./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/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_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/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_93806ee1-676b-4fd8-aea1-5c57460ac7a6/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 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b --- 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 20:33:26,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:33:26,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:33:26,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:33:26,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:33:26,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:33:26,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:33:26,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:33:26,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:33:26,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:33:26,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:33:26,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:33:26,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:33:26,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:33:26,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:33:26,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:33:26,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:33:26,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:33:26,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:33:26,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:33:26,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:33:26,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:33:26,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:33:26,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:33:26,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:33:26,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:33:26,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:33:26,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:33:26,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:33:26,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:33:26,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:33:26,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:33:26,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:33:26,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:33:26,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:33:26,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:33:26,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:33:26,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:33:26,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:33:26,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:33:26,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:33:26,531 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:33:26,559 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:33:26,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:33:26,560 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:33:26,560 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:33:26,561 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:33:26,561 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:33:26,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:33:26,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:33:26,562 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:33:26,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:33:26,563 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:33:26,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:33:26,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:33:26,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:33:26,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:33:26,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:33:26,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:33:26,564 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:33:26,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:33:26,565 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:33:26,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:33:26,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:33:26,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:33:26,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:33:26,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:33:26,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:33:26,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:33:26,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:33:26,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:33:26,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:33:26,568 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:33:26,568 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:33:26,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:33:26,568 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_93806ee1-676b-4fd8-aea1-5c57460ac7a6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b [2022-11-02 20:33:26,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:33:26,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:33:26,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:33:26,950 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:33:26,951 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:33:26,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2022-11-02 20:33:27,040 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/data/0d18506d3/d567e94e0af144879ad798be11bc7468/FLAG410acd9c4 [2022-11-02 20:33:27,720 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:33:27,721 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2022-11-02 20:33:27,733 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/data/0d18506d3/d567e94e0af144879ad798be11bc7468/FLAG410acd9c4 [2022-11-02 20:33:28,038 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/data/0d18506d3/d567e94e0af144879ad798be11bc7468 [2022-11-02 20:33:28,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:33:28,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:33:28,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:33:28,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:33:28,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:33:28,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:33:28" (1/1) ... [2022-11-02 20:33:28,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ad5b035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:28, skipping insertion in model container [2022-11-02 20:33:28,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:33:28" (1/1) ... [2022-11-02 20:33:28,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:33:28,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:33:28,495 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_93806ee1-676b-4fd8-aea1-5c57460ac7a6/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c[3034,3047] [2022-11-02 20:33:28,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:33:28,536 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:33:28,590 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_93806ee1-676b-4fd8-aea1-5c57460ac7a6/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c[3034,3047] [2022-11-02 20:33:28,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:33:28,625 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:33:28,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:28 WrapperNode [2022-11-02 20:33:28,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:33:28,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:33:28,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:33:28,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:33:28,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:28" (1/1) ... [2022-11-02 20:33:28,667 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:28" (1/1) ... [2022-11-02 20:33:28,730 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 283 [2022-11-02 20:33:28,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:33:28,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:33:28,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:33:28,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:33:28,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:28" (1/1) ... [2022-11-02 20:33:28,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:28" (1/1) ... [2022-11-02 20:33:28,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:28" (1/1) ... [2022-11-02 20:33:28,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:28" (1/1) ... [2022-11-02 20:33:28,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:28" (1/1) ... [2022-11-02 20:33:28,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:28" (1/1) ... [2022-11-02 20:33:28,798 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:28" (1/1) ... [2022-11-02 20:33:28,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:28" (1/1) ... [2022-11-02 20:33:28,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:33:28,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:33:28,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:33:28,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:33:28,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:28" (1/1) ... [2022-11-02 20:33:28,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:33:28,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:33:28,866 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:33:28,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:33:28,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:33:28,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:33:28,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:33:28,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:33:28,923 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:33:28,923 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:33:28,923 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:33:28,924 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:33:28,924 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 20:33:28,924 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 20:33:28,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:33:28,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:33:28,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:33:28,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:33:28,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:33:28,927 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 20:33:29,094 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:33:29,096 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:33:29,789 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:33:29,803 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:33:29,803 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-02 20:33:29,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:33:29 BoogieIcfgContainer [2022-11-02 20:33:29,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:33:29,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:33:29,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:33:29,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:33:29,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:33:28" (1/3) ... [2022-11-02 20:33:29,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e6a6e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:33:29, skipping insertion in model container [2022-11-02 20:33:29,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:28" (2/3) ... [2022-11-02 20:33:29,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e6a6e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:33:29, skipping insertion in model container [2022-11-02 20:33:29,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:33:29" (3/3) ... [2022-11-02 20:33:29,818 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-trans.wvr.c [2022-11-02 20:33:29,829 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:33:29,843 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:33:29,843 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:33:29,843 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:33:30,056 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 20:33:30,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 350 places, 371 transitions, 766 flow [2022-11-02 20:33:30,345 INFO L130 PetriNetUnfolder]: 31/368 cut-off events. [2022-11-02 20:33:30,346 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:33:30,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 368 events. 31/368 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 623 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 282. Up to 2 conditions per place. [2022-11-02 20:33:30,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 350 places, 371 transitions, 766 flow [2022-11-02 20:33:30,380 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 336 places, 357 transitions, 732 flow [2022-11-02 20:33:30,410 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:33:30,422 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;@6f598786, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:33:30,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 20:33:30,571 INFO L130 PetriNetUnfolder]: 31/356 cut-off events. [2022-11-02 20:33:30,571 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:33:30,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:33:30,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:30,573 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:33:30,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:30,580 INFO L85 PathProgramCache]: Analyzing trace with hash 243991727, now seen corresponding path program 1 times [2022-11-02 20:33:30,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:30,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467041097] [2022-11-02 20:33:30,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:30,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:31,083 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 20:33:31,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:31,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467041097] [2022-11-02 20:33:31,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467041097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:31,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:31,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:33:31,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457556039] [2022-11-02 20:33:31,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:31,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:33:31,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:31,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:33:31,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:33:31,148 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 371 [2022-11-02 20:33:31,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 357 transitions, 732 flow. Second operand has 2 states, 2 states have (on average 346.0) internal successors, (692), 2 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:31,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:33:31,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 371 [2022-11-02 20:33:31,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:33:31,330 INFO L130 PetriNetUnfolder]: 9/335 cut-off events. [2022-11-02 20:33:31,331 INFO L131 PetriNetUnfolder]: For 12/14 co-relation queries the response was YES. [2022-11-02 20:33:31,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 335 events. 9/335 cut-off events. For 12/14 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 611 event pairs, 0 based on Foata normal form. 35/345 useless extension candidates. Maximal degree in co-relation 267. Up to 7 conditions per place. [2022-11-02 20:33:31,342 INFO L137 encePairwiseOnDemand]: 349/371 looper letters, 6 selfloop transitions, 0 changer transitions 7/335 dead transitions. [2022-11-02 20:33:31,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 335 transitions, 700 flow [2022-11-02 20:33:31,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:33:31,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:33:31,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 712 transitions. [2022-11-02 20:33:31,372 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9595687331536388 [2022-11-02 20:33:31,373 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 712 transitions. [2022-11-02 20:33:31,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 712 transitions. [2022-11-02 20:33:31,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:33:31,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 712 transitions. [2022-11-02 20:33:31,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 356.0) internal successors, (712), 2 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:31,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 371.0) internal successors, (1113), 3 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:31,409 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 371.0) internal successors, (1113), 3 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:31,411 INFO L175 Difference]: Start difference. First operand has 336 places, 357 transitions, 732 flow. Second operand 2 states and 712 transitions. [2022-11-02 20:33:31,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 335 transitions, 700 flow [2022-11-02 20:33:31,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 335 transitions, 688 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-02 20:33:31,433 INFO L231 Difference]: Finished difference. Result has 331 places, 328 transitions, 662 flow [2022-11-02 20:33:31,436 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=662, PETRI_PLACES=331, PETRI_TRANSITIONS=328} [2022-11-02 20:33:31,444 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, -5 predicate places. [2022-11-02 20:33:31,444 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 328 transitions, 662 flow [2022-11-02 20:33:31,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 346.0) internal successors, (692), 2 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:31,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:33:31,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:31,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:33:31,447 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:33:31,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:31,448 INFO L85 PathProgramCache]: Analyzing trace with hash 267830185, now seen corresponding path program 1 times [2022-11-02 20:33:31,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:31,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885422543] [2022-11-02 20:33:31,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:31,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:32,018 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 20:33:32,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:32,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885422543] [2022-11-02 20:33:32,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885422543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:32,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:32,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:32,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239010757] [2022-11-02 20:33:32,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:32,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:32,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:32,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:32,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:32,034 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 371 [2022-11-02 20:33:32,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 328 transitions, 662 flow. Second operand has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:32,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:33:32,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 371 [2022-11-02 20:33:32,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:33:32,557 INFO L130 PetriNetUnfolder]: 62/1083 cut-off events. [2022-11-02 20:33:32,558 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-02 20:33:32,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1230 conditions, 1083 events. 62/1083 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5757 event pairs, 18 based on Foata normal form. 0/1002 useless extension candidates. Maximal degree in co-relation 1227. Up to 55 conditions per place. [2022-11-02 20:33:32,576 INFO L137 encePairwiseOnDemand]: 366/371 looper letters, 33 selfloop transitions, 4 changer transitions 0/348 dead transitions. [2022-11-02 20:33:32,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 348 transitions, 788 flow [2022-11-02 20:33:32,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:32,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:33:32,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1693 transitions. [2022-11-02 20:33:32,584 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9126684636118598 [2022-11-02 20:33:32,584 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1693 transitions. [2022-11-02 20:33:32,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1693 transitions. [2022-11-02 20:33:32,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:33:32,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1693 transitions. [2022-11-02 20:33:32,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 338.6) internal successors, (1693), 5 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:32,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:32,599 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:32,600 INFO L175 Difference]: Start difference. First operand has 331 places, 328 transitions, 662 flow. Second operand 5 states and 1693 transitions. [2022-11-02 20:33:32,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 348 transitions, 788 flow [2022-11-02 20:33:32,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 348 transitions, 788 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:33:32,612 INFO L231 Difference]: Finished difference. Result has 331 places, 331 transitions, 691 flow [2022-11-02 20:33:32,613 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=691, PETRI_PLACES=331, PETRI_TRANSITIONS=331} [2022-11-02 20:33:32,615 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, -5 predicate places. [2022-11-02 20:33:32,615 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 331 transitions, 691 flow [2022-11-02 20:33:32,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:32,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:33:32,618 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:32,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:33:32,619 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:33:32,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:32,621 INFO L85 PathProgramCache]: Analyzing trace with hash 992335791, now seen corresponding path program 1 times [2022-11-02 20:33:32,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:32,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982245886] [2022-11-02 20:33:32,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:32,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:32,964 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 20:33:32,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:32,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982245886] [2022-11-02 20:33:32,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982245886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:32,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:32,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:32,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13646621] [2022-11-02 20:33:32,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:32,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:32,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:32,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:32,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:32,973 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 371 [2022-11-02 20:33:32,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 331 transitions, 691 flow. Second operand has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:32,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:33:32,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 371 [2022-11-02 20:33:32,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:33:33,533 INFO L130 PetriNetUnfolder]: 91/1204 cut-off events. [2022-11-02 20:33:33,533 INFO L131 PetriNetUnfolder]: For 77/145 co-relation queries the response was YES. [2022-11-02 20:33:33,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1434 conditions, 1204 events. 91/1204 cut-off events. For 77/145 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7663 event pairs, 36 based on Foata normal form. 1/1100 useless extension candidates. Maximal degree in co-relation 1428. Up to 99 conditions per place. [2022-11-02 20:33:33,568 INFO L137 encePairwiseOnDemand]: 366/371 looper letters, 31 selfloop transitions, 4 changer transitions 0/349 dead transitions. [2022-11-02 20:33:33,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 349 transitions, 807 flow [2022-11-02 20:33:33,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:33,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:33:33,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1691 transitions. [2022-11-02 20:33:33,574 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9115902964959569 [2022-11-02 20:33:33,575 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1691 transitions. [2022-11-02 20:33:33,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1691 transitions. [2022-11-02 20:33:33,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:33:33,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1691 transitions. [2022-11-02 20:33:33,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:33,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:33,587 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:33,588 INFO L175 Difference]: Start difference. First operand has 331 places, 331 transitions, 691 flow. Second operand 5 states and 1691 transitions. [2022-11-02 20:33:33,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 349 transitions, 807 flow [2022-11-02 20:33:33,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 349 transitions, 807 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:33:33,598 INFO L231 Difference]: Finished difference. Result has 338 places, 334 transitions, 720 flow [2022-11-02 20:33:33,599 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=720, PETRI_PLACES=338, PETRI_TRANSITIONS=334} [2022-11-02 20:33:33,602 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 2 predicate places. [2022-11-02 20:33:33,603 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 334 transitions, 720 flow [2022-11-02 20:33:33,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:33,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:33:33,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:33,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:33:33,605 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:33:33,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:33,607 INFO L85 PathProgramCache]: Analyzing trace with hash -2021205813, now seen corresponding path program 1 times [2022-11-02 20:33:33,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:33,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085627659] [2022-11-02 20:33:33,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:33,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:33,942 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 20:33:33,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:33,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085627659] [2022-11-02 20:33:33,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085627659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:33,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:33,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:33:33,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810792614] [2022-11-02 20:33:33,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:33,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:33:33,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:33,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:33:33,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:33,966 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 371 [2022-11-02 20:33:33,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 334 transitions, 720 flow. Second operand has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:33,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:33:33,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 371 [2022-11-02 20:33:33,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:33:34,324 INFO L130 PetriNetUnfolder]: 7/538 cut-off events. [2022-11-02 20:33:34,324 INFO L131 PetriNetUnfolder]: For 25/35 co-relation queries the response was YES. [2022-11-02 20:33:34,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 646 conditions, 538 events. 7/538 cut-off events. For 25/35 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1605 event pairs, 0 based on Foata normal form. 0/516 useless extension candidates. Maximal degree in co-relation 637. Up to 56 conditions per place. [2022-11-02 20:33:34,335 INFO L137 encePairwiseOnDemand]: 356/371 looper letters, 42 selfloop transitions, 12 changer transitions 0/346 dead transitions. [2022-11-02 20:33:34,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 346 transitions, 852 flow [2022-11-02 20:33:34,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:34,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:33:34,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1587 transitions. [2022-11-02 20:33:34,340 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8555256064690027 [2022-11-02 20:33:34,340 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1587 transitions. [2022-11-02 20:33:34,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1587 transitions. [2022-11-02 20:33:34,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:33:34,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1587 transitions. [2022-11-02 20:33:34,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 317.4) internal successors, (1587), 5 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:34,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:34,357 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:34,358 INFO L175 Difference]: Start difference. First operand has 338 places, 334 transitions, 720 flow. Second operand 5 states and 1587 transitions. [2022-11-02 20:33:34,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 346 transitions, 852 flow [2022-11-02 20:33:34,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 346 transitions, 852 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:33:34,370 INFO L231 Difference]: Finished difference. Result has 343 places, 337 transitions, 768 flow [2022-11-02 20:33:34,371 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=768, PETRI_PLACES=343, PETRI_TRANSITIONS=337} [2022-11-02 20:33:34,374 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 7 predicate places. [2022-11-02 20:33:34,383 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 337 transitions, 768 flow [2022-11-02 20:33:34,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:34,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:33:34,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:34,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:33:34,386 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:33:34,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:34,387 INFO L85 PathProgramCache]: Analyzing trace with hash 126560074, now seen corresponding path program 1 times [2022-11-02 20:33:34,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:34,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121472246] [2022-11-02 20:33:34,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:34,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:34,801 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:33:34,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:34,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121472246] [2022-11-02 20:33:34,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121472246] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:33:34,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962564630] [2022-11-02 20:33:34,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:34,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:33:34,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:33:34,806 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:33:34,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:33:35,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:35,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:33:35,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:35,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:33:35,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:35,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:33:35,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962564630] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:35,391 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:33:35,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-02 20:33:35,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927047891] [2022-11-02 20:33:35,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:35,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:33:35,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:35,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:33:35,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:33:35,402 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 371 [2022-11-02 20:33:35,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 337 transitions, 768 flow. Second operand has 15 states, 15 states have (on average 307.3333333333333) internal successors, (4610), 15 states have internal predecessors, (4610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:35,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:33:35,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 371 [2022-11-02 20:33:35,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:33:35,913 INFO L130 PetriNetUnfolder]: 7/565 cut-off events. [2022-11-02 20:33:35,913 INFO L131 PetriNetUnfolder]: For 37/47 co-relation queries the response was YES. [2022-11-02 20:33:35,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 723 conditions, 565 events. 7/565 cut-off events. For 37/47 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1579 event pairs, 0 based on Foata normal form. 6/552 useless extension candidates. Maximal degree in co-relation 712. Up to 47 conditions per place. [2022-11-02 20:33:35,921 INFO L137 encePairwiseOnDemand]: 347/371 looper letters, 45 selfloop transitions, 33 changer transitions 0/367 dead transitions. [2022-11-02 20:33:35,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 367 transitions, 990 flow [2022-11-02 20:33:35,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:33:35,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:33:35,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3417 transitions. [2022-11-02 20:33:35,929 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8372947806910072 [2022-11-02 20:33:35,929 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3417 transitions. [2022-11-02 20:33:35,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3417 transitions. [2022-11-02 20:33:35,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:33:35,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3417 transitions. [2022-11-02 20:33:35,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 310.6363636363636) internal successors, (3417), 11 states have internal predecessors, (3417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:35,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 371.0) internal successors, (4452), 12 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:35,947 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 371.0) internal successors, (4452), 12 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:35,947 INFO L175 Difference]: Start difference. First operand has 343 places, 337 transitions, 768 flow. Second operand 11 states and 3417 transitions. [2022-11-02 20:33:35,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 367 transitions, 990 flow [2022-11-02 20:33:35,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 367 transitions, 972 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-02 20:33:35,956 INFO L231 Difference]: Finished difference. Result has 353 places, 355 transitions, 917 flow [2022-11-02 20:33:35,957 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=917, PETRI_PLACES=353, PETRI_TRANSITIONS=355} [2022-11-02 20:33:35,957 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 17 predicate places. [2022-11-02 20:33:35,958 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 355 transitions, 917 flow [2022-11-02 20:33:35,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 307.3333333333333) internal successors, (4610), 15 states have internal predecessors, (4610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:35,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:33:35,960 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:36,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:36,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:33:36,186 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:33:36,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:36,187 INFO L85 PathProgramCache]: Analyzing trace with hash -95340082, now seen corresponding path program 2 times [2022-11-02 20:33:36,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:36,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690852807] [2022-11-02 20:33:36,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:36,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:36,742 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-02 20:33:36,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:36,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690852807] [2022-11-02 20:33:36,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690852807] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:33:36,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359043573] [2022-11-02 20:33:36,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:33:36,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:33:36,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:33:36,746 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:33:36,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:33:36,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:33:36,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:33:36,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:33:36,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:37,031 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-02 20:33:37,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:37,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359043573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:37,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:33:37,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-11-02 20:33:37,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779879935] [2022-11-02 20:33:37,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:37,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:33:37,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:37,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:33:37,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:33:37,037 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 371 [2022-11-02 20:33:37,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 355 transitions, 917 flow. Second operand has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:37,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:33:37,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 371 [2022-11-02 20:33:37,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:33:37,674 INFO L130 PetriNetUnfolder]: 164/1673 cut-off events. [2022-11-02 20:33:37,674 INFO L131 PetriNetUnfolder]: For 170/236 co-relation queries the response was YES. [2022-11-02 20:33:37,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2207 conditions, 1673 events. 164/1673 cut-off events. For 170/236 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 11925 event pairs, 60 based on Foata normal form. 9/1505 useless extension candidates. Maximal degree in co-relation 2193. Up to 250 conditions per place. [2022-11-02 20:33:37,750 INFO L137 encePairwiseOnDemand]: 363/371 looper letters, 46 selfloop transitions, 5 changer transitions 5/369 dead transitions. [2022-11-02 20:33:37,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 369 transitions, 1062 flow [2022-11-02 20:33:37,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:33:37,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:33:37,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1851 transitions. [2022-11-02 20:33:37,757 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8315363881401617 [2022-11-02 20:33:37,760 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1851 transitions. [2022-11-02 20:33:37,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1851 transitions. [2022-11-02 20:33:37,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:33:37,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1851 transitions. [2022-11-02 20:33:37,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 308.5) internal successors, (1851), 6 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:37,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 371.0) internal successors, (2597), 7 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:37,773 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 371.0) internal successors, (2597), 7 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:37,773 INFO L175 Difference]: Start difference. First operand has 353 places, 355 transitions, 917 flow. Second operand 6 states and 1851 transitions. [2022-11-02 20:33:37,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 369 transitions, 1062 flow [2022-11-02 20:33:37,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 369 transitions, 1037 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-11-02 20:33:37,792 INFO L231 Difference]: Finished difference. Result has 359 places, 359 transitions, 931 flow [2022-11-02 20:33:37,792 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=931, PETRI_PLACES=359, PETRI_TRANSITIONS=359} [2022-11-02 20:33:37,795 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 23 predicate places. [2022-11-02 20:33:37,795 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 359 transitions, 931 flow [2022-11-02 20:33:37,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:37,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:33:37,797 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:37,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:38,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:33:38,011 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:33:38,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:38,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1902012858, now seen corresponding path program 1 times [2022-11-02 20:33:38,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:38,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993343851] [2022-11-02 20:33:38,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:38,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:38,329 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-02 20:33:38,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:38,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993343851] [2022-11-02 20:33:38,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993343851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:38,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:38,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:38,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802915797] [2022-11-02 20:33:38,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:38,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:38,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:38,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:38,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:38,335 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 371 [2022-11-02 20:33:38,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 359 transitions, 931 flow. Second operand has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:38,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:33:38,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 371 [2022-11-02 20:33:38,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:33:39,125 INFO L130 PetriNetUnfolder]: 234/2062 cut-off events. [2022-11-02 20:33:39,125 INFO L131 PetriNetUnfolder]: For 293/371 co-relation queries the response was YES. [2022-11-02 20:33:39,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2915 conditions, 2062 events. 234/2062 cut-off events. For 293/371 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 17495 event pairs, 108 based on Foata normal form. 0/1818 useless extension candidates. Maximal degree in co-relation 2897. Up to 263 conditions per place. [2022-11-02 20:33:39,161 INFO L137 encePairwiseOnDemand]: 366/371 looper letters, 27 selfloop transitions, 4 changer transitions 2/374 dead transitions. [2022-11-02 20:33:39,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 374 transitions, 1032 flow [2022-11-02 20:33:39,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:39,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:33:39,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1689 transitions. [2022-11-02 20:33:39,233 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9105121293800539 [2022-11-02 20:33:39,234 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1689 transitions. [2022-11-02 20:33:39,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1689 transitions. [2022-11-02 20:33:39,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:33:39,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1689 transitions. [2022-11-02 20:33:39,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 337.8) internal successors, (1689), 5 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:39,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:39,244 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:39,245 INFO L175 Difference]: Start difference. First operand has 359 places, 359 transitions, 931 flow. Second operand 5 states and 1689 transitions. [2022-11-02 20:33:39,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 374 transitions, 1032 flow [2022-11-02 20:33:39,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 374 transitions, 1024 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-11-02 20:33:39,256 INFO L231 Difference]: Finished difference. Result has 361 places, 361 transitions, 947 flow [2022-11-02 20:33:39,256 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=947, PETRI_PLACES=361, PETRI_TRANSITIONS=361} [2022-11-02 20:33:39,258 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 25 predicate places. [2022-11-02 20:33:39,258 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 361 transitions, 947 flow [2022-11-02 20:33:39,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:39,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:33:39,264 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:39,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:33:39,265 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:33:39,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:39,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1644683833, now seen corresponding path program 1 times [2022-11-02 20:33:39,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:39,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970036283] [2022-11-02 20:33:39,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:39,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:39,659 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-02 20:33:39,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:39,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970036283] [2022-11-02 20:33:39,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970036283] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:33:39,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143936531] [2022-11-02 20:33:39,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:39,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:33:39,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:33:39,662 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:33:39,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:33:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:39,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:33:39,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:40,291 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-02 20:33:40,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:40,551 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-02 20:33:40,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143936531] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:40,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:33:40,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 11] total 24 [2022-11-02 20:33:40,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956825030] [2022-11-02 20:33:40,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:40,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 20:33:40,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:40,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 20:33:40,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:33:40,567 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 371 [2022-11-02 20:33:40,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 361 transitions, 947 flow. Second operand has 24 states, 24 states have (on average 297.0) internal successors, (7128), 24 states have internal predecessors, (7128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:40,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:33:40,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 371 [2022-11-02 20:33:40,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:33:42,890 INFO L130 PetriNetUnfolder]: 354/2839 cut-off events. [2022-11-02 20:33:42,891 INFO L131 PetriNetUnfolder]: For 519/601 co-relation queries the response was YES. [2022-11-02 20:33:42,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4257 conditions, 2839 events. 354/2839 cut-off events. For 519/601 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 26779 event pairs, 120 based on Foata normal form. 27/2556 useless extension candidates. Maximal degree in co-relation 4239. Up to 310 conditions per place. [2022-11-02 20:33:42,936 INFO L137 encePairwiseOnDemand]: 340/371 looper letters, 93 selfloop transitions, 59 changer transitions 2/434 dead transitions. [2022-11-02 20:33:42,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 434 transitions, 1509 flow [2022-11-02 20:33:42,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:33:42,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-02 20:33:42,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 7145 transitions. [2022-11-02 20:33:42,952 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8024483378256964 [2022-11-02 20:33:42,952 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 7145 transitions. [2022-11-02 20:33:42,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 7145 transitions. [2022-11-02 20:33:42,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:33:42,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 7145 transitions. [2022-11-02 20:33:42,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 297.7083333333333) internal successors, (7145), 24 states have internal predecessors, (7145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:42,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 371.0) internal successors, (9275), 25 states have internal predecessors, (9275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:42,990 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 371.0) internal successors, (9275), 25 states have internal predecessors, (9275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:42,991 INFO L175 Difference]: Start difference. First operand has 361 places, 361 transitions, 947 flow. Second operand 24 states and 7145 transitions. [2022-11-02 20:33:42,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 434 transitions, 1509 flow [2022-11-02 20:33:42,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 434 transitions, 1509 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:33:43,004 INFO L231 Difference]: Finished difference. Result has 391 places, 387 transitions, 1267 flow [2022-11-02 20:33:43,005 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1267, PETRI_PLACES=391, PETRI_TRANSITIONS=387} [2022-11-02 20:33:43,009 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 55 predicate places. [2022-11-02 20:33:43,010 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 387 transitions, 1267 flow [2022-11-02 20:33:43,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 297.0) internal successors, (7128), 24 states have internal predecessors, (7128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:43,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:33:43,013 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:43,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:43,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-02 20:33:43,233 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:33:43,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:43,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1893064209, now seen corresponding path program 1 times [2022-11-02 20:33:43,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:43,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905551592] [2022-11-02 20:33:43,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:43,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:43,950 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-02 20:33:43,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:43,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905551592] [2022-11-02 20:33:43,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905551592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:43,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:43,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:33:43,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199948627] [2022-11-02 20:33:43,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:43,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:33:43,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:43,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:33:43,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:33:43,957 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 371 [2022-11-02 20:33:43,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 387 transitions, 1267 flow. Second operand has 7 states, 7 states have (on average 325.42857142857144) internal successors, (2278), 7 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:43,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:33:43,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 371 [2022-11-02 20:33:43,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:33:49,355 INFO L130 PetriNetUnfolder]: 2285/13008 cut-off events. [2022-11-02 20:33:49,355 INFO L131 PetriNetUnfolder]: For 4861/5505 co-relation queries the response was YES. [2022-11-02 20:33:49,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21374 conditions, 13008 events. 2285/13008 cut-off events. For 4861/5505 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 157267 event pairs, 1183 based on Foata normal form. 205/12039 useless extension candidates. Maximal degree in co-relation 21348. Up to 2041 conditions per place. [2022-11-02 20:33:49,575 INFO L137 encePairwiseOnDemand]: 362/371 looper letters, 91 selfloop transitions, 17 changer transitions 5/468 dead transitions. [2022-11-02 20:33:49,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 468 transitions, 1783 flow [2022-11-02 20:33:49,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:33:49,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:33:49,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3008 transitions. [2022-11-02 20:33:49,680 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.900868523510033 [2022-11-02 20:33:49,680 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3008 transitions. [2022-11-02 20:33:49,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3008 transitions. [2022-11-02 20:33:49,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:33:49,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3008 transitions. [2022-11-02 20:33:49,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 334.22222222222223) internal successors, (3008), 9 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:49,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 371.0) internal successors, (3710), 10 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:49,696 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 371.0) internal successors, (3710), 10 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:49,697 INFO L175 Difference]: Start difference. First operand has 391 places, 387 transitions, 1267 flow. Second operand 9 states and 3008 transitions. [2022-11-02 20:33:49,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 468 transitions, 1783 flow [2022-11-02 20:33:49,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 468 transitions, 1706 flow, removed 14 selfloop flow, removed 9 redundant places. [2022-11-02 20:33:49,777 INFO L231 Difference]: Finished difference. Result has 396 places, 401 transitions, 1320 flow [2022-11-02 20:33:49,778 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1320, PETRI_PLACES=396, PETRI_TRANSITIONS=401} [2022-11-02 20:33:49,779 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 60 predicate places. [2022-11-02 20:33:49,779 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 401 transitions, 1320 flow [2022-11-02 20:33:49,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 325.42857142857144) internal successors, (2278), 7 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:49,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:33:49,781 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:49,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:33:49,781 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:33:49,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:49,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1728468819, now seen corresponding path program 2 times [2022-11-02 20:33:49,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:49,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475080720] [2022-11-02 20:33:49,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:49,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:50,389 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-02 20:33:50,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:50,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475080720] [2022-11-02 20:33:50,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475080720] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:33:50,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332698391] [2022-11-02 20:33:50,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:33:50,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:33:50,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:33:50,391 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:33:50,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:33:50,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:33:50,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:33:50,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:33:50,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:50,905 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-02 20:33:50,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:50,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332698391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:50,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:33:50,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-11-02 20:33:50,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711690678] [2022-11-02 20:33:50,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:50,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:33:50,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:50,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:33:50,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:33:50,910 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 371 [2022-11-02 20:33:50,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 401 transitions, 1320 flow. Second operand has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:50,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:33:50,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 371 [2022-11-02 20:33:50,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:33:56,152 INFO L130 PetriNetUnfolder]: 2458/16995 cut-off events. [2022-11-02 20:33:56,152 INFO L131 PetriNetUnfolder]: For 3321/3863 co-relation queries the response was YES. [2022-11-02 20:33:56,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26560 conditions, 16995 events. 2458/16995 cut-off events. For 3321/3863 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 201204 event pairs, 190 based on Foata normal form. 484/16595 useless extension candidates. Maximal degree in co-relation 26528. Up to 2063 conditions per place. [2022-11-02 20:33:56,485 INFO L137 encePairwiseOnDemand]: 359/371 looper letters, 92 selfloop transitions, 33 changer transitions 0/495 dead transitions. [2022-11-02 20:33:56,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 495 transitions, 1864 flow [2022-11-02 20:33:56,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:33:56,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-02 20:33:56,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4263 transitions. [2022-11-02 20:33:56,496 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8838896952104499 [2022-11-02 20:33:56,496 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4263 transitions. [2022-11-02 20:33:56,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4263 transitions. [2022-11-02 20:33:56,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:33:56,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4263 transitions. [2022-11-02 20:33:56,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 327.9230769230769) internal successors, (4263), 13 states have internal predecessors, (4263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:56,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 371.0) internal successors, (5194), 14 states have internal predecessors, (5194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:56,520 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 371.0) internal successors, (5194), 14 states have internal predecessors, (5194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:56,521 INFO L175 Difference]: Start difference. First operand has 396 places, 401 transitions, 1320 flow. Second operand 13 states and 4263 transitions. [2022-11-02 20:33:56,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 495 transitions, 1864 flow [2022-11-02 20:33:56,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 495 transitions, 1864 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:33:56,554 INFO L231 Difference]: Finished difference. Result has 414 places, 429 transitions, 1514 flow [2022-11-02 20:33:56,556 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1320, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1514, PETRI_PLACES=414, PETRI_TRANSITIONS=429} [2022-11-02 20:33:56,556 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 78 predicate places. [2022-11-02 20:33:56,557 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 429 transitions, 1514 flow [2022-11-02 20:33:56,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:56,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:33:56,558 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:56,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-02 20:33:56,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:33:56,954 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:33:56,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:56,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1145845885, now seen corresponding path program 3 times [2022-11-02 20:33:56,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:56,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313581685] [2022-11-02 20:33:56,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:56,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:57,637 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-02 20:33:57,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:57,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313581685] [2022-11-02 20:33:57,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313581685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:57,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:57,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:33:57,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515958915] [2022-11-02 20:33:57,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:57,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:33:57,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:57,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:33:57,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:33:57,644 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 371 [2022-11-02 20:33:57,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 429 transitions, 1514 flow. Second operand has 7 states, 7 states have (on average 325.42857142857144) internal successors, (2278), 7 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:57,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:33:57,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 371 [2022-11-02 20:33:57,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:34:05,453 INFO L130 PetriNetUnfolder]: 4828/25963 cut-off events. [2022-11-02 20:34:05,453 INFO L131 PetriNetUnfolder]: For 16472/17848 co-relation queries the response was YES. [2022-11-02 20:34:05,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50222 conditions, 25963 events. 4828/25963 cut-off events. For 16472/17848 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 332218 event pairs, 2014 based on Foata normal form. 931/25245 useless extension candidates. Maximal degree in co-relation 50183. Up to 4182 conditions per place. [2022-11-02 20:34:05,904 INFO L137 encePairwiseOnDemand]: 364/371 looper letters, 88 selfloop transitions, 31 changer transitions 0/502 dead transitions. [2022-11-02 20:34:05,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 502 transitions, 2124 flow [2022-11-02 20:34:05,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:34:05,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:34:05,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2992 transitions. [2022-11-02 20:34:05,912 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8960766696615753 [2022-11-02 20:34:05,912 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2992 transitions. [2022-11-02 20:34:05,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2992 transitions. [2022-11-02 20:34:05,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:34:05,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2992 transitions. [2022-11-02 20:34:05,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 332.44444444444446) internal successors, (2992), 9 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:05,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 371.0) internal successors, (3710), 10 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:05,928 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 371.0) internal successors, (3710), 10 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:05,928 INFO L175 Difference]: Start difference. First operand has 414 places, 429 transitions, 1514 flow. Second operand 9 states and 2992 transitions. [2022-11-02 20:34:05,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 502 transitions, 2124 flow [2022-11-02 20:34:06,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 502 transitions, 2124 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:34:06,274 INFO L231 Difference]: Finished difference. Result has 426 places, 445 transitions, 1748 flow [2022-11-02 20:34:06,275 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1514, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1748, PETRI_PLACES=426, PETRI_TRANSITIONS=445} [2022-11-02 20:34:06,276 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 90 predicate places. [2022-11-02 20:34:06,276 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 445 transitions, 1748 flow [2022-11-02 20:34:06,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 325.42857142857144) internal successors, (2278), 7 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:06,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:34:06,277 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:34:06,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:34:06,278 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:34:06,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:06,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1100583981, now seen corresponding path program 4 times [2022-11-02 20:34:06,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:06,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138129124] [2022-11-02 20:34:06,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:06,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:06,920 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-02 20:34:06,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:06,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138129124] [2022-11-02 20:34:06,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138129124] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:06,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144330115] [2022-11-02 20:34:06,921 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:34:06,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:06,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:34:06,923 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:34:06,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:34:07,737 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:34:07,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:34:07,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:34:07,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:07,925 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-02 20:34:07,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:08,125 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-02 20:34:08,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144330115] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:08,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:08,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 7 [2022-11-02 20:34:08,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582550129] [2022-11-02 20:34:08,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:08,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:08,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:08,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:08,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:34:08,133 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 371 [2022-11-02 20:34:08,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 445 transitions, 1748 flow. Second operand has 5 states, 5 states have (on average 331.2) internal successors, (1656), 5 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:08,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:34:08,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 371 [2022-11-02 20:34:08,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:34:16,145 INFO L130 PetriNetUnfolder]: 3331/26010 cut-off events. [2022-11-02 20:34:16,145 INFO L131 PetriNetUnfolder]: For 21678/22636 co-relation queries the response was YES. [2022-11-02 20:34:16,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48671 conditions, 26010 events. 3331/26010 cut-off events. For 21678/22636 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 344879 event pairs, 206 based on Foata normal form. 539/25162 useless extension candidates. Maximal degree in co-relation 48627. Up to 2410 conditions per place. [2022-11-02 20:34:16,938 INFO L137 encePairwiseOnDemand]: 362/371 looper letters, 88 selfloop transitions, 27 changer transitions 2/509 dead transitions. [2022-11-02 20:34:16,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 509 transitions, 2439 flow [2022-11-02 20:34:16,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:16,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:34:16,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2357 transitions. [2022-11-02 20:34:16,947 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9075856757797459 [2022-11-02 20:34:16,947 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2357 transitions. [2022-11-02 20:34:16,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2357 transitions. [2022-11-02 20:34:16,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:34:16,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2357 transitions. [2022-11-02 20:34:16,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 336.7142857142857) internal successors, (2357), 7 states have internal predecessors, (2357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:16,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 371.0) internal successors, (2968), 8 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:16,971 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 371.0) internal successors, (2968), 8 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:16,971 INFO L175 Difference]: Start difference. First operand has 426 places, 445 transitions, 1748 flow. Second operand 7 states and 2357 transitions. [2022-11-02 20:34:16,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 509 transitions, 2439 flow [2022-11-02 20:34:17,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 509 transitions, 2419 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-11-02 20:34:17,245 INFO L231 Difference]: Finished difference. Result has 436 places, 461 transitions, 1950 flow [2022-11-02 20:34:17,246 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1736, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1950, PETRI_PLACES=436, PETRI_TRANSITIONS=461} [2022-11-02 20:34:17,248 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 100 predicate places. [2022-11-02 20:34:17,248 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 461 transitions, 1950 flow [2022-11-02 20:34:17,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 331.2) internal successors, (1656), 5 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:17,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:34:17,249 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:34:17,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:17,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 20:34:17,466 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:34:17,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:17,467 INFO L85 PathProgramCache]: Analyzing trace with hash 91229485, now seen corresponding path program 5 times [2022-11-02 20:34:17,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:17,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391287695] [2022-11-02 20:34:17,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:17,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:18,215 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-02 20:34:18,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:18,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391287695] [2022-11-02 20:34:18,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391287695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:18,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:18,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:34:18,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57303323] [2022-11-02 20:34:18,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:18,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:34:18,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:18,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:34:18,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:34:18,224 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 371 [2022-11-02 20:34:18,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 461 transitions, 1950 flow. Second operand has 7 states, 7 states have (on average 325.42857142857144) internal successors, (2278), 7 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:18,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:34:18,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 371 [2022-11-02 20:34:18,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:34:29,119 INFO L130 PetriNetUnfolder]: 5587/34000 cut-off events. [2022-11-02 20:34:29,119 INFO L131 PetriNetUnfolder]: For 47480/49514 co-relation queries the response was YES. [2022-11-02 20:34:29,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71553 conditions, 34000 events. 5587/34000 cut-off events. For 47480/49514 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 453855 event pairs, 2088 based on Foata normal form. 1094/32760 useless extension candidates. Maximal degree in co-relation 71504. Up to 4247 conditions per place. [2022-11-02 20:34:30,028 INFO L137 encePairwiseOnDemand]: 361/371 looper letters, 115 selfloop transitions, 45 changer transitions 2/545 dead transitions. [2022-11-02 20:34:30,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 545 transitions, 2796 flow [2022-11-02 20:34:30,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:34:30,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:34:30,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3005 transitions. [2022-11-02 20:34:30,036 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8999700509134472 [2022-11-02 20:34:30,037 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3005 transitions. [2022-11-02 20:34:30,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3005 transitions. [2022-11-02 20:34:30,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:34:30,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3005 transitions. [2022-11-02 20:34:30,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 333.8888888888889) internal successors, (3005), 9 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:30,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 371.0) internal successors, (3710), 10 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:30,056 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 371.0) internal successors, (3710), 10 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:30,056 INFO L175 Difference]: Start difference. First operand has 436 places, 461 transitions, 1950 flow. Second operand 9 states and 3005 transitions. [2022-11-02 20:34:30,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 545 transitions, 2796 flow [2022-11-02 20:34:30,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 545 transitions, 2752 flow, removed 17 selfloop flow, removed 1 redundant places. [2022-11-02 20:34:30,491 INFO L231 Difference]: Finished difference. Result has 446 places, 473 transitions, 2181 flow [2022-11-02 20:34:30,492 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1921, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2181, PETRI_PLACES=446, PETRI_TRANSITIONS=473} [2022-11-02 20:34:30,492 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 110 predicate places. [2022-11-02 20:34:30,493 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 473 transitions, 2181 flow [2022-11-02 20:34:30,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 325.42857142857144) internal successors, (2278), 7 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:30,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:34:30,494 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:34:30,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:34:30,494 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:34:30,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:30,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1209722623, now seen corresponding path program 6 times [2022-11-02 20:34:30,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:30,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235729510] [2022-11-02 20:34:30,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:30,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:31,060 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-02 20:34:31,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:31,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235729510] [2022-11-02 20:34:31,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235729510] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:31,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005494598] [2022-11-02 20:34:31,064 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 20:34:31,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:31,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:34:31,066 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:34:31,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93806ee1-676b-4fd8-aea1-5c57460ac7a6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:34:31,272 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-11-02 20:34:31,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:34:31,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:34:31,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:31,456 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-02 20:34:31,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:34:31,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005494598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:31,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:34:31,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-11-02 20:34:31,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442677649] [2022-11-02 20:34:31,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:31,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:34:31,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:31,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:34:31,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:34:31,469 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 371 [2022-11-02 20:34:31,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 473 transitions, 2181 flow. Second operand has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:31,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:34:31,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 371 [2022-11-02 20:34:31,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand