:42,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 251 transitions, 2118 flow, removed 29 selfloop flow, removed 6 redundant places. [2022-11-02 20:03:42,061 INFO L231 Difference]: Finished difference. Result has 191 places, 199 transitions, 1511 flow [2022-11-02 20:03:42,062 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1475, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1511, PETRI_PLACES=191, PETRI_TRANSITIONS=199} [2022-11-02 20:03:42,062 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 99 predicate places. [2022-11-02 20:03:42,063 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 199 transitions, 1511 flow [2022-11-02 20:03:42,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:42,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:03:42,063 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:03:42,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:03:42,064 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:03:42,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:42,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1576784676, now seen corresponding path program 7 times [2022-11-02 20:03:42,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:42,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714755628] [2022-11-02 20:03:42,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:42,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:42,530 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:42,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:42,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714755628] [2022-11-02 20:03:42,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714755628] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:03:42,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70452101] [2022-11-02 20:03:42,531 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 20:03:42,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:03:42,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:03:42,547 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:03:42,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:03:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:42,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:03:42,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:03:42,874 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:42,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:03:43,030 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:43,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70452101] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:03:43,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:03:43,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-11-02 20:03:43,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063495563] [2022-11-02 20:03:43,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:03:43,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:03:43,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:43,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:03:43,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:03:43,034 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-02 20:03:43,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 199 transitions, 1511 flow. Second operand has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:43,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:03:43,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-02 20:03:43,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:03:44,195 INFO L130 PetriNetUnfolder]: 690/4837 cut-off events. [2022-11-02 20:03:44,196 INFO L131 PetriNetUnfolder]: For 21845/22414 co-relation queries the response was YES. [2022-11-02 20:03:44,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17419 conditions, 4837 events. 690/4837 cut-off events. For 21845/22414 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 55290 event pairs, 136 based on Foata normal form. 177/4918 useless extension candidates. Maximal degree in co-relation 14403. Up to 907 conditions per place. [2022-11-02 20:03:44,267 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 89 selfloop transitions, 27 changer transitions 4/236 dead transitions. [2022-11-02 20:03:44,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 236 transitions, 1948 flow [2022-11-02 20:03:44,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:03:44,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:03:44,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 843 transitions. [2022-11-02 20:03:44,270 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8105769230769231 [2022-11-02 20:03:44,270 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 843 transitions. [2022-11-02 20:03:44,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 843 transitions. [2022-11-02 20:03:44,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:03:44,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 843 transitions. [2022-11-02 20:03:44,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.3) internal successors, (843), 10 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:44,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:44,275 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:44,275 INFO L175 Difference]: Start difference. First operand has 191 places, 199 transitions, 1511 flow. Second operand 10 states and 843 transitions. [2022-11-02 20:03:44,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 236 transitions, 1948 flow [2022-11-02 20:03:44,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 236 transitions, 1948 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:03:44,348 INFO L231 Difference]: Finished difference. Result has 205 places, 216 transitions, 1763 flow [2022-11-02 20:03:44,349 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1511, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1763, PETRI_PLACES=205, PETRI_TRANSITIONS=216} [2022-11-02 20:03:44,349 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 113 predicate places. [2022-11-02 20:03:44,349 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 216 transitions, 1763 flow [2022-11-02 20:03:44,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:44,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:03:44,350 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:03:44,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:03:44,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 20:03:44,566 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:03:44,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:44,567 INFO L85 PathProgramCache]: Analyzing trace with hash 121795402, now seen corresponding path program 8 times [2022-11-02 20:03:44,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:44,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821923246] [2022-11-02 20:03:44,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:44,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:44,914 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:44,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:44,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821923246] [2022-11-02 20:03:44,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821923246] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:03:44,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827385084] [2022-11-02 20:03:44,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:03:44,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:03:44,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:03:44,916 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:03:44,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:03:45,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:03:45,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:03:45,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:03:45,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:03:45,216 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:45,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:03:45,375 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:45,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827385084] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:03:45,376 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:03:45,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-11-02 20:03:45,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848269800] [2022-11-02 20:03:45,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:03:45,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:03:45,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:45,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:03:45,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:03:45,379 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-02 20:03:45,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 216 transitions, 1763 flow. Second operand has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:45,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:03:45,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-02 20:03:45,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:03:46,458 INFO L130 PetriNetUnfolder]: 739/5166 cut-off events. [2022-11-02 20:03:46,458 INFO L131 PetriNetUnfolder]: For 24698/25337 co-relation queries the response was YES. [2022-11-02 20:03:46,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19006 conditions, 5166 events. 739/5166 cut-off events. For 24698/25337 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 59981 event pairs, 144 based on Foata normal form. 182/5249 useless extension candidates. Maximal degree in co-relation 18811. Up to 977 conditions per place. [2022-11-02 20:03:46,519 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 101 selfloop transitions, 21 changer transitions 4/242 dead transitions. [2022-11-02 20:03:46,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 242 transitions, 2150 flow [2022-11-02 20:03:46,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:03:46,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:03:46,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 841 transitions. [2022-11-02 20:03:46,524 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8086538461538462 [2022-11-02 20:03:46,524 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 841 transitions. [2022-11-02 20:03:46,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 841 transitions. [2022-11-02 20:03:46,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:03:46,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 841 transitions. [2022-11-02 20:03:46,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.1) internal successors, (841), 10 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:46,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:46,529 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:46,529 INFO L175 Difference]: Start difference. First operand has 205 places, 216 transitions, 1763 flow. Second operand 10 states and 841 transitions. [2022-11-02 20:03:46,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 242 transitions, 2150 flow [2022-11-02 20:03:46,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 242 transitions, 2119 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-02 20:03:46,616 INFO L231 Difference]: Finished difference. Result has 211 places, 222 transitions, 1863 flow [2022-11-02 20:03:46,617 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1742, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1863, PETRI_PLACES=211, PETRI_TRANSITIONS=222} [2022-11-02 20:03:46,617 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 119 predicate places. [2022-11-02 20:03:46,617 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 222 transitions, 1863 flow [2022-11-02 20:03:46,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:46,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:03:46,618 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:03:46,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:03:46,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:03:46,846 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:03:46,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:46,847 INFO L85 PathProgramCache]: Analyzing trace with hash 547338360, now seen corresponding path program 9 times [2022-11-02 20:03:46,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:46,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533645539] [2022-11-02 20:03:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:46,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:47,185 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:47,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:47,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533645539] [2022-11-02 20:03:47,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533645539] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:03:47,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26702447] [2022-11-02 20:03:47,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:03:47,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:03:47,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:03:47,187 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:03:47,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 20:03:47,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-02 20:03:47,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:03:47,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:03:47,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:03:47,560 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:47,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:03:47,720 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:47,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26702447] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:03:47,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:03:47,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-11-02 20:03:47,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026851085] [2022-11-02 20:03:47,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:03:47,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:03:47,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:47,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:03:47,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:03:47,723 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-02 20:03:47,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 222 transitions, 1863 flow. Second operand has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:47,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:03:47,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-02 20:03:47,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:03:49,106 INFO L130 PetriNetUnfolder]: 811/5784 cut-off events. [2022-11-02 20:03:49,106 INFO L131 PetriNetUnfolder]: For 28402/29149 co-relation queries the response was YES. [2022-11-02 20:03:49,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21373 conditions, 5784 events. 811/5784 cut-off events. For 28402/29149 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 69106 event pairs, 137 based on Foata normal form. 252/5942 useless extension candidates. Maximal degree in co-relation 21150. Up to 858 conditions per place. [2022-11-02 20:03:49,192 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 101 selfloop transitions, 45 changer transitions 4/266 dead transitions. [2022-11-02 20:03:49,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 266 transitions, 2445 flow [2022-11-02 20:03:49,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:03:49,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:03:49,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 931 transitions. [2022-11-02 20:03:49,194 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8138111888111889 [2022-11-02 20:03:49,194 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 931 transitions. [2022-11-02 20:03:49,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 931 transitions. [2022-11-02 20:03:49,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:03:49,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 931 transitions. [2022-11-02 20:03:49,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 84.63636363636364) internal successors, (931), 11 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:49,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:49,199 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:49,199 INFO L175 Difference]: Start difference. First operand has 211 places, 222 transitions, 1863 flow. Second operand 11 states and 931 transitions. [2022-11-02 20:03:49,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 266 transitions, 2445 flow [2022-11-02 20:03:49,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 266 transitions, 2398 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-11-02 20:03:49,298 INFO L231 Difference]: Finished difference. Result has 219 places, 240 transitions, 2179 flow [2022-11-02 20:03:49,298 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1830, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2179, PETRI_PLACES=219, PETRI_TRANSITIONS=240} [2022-11-02 20:03:49,299 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 127 predicate places. [2022-11-02 20:03:49,299 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 240 transitions, 2179 flow [2022-11-02 20:03:49,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:49,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:03:49,300 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:03:49,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:03:49,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:03:49,516 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:03:49,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:49,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1582746190, now seen corresponding path program 10 times [2022-11-02 20:03:49,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:49,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660506742] [2022-11-02 20:03:49,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:49,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:49,893 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:49,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:49,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660506742] [2022-11-02 20:03:49,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660506742] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:03:49,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709518038] [2022-11-02 20:03:49,894 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:03:49,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:03:49,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:03:49,895 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:03:49,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 20:03:49,989 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:03:49,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:03:49,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:03:49,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:03:50,197 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:50,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:03:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:50,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709518038] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:03:50,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:03:50,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-11-02 20:03:50,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243378496] [2022-11-02 20:03:50,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:03:50,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:03:50,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:50,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:03:50,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:03:50,352 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-02 20:03:50,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 240 transitions, 2179 flow. Second operand has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:50,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:03:50,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-02 20:03:50,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:03:52,103 INFO L130 PetriNetUnfolder]: 804/5767 cut-off events. [2022-11-02 20:03:52,103 INFO L131 PetriNetUnfolder]: For 30306/31085 co-relation queries the response was YES. [2022-11-02 20:03:52,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21704 conditions, 5767 events. 804/5767 cut-off events. For 30306/31085 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 69032 event pairs, 116 based on Foata normal form. 307/5987 useless extension candidates. Maximal degree in co-relation 21482. Up to 694 conditions per place. [2022-11-02 20:03:52,181 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 89 selfloop transitions, 61 changer transitions 4/270 dead transitions. [2022-11-02 20:03:52,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 270 transitions, 2662 flow [2022-11-02 20:03:52,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:03:52,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:03:52,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 933 transitions. [2022-11-02 20:03:52,187 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8155594405594405 [2022-11-02 20:03:52,187 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 933 transitions. [2022-11-02 20:03:52,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 933 transitions. [2022-11-02 20:03:52,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:03:52,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 933 transitions. [2022-11-02 20:03:52,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 84.81818181818181) internal successors, (933), 11 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:52,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:52,194 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:52,194 INFO L175 Difference]: Start difference. First operand has 219 places, 240 transitions, 2179 flow. Second operand 11 states and 933 transitions. [2022-11-02 20:03:52,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 270 transitions, 2662 flow [2022-11-02 20:03:52,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 270 transitions, 2593 flow, removed 30 selfloop flow, removed 5 redundant places. [2022-11-02 20:03:52,315 INFO L231 Difference]: Finished difference. Result has 225 places, 244 transitions, 2335 flow [2022-11-02 20:03:52,316 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=2130, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2335, PETRI_PLACES=225, PETRI_TRANSITIONS=244} [2022-11-02 20:03:52,316 INFO L287 CegarLoopForPetriNet]: 92 programPoint places, 133 predicate places. [2022-11-02 20:03:52,317 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 244 transitions, 2335 flow [2022-11-02 20:03:52,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:52,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:03:52,318 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:03:52,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:03:52,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-02 20:03:52,530 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:03:52,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:03:52,531 INFO L85 PathProgramCache]: Analyzing trace with hash 913642095, now seen corresponding path program 11 times [2022-11-02 20:03:52,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:03:52,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359915957] [2022-11-02 20:03:52,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:03:52,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:03:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:03:53,246 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:03:53,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:03:53,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359915957] [2022-11-02 20:03:53,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359915957] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:03:53,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064544239] [2022-11-02 20:03:53,247 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:03:53,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:03:53,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:03:53,250 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:03:53,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50951e1f-5a36-4073-aed9-0325523429d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-02 20:03:53,627 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-02 20:03:53,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:03:53,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 20:03:53,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:03:54,611 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:03:54,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:03:57,969 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:03:57,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064544239] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:03:57,969 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:03:57,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 37 [2022-11-02 20:03:57,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73027249] [2022-11-02 20:03:57,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:03:57,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-02 20:03:57,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:03:57,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-02 20:03:57,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1198, Unknown=0, NotChecked=0, Total=1332 [2022-11-02 20:03:57,973 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 104 [2022-11-02 20:03:57,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 244 transitions, 2335 flow. Second operand has 37 states, 37 states have (on average 69.8108108108108) internal successors, (2583), 37 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:03:57,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:03:57,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 104 [2022-11-02 20:03:57,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:04:35,579 WARN L234 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 52 DAG size of output: 46 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 20:04:40,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:05:18,018 WARN L234 SmtUtils]: Spent 8.87s on a formula simplification. DAG size of input: 64 DAG size of output: 59 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 20:05:20,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:06:03,420 WARN L234 SmtUtils]: Spent 7.24s on a formula simplification that was a NOOP. DAG size: 62 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)