./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-lamport.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-lamport.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro --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 dda4e60b50ccb96ce521fa11aa956967863397082d82b1fb589f74967fe28a7c --- 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-8393723 [2022-11-18 19:32:01,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:32:01,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:32:01,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:32:01,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:32:01,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:32:01,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:32:01,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:32:01,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:32:01,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:32:01,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:32:01,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:32:01,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:32:01,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:32:01,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:32:01,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:32:01,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:32:01,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:32:01,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:32:01,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:32:01,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:32:01,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:32:01,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:32:01,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:32:01,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:32:01,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:32:01,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:32:01,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:32:01,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:32:01,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:32:01,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:32:01,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:32:01,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:32:01,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:32:01,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:32:01,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:32:01,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:32:01,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:32:01,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:32:01,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:32:01,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:32:01,522 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:32:01,550 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:32:01,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:32:01,551 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:32:01,551 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:32:01,552 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:32:01,553 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:32:01,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:32:01,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:32:01,554 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:32:01,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:32:01,555 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:32:01,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:32:01,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:32:01,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:32:01,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:32:01,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:32:01,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:32:01,557 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:32:01,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:32:01,558 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:32:01,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:32:01,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:32:01,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:32:01,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:32:01,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:32:01,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:32:01,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:32:01,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:32:01,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:32:01,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:32:01,562 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:32:01,562 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:32:01,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:32:01,563 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_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda4e60b50ccb96ce521fa11aa956967863397082d82b1fb589f74967fe28a7c [2022-11-18 19:32:01,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:32:01,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:32:01,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:32:01,903 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:32:01,904 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:32:01,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2022-11-18 19:32:02,000 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/data/f7cca2f76/9de481e03e7345ccb914a749dba63216/FLAGa29804781 [2022-11-18 19:32:02,531 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:32:02,532 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2022-11-18 19:32:02,538 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/data/f7cca2f76/9de481e03e7345ccb914a749dba63216/FLAGa29804781 [2022-11-18 19:32:02,878 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/data/f7cca2f76/9de481e03e7345ccb914a749dba63216 [2022-11-18 19:32:02,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:32:02,882 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:32:02,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:32:02,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:32:02,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:32:02,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:32:02" (1/1) ... [2022-11-18 19:32:02,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4df41568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:02, skipping insertion in model container [2022-11-18 19:32:02,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:32:02" (1/1) ... [2022-11-18 19:32:02,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:32:02,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:32:03,191 WARN L234 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_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/sv-benchmarks/c/weaver/parallel-lamport.wvr.c[4210,4223] [2022-11-18 19:32:03,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:32:03,217 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:32:03,249 WARN L234 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_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/sv-benchmarks/c/weaver/parallel-lamport.wvr.c[4210,4223] [2022-11-18 19:32:03,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:32:03,271 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:32:03,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:03 WrapperNode [2022-11-18 19:32:03,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:32:03,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:32:03,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:32:03,273 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:32:03,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:03" (1/1) ... [2022-11-18 19:32:03,302 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:03" (1/1) ... [2022-11-18 19:32:03,337 INFO L138 Inliner]: procedures = 25, calls = 89, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 235 [2022-11-18 19:32:03,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:32:03,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:32:03,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:32:03,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:32:03,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:03" (1/1) ... [2022-11-18 19:32:03,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:03" (1/1) ... [2022-11-18 19:32:03,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:03" (1/1) ... [2022-11-18 19:32:03,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:03" (1/1) ... [2022-11-18 19:32:03,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:03" (1/1) ... [2022-11-18 19:32:03,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:03" (1/1) ... [2022-11-18 19:32:03,375 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:03" (1/1) ... [2022-11-18 19:32:03,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:03" (1/1) ... [2022-11-18 19:32:03,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:32:03,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:32:03,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:32:03,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:32:03,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:03" (1/1) ... [2022-11-18 19:32:03,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:32:03,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:03,433 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:03,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:32:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:32:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:32:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:32:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:32:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:32:03,485 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:32:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:32:03,485 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:32:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 19:32:03,485 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 19:32:03,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:32:03,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 19:32:03,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 19:32:03,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:32:03,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:32:03,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:32:03,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:32:03,489 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:32:03,622 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:32:03,625 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:32:04,199 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:32:04,344 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:32:04,345 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 19:32:04,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:32:04 BoogieIcfgContainer [2022-11-18 19:32:04,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:32:04,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:32:04,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:32:04,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:32:04,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:32:02" (1/3) ... [2022-11-18 19:32:04,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292de8c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:32:04, skipping insertion in model container [2022-11-18 19:32:04,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:03" (2/3) ... [2022-11-18 19:32:04,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292de8c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:32:04, skipping insertion in model container [2022-11-18 19:32:04,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:32:04" (3/3) ... [2022-11-18 19:32:04,360 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2022-11-18 19:32:04,373 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:32:04,387 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:32:04,387 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:32:04,387 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:32:04,470 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 19:32:04,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 186 transitions, 396 flow [2022-11-18 19:32:04,599 INFO L130 PetriNetUnfolder]: 7/183 cut-off events. [2022-11-18 19:32:04,601 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 19:32:04,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 183 events. 7/183 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 100 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 150. Up to 2 conditions per place. [2022-11-18 19:32:04,608 INFO L82 GeneralOperation]: Start removeDead. Operand has 189 places, 186 transitions, 396 flow [2022-11-18 19:32:04,619 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 172 transitions, 362 flow [2022-11-18 19:32:04,660 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:32:04,668 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;@1e7a855d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:32:04,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-18 19:32:04,779 INFO L130 PetriNetUnfolder]: 7/171 cut-off events. [2022-11-18 19:32:04,782 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 19:32:04,783 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:04,784 INFO L209 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] [2022-11-18 19:32:04,785 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)] === [2022-11-18 19:32:04,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:04,792 INFO L85 PathProgramCache]: Analyzing trace with hash 144384746, now seen corresponding path program 1 times [2022-11-18 19:32:04,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:04,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229969245] [2022-11-18 19:32:04,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:04,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:05,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:05,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:05,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229969245] [2022-11-18 19:32:05,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229969245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:05,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:05,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:32:05,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930476599] [2022-11-18 19:32:05,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:05,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:32:05,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:05,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:32:05,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:32:05,461 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 186 [2022-11-18 19:32:05,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 172 transitions, 362 flow. Second operand has 2 states, 2 states have (on average 171.0) internal successors, (342), 2 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:05,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:05,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 186 [2022-11-18 19:32:05,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:05,845 INFO L130 PetriNetUnfolder]: 215/676 cut-off events. [2022-11-18 19:32:05,845 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2022-11-18 19:32:05,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1137 conditions, 676 events. 215/676 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3345 event pairs, 214 based on Foata normal form. 6/667 useless extension candidates. Maximal degree in co-relation 948. Up to 370 conditions per place. [2022-11-18 19:32:05,860 INFO L137 encePairwiseOnDemand]: 180/186 looper letters, 17 selfloop transitions, 0 changer transitions 5/166 dead transitions. [2022-11-18 19:32:05,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 166 transitions, 384 flow [2022-11-18 19:32:05,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:32:05,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 19:32:05,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 347 transitions. [2022-11-18 19:32:05,892 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9327956989247311 [2022-11-18 19:32:05,893 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 347 transitions. [2022-11-18 19:32:05,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 347 transitions. [2022-11-18 19:32:05,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:05,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 347 transitions. [2022-11-18 19:32:05,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 173.5) internal successors, (347), 2 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:05,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:05,925 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:05,928 INFO L175 Difference]: Start difference. First operand has 175 places, 172 transitions, 362 flow. Second operand 2 states and 347 transitions. [2022-11-18 19:32:05,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 166 transitions, 384 flow [2022-11-18 19:32:05,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 166 transitions, 372 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 19:32:05,942 INFO L231 Difference]: Finished difference. Result has 170 places, 161 transitions, 328 flow [2022-11-18 19:32:05,944 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=328, PETRI_PLACES=170, PETRI_TRANSITIONS=161} [2022-11-18 19:32:05,952 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, -5 predicate places. [2022-11-18 19:32:05,953 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 161 transitions, 328 flow [2022-11-18 19:32:05,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 171.0) internal successors, (342), 2 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:05,953 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:05,954 INFO L209 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] [2022-11-18 19:32:05,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:32:05,955 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)] === [2022-11-18 19:32:05,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:05,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1596419683, now seen corresponding path program 1 times [2022-11-18 19:32:05,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:05,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641672189] [2022-11-18 19:32:05,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:05,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:06,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:06,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:06,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641672189] [2022-11-18 19:32:06,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641672189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:06,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:06,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:32:06,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355360333] [2022-11-18 19:32:06,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:06,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:32:06,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:06,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:32:06,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:32:06,908 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 186 [2022-11-18 19:32:06,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 161 transitions, 328 flow. Second operand has 8 states, 8 states have (on average 127.125) internal successors, (1017), 8 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:06,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:06,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 186 [2022-11-18 19:32:06,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:07,402 INFO L130 PetriNetUnfolder]: 312/872 cut-off events. [2022-11-18 19:32:07,402 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-11-18 19:32:07,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1490 conditions, 872 events. 312/872 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4440 event pairs, 311 based on Foata normal form. 1/868 useless extension candidates. Maximal degree in co-relation 1487. Up to 554 conditions per place. [2022-11-18 19:32:07,409 INFO L137 encePairwiseOnDemand]: 176/186 looper letters, 51 selfloop transitions, 6 changer transitions 8/173 dead transitions. [2022-11-18 19:32:07,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 173 transitions, 482 flow [2022-11-18 19:32:07,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:32:07,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:32:07,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1155 transitions. [2022-11-18 19:32:07,415 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6899641577060932 [2022-11-18 19:32:07,415 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1155 transitions. [2022-11-18 19:32:07,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1155 transitions. [2022-11-18 19:32:07,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:07,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1155 transitions. [2022-11-18 19:32:07,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.33333333333334) internal successors, (1155), 9 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:07,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:07,426 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:07,426 INFO L175 Difference]: Start difference. First operand has 170 places, 161 transitions, 328 flow. Second operand 9 states and 1155 transitions. [2022-11-18 19:32:07,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 173 transitions, 482 flow [2022-11-18 19:32:07,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 173 transitions, 482 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:32:07,433 INFO L231 Difference]: Finished difference. Result has 177 places, 162 transitions, 354 flow [2022-11-18 19:32:07,434 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=354, PETRI_PLACES=177, PETRI_TRANSITIONS=162} [2022-11-18 19:32:07,434 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 2 predicate places. [2022-11-18 19:32:07,434 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 162 transitions, 354 flow [2022-11-18 19:32:07,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 127.125) internal successors, (1017), 8 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:07,435 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:07,436 INFO L209 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] [2022-11-18 19:32:07,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:32:07,436 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)] === [2022-11-18 19:32:07,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:07,438 INFO L85 PathProgramCache]: Analyzing trace with hash 800678061, now seen corresponding path program 1 times [2022-11-18 19:32:07,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:07,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903804633] [2022-11-18 19:32:07,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:07,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:09,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:09,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:09,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903804633] [2022-11-18 19:32:09,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903804633] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:32:09,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994407525] [2022-11-18 19:32:09,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:09,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:09,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:09,690 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:32:09,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:32:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:09,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-18 19:32:09,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:10,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-18 19:32:10,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:10,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:32:10,755 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-18 19:32:10,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-11-18 19:32:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:11,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994407525] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:32:11,474 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:32:11,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 20, 15] total 39 [2022-11-18 19:32:11,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356110789] [2022-11-18 19:32:11,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:32:11,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-18 19:32:11,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:11,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-18 19:32:11,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1276, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 19:32:11,486 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 186 [2022-11-18 19:32:11,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 162 transitions, 354 flow. Second operand has 39 states, 39 states have (on average 101.12820512820512) internal successors, (3944), 39 states have internal predecessors, (3944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:11,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:11,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 186 [2022-11-18 19:32:11,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:18,395 INFO L130 PetriNetUnfolder]: 2351/5376 cut-off events. [2022-11-18 19:32:18,395 INFO L131 PetriNetUnfolder]: For 125/125 co-relation queries the response was YES. [2022-11-18 19:32:18,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9423 conditions, 5376 events. 2351/5376 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 44501 event pairs, 950 based on Foata normal form. 4/5319 useless extension candidates. Maximal degree in co-relation 9415. Up to 1216 conditions per place. [2022-11-18 19:32:18,430 INFO L137 encePairwiseOnDemand]: 150/186 looper letters, 287 selfloop transitions, 116 changer transitions 70/557 dead transitions. [2022-11-18 19:32:18,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 557 transitions, 2170 flow [2022-11-18 19:32:18,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-18 19:32:18,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-11-18 19:32:18,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 6491 transitions. [2022-11-18 19:32:18,445 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.562868539715574 [2022-11-18 19:32:18,445 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 6491 transitions. [2022-11-18 19:32:18,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 6491 transitions. [2022-11-18 19:32:18,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:18,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 6491 transitions. [2022-11-18 19:32:18,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 104.69354838709677) internal successors, (6491), 62 states have internal predecessors, (6491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:18,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 186.0) internal successors, (11718), 63 states have internal predecessors, (11718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:18,492 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 186.0) internal successors, (11718), 63 states have internal predecessors, (11718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:18,492 INFO L175 Difference]: Start difference. First operand has 177 places, 162 transitions, 354 flow. Second operand 62 states and 6491 transitions. [2022-11-18 19:32:18,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 557 transitions, 2170 flow [2022-11-18 19:32:18,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 557 transitions, 2148 flow, removed 6 selfloop flow, removed 7 redundant places. [2022-11-18 19:32:18,509 INFO L231 Difference]: Finished difference. Result has 269 places, 289 transitions, 1146 flow [2022-11-18 19:32:18,510 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=1146, PETRI_PLACES=269, PETRI_TRANSITIONS=289} [2022-11-18 19:32:18,512 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 94 predicate places. [2022-11-18 19:32:18,513 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 289 transitions, 1146 flow [2022-11-18 19:32:18,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 101.12820512820512) internal successors, (3944), 39 states have internal predecessors, (3944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:18,515 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:18,515 INFO L209 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] [2022-11-18 19:32:18,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 19:32:18,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-18 19:32:18,724 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)] === [2022-11-18 19:32:18,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:18,725 INFO L85 PathProgramCache]: Analyzing trace with hash 2116013445, now seen corresponding path program 2 times [2022-11-18 19:32:18,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:18,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397912470] [2022-11-18 19:32:18,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:18,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:19,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:32:19,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:19,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397912470] [2022-11-18 19:32:19,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397912470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:19,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:19,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:32:19,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202685561] [2022-11-18 19:32:19,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:19,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:32:19,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:19,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:32:19,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:32:19,132 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 186 [2022-11-18 19:32:19,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 289 transitions, 1146 flow. Second operand has 7 states, 7 states have (on average 152.42857142857142) internal successors, (1067), 7 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:19,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:19,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 186 [2022-11-18 19:32:19,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:21,453 INFO L130 PetriNetUnfolder]: 3678/8176 cut-off events. [2022-11-18 19:32:21,459 INFO L131 PetriNetUnfolder]: For 29114/29269 co-relation queries the response was YES. [2022-11-18 19:32:21,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23833 conditions, 8176 events. 3678/8176 cut-off events. For 29114/29269 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 72324 event pairs, 642 based on Foata normal form. 99/8104 useless extension candidates. Maximal degree in co-relation 23787. Up to 1996 conditions per place. [2022-11-18 19:32:21,617 INFO L137 encePairwiseOnDemand]: 176/186 looper letters, 447 selfloop transitions, 18 changer transitions 0/629 dead transitions. [2022-11-18 19:32:21,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 629 transitions, 3830 flow [2022-11-18 19:32:21,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:32:21,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:32:21,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1444 transitions. [2022-11-18 19:32:21,642 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8626045400238949 [2022-11-18 19:32:21,659 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1444 transitions. [2022-11-18 19:32:21,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1444 transitions. [2022-11-18 19:32:21,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:21,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1444 transitions. [2022-11-18 19:32:21,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 160.44444444444446) internal successors, (1444), 9 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:21,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:21,691 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:21,691 INFO L175 Difference]: Start difference. First operand has 269 places, 289 transitions, 1146 flow. Second operand 9 states and 1444 transitions. [2022-11-18 19:32:21,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 629 transitions, 3830 flow [2022-11-18 19:32:21,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 629 transitions, 3741 flow, removed 35 selfloop flow, removed 21 redundant places. [2022-11-18 19:32:21,964 INFO L231 Difference]: Finished difference. Result has 248 places, 303 transitions, 1195 flow [2022-11-18 19:32:21,965 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1195, PETRI_PLACES=248, PETRI_TRANSITIONS=303} [2022-11-18 19:32:21,965 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 73 predicate places. [2022-11-18 19:32:21,966 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 303 transitions, 1195 flow [2022-11-18 19:32:21,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 152.42857142857142) internal successors, (1067), 7 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:21,967 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:21,967 INFO L209 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] [2022-11-18 19:32:21,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:32:21,968 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)] === [2022-11-18 19:32:21,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:21,968 INFO L85 PathProgramCache]: Analyzing trace with hash 779134557, now seen corresponding path program 3 times [2022-11-18 19:32:21,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:21,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610690978] [2022-11-18 19:32:21,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:21,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:22,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:32:22,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:22,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610690978] [2022-11-18 19:32:22,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610690978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:22,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:22,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:32:22,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011131258] [2022-11-18 19:32:22,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:22,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:32:22,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:22,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:32:22,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:32:22,219 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 186 [2022-11-18 19:32:22,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 303 transitions, 1195 flow. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:22,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:22,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 186 [2022-11-18 19:32:22,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:23,468 INFO L130 PetriNetUnfolder]: 2427/6419 cut-off events. [2022-11-18 19:32:23,468 INFO L131 PetriNetUnfolder]: For 16452/16561 co-relation queries the response was YES. [2022-11-18 19:32:23,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18174 conditions, 6419 events. 2427/6419 cut-off events. For 16452/16561 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 60520 event pairs, 1372 based on Foata normal form. 55/6250 useless extension candidates. Maximal degree in co-relation 18135. Up to 3588 conditions per place. [2022-11-18 19:32:23,570 INFO L137 encePairwiseOnDemand]: 183/186 looper letters, 138 selfloop transitions, 2 changer transitions 0/328 dead transitions. [2022-11-18 19:32:23,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 328 transitions, 1619 flow [2022-11-18 19:32:23,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:32:23,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:32:23,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2022-11-18 19:32:23,572 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9032258064516129 [2022-11-18 19:32:23,573 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2022-11-18 19:32:23,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2022-11-18 19:32:23,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:23,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2022-11-18 19:32:23,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:23,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:23,577 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:23,578 INFO L175 Difference]: Start difference. First operand has 248 places, 303 transitions, 1195 flow. Second operand 3 states and 504 transitions. [2022-11-18 19:32:23,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 328 transitions, 1619 flow [2022-11-18 19:32:23,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 328 transitions, 1619 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:32:23,704 INFO L231 Difference]: Finished difference. Result has 251 places, 303 transitions, 1203 flow [2022-11-18 19:32:23,704 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1203, PETRI_PLACES=251, PETRI_TRANSITIONS=303} [2022-11-18 19:32:23,705 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 76 predicate places. [2022-11-18 19:32:23,706 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 303 transitions, 1203 flow [2022-11-18 19:32:23,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:23,706 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:23,707 INFO L209 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] [2022-11-18 19:32:23,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:32:23,707 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)] === [2022-11-18 19:32:23,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:23,708 INFO L85 PathProgramCache]: Analyzing trace with hash -824806757, now seen corresponding path program 4 times [2022-11-18 19:32:23,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:23,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405444892] [2022-11-18 19:32:23,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:23,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:25,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:25,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:25,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405444892] [2022-11-18 19:32:25,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405444892] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:32:25,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452634874] [2022-11-18 19:32:25,283 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:32:25,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:25,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:25,284 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:32:25,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:32:25,418 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:32:25,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:32:25,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-18 19:32:25,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:26,307 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-18 19:32:26,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 13 [2022-11-18 19:32:26,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:26,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:32:27,184 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:32:27,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 66 [2022-11-18 19:32:28,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:28,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452634874] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:32:28,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:32:28,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 19, 19] total 51 [2022-11-18 19:32:28,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645167764] [2022-11-18 19:32:28,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:32:28,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-18 19:32:28,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:28,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-18 19:32:28,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=2248, Unknown=0, NotChecked=0, Total=2550 [2022-11-18 19:32:28,117 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 186 [2022-11-18 19:32:28,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 303 transitions, 1203 flow. Second operand has 51 states, 51 states have (on average 100.37254901960785) internal successors, (5119), 51 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:28,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:28,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 186 [2022-11-18 19:32:28,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:54,166 INFO L130 PetriNetUnfolder]: 11294/26827 cut-off events. [2022-11-18 19:32:54,166 INFO L131 PetriNetUnfolder]: For 81336/81558 co-relation queries the response was YES. [2022-11-18 19:32:54,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81345 conditions, 26827 events. 11294/26827 cut-off events. For 81336/81558 co-relation queries the response was YES. Maximal size of possible extension queue 2166. Compared 315551 event pairs, 2501 based on Foata normal form. 33/26294 useless extension candidates. Maximal degree in co-relation 81304. Up to 8295 conditions per place. [2022-11-18 19:32:54,515 INFO L137 encePairwiseOnDemand]: 139/186 looper letters, 605 selfloop transitions, 797 changer transitions 31/1531 dead transitions. [2022-11-18 19:32:54,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 1531 transitions, 11402 flow [2022-11-18 19:32:54,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2022-11-18 19:32:54,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2022-11-18 19:32:54,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 17829 transitions. [2022-11-18 19:32:54,560 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5508898776418243 [2022-11-18 19:32:54,560 INFO L72 ComplementDD]: Start complementDD. Operand 174 states and 17829 transitions. [2022-11-18 19:32:54,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 174 states and 17829 transitions. [2022-11-18 19:32:54,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:54,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 174 states and 17829 transitions. [2022-11-18 19:32:54,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 175 states, 174 states have (on average 102.46551724137932) internal successors, (17829), 174 states have internal predecessors, (17829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:54,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 175 states, 175 states have (on average 186.0) internal successors, (32550), 175 states have internal predecessors, (32550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:54,846 INFO L81 ComplementDD]: Finished complementDD. Result has 175 states, 175 states have (on average 186.0) internal successors, (32550), 175 states have internal predecessors, (32550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:54,846 INFO L175 Difference]: Start difference. First operand has 251 places, 303 transitions, 1203 flow. Second operand 174 states and 17829 transitions. [2022-11-18 19:32:54,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 1531 transitions, 11402 flow [2022-11-18 19:32:56,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 1531 transitions, 11398 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:32:56,277 INFO L231 Difference]: Finished difference. Result has 480 places, 1196 transitions, 10303 flow [2022-11-18 19:32:56,277 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=174, PETRI_FLOW=10303, PETRI_PLACES=480, PETRI_TRANSITIONS=1196} [2022-11-18 19:32:56,278 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 305 predicate places. [2022-11-18 19:32:56,278 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 1196 transitions, 10303 flow [2022-11-18 19:32:56,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 100.37254901960785) internal successors, (5119), 51 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:56,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:56,281 INFO L209 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] [2022-11-18 19:32:56,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:56,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:56,486 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)] === [2022-11-18 19:32:56,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:56,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1949835693, now seen corresponding path program 5 times [2022-11-18 19:32:56,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:56,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452569235] [2022-11-18 19:32:56,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:56,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:58,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:58,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452569235] [2022-11-18 19:32:58,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452569235] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:32:58,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960817351] [2022-11-18 19:32:58,542 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:32:58,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:58,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:58,543 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:32:58,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:32:58,694 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:32:58,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:32:58,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-18 19:32:58,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:59,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-18 19:32:59,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:59,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:32:59,478 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-18 19:32:59,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-11-18 19:33:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:00,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960817351] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:33:00,016 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:33:00,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 14] total 39 [2022-11-18 19:33:00,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663233109] [2022-11-18 19:33:00,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:33:00,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-18 19:33:00,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:00,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-18 19:33:00,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1294, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 19:33:00,022 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 186 [2022-11-18 19:33:00,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 1196 transitions, 10303 flow. Second operand has 39 states, 39 states have (on average 103.1025641025641) internal successors, (4021), 39 states have internal predecessors, (4021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:00,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:00,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 186 [2022-11-18 19:33:00,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:12,198 INFO L130 PetriNetUnfolder]: 11820/29466 cut-off events. [2022-11-18 19:33:12,199 INFO L131 PetriNetUnfolder]: For 839935/842140 co-relation queries the response was YES. [2022-11-18 19:33:12,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171253 conditions, 29466 events. 11820/29466 cut-off events. For 839935/842140 co-relation queries the response was YES. Maximal size of possible extension queue 2408. Compared 362830 event pairs, 3775 based on Foata normal form. 274/29122 useless extension candidates. Maximal degree in co-relation 171154. Up to 7244 conditions per place. [2022-11-18 19:33:13,038 INFO L137 encePairwiseOnDemand]: 158/186 looper letters, 823 selfloop transitions, 534 changer transitions 32/1489 dead transitions. [2022-11-18 19:33:13,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 1489 transitions, 16585 flow [2022-11-18 19:33:13,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 19:33:13,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-18 19:33:13,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2873 transitions. [2022-11-18 19:33:13,043 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5720828355236958 [2022-11-18 19:33:13,044 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2873 transitions. [2022-11-18 19:33:13,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2873 transitions. [2022-11-18 19:33:13,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:13,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2873 transitions. [2022-11-18 19:33:13,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 106.4074074074074) internal successors, (2873), 27 states have internal predecessors, (2873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:13,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 186.0) internal successors, (5208), 28 states have internal predecessors, (5208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:13,062 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 186.0) internal successors, (5208), 28 states have internal predecessors, (5208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:13,062 INFO L175 Difference]: Start difference. First operand has 480 places, 1196 transitions, 10303 flow. Second operand 27 states and 2873 transitions. [2022-11-18 19:33:13,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 1489 transitions, 16585 flow [2022-11-18 19:33:26,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 1489 transitions, 13234 flow, removed 1657 selfloop flow, removed 23 redundant places. [2022-11-18 19:33:26,035 INFO L231 Difference]: Finished difference. Result has 487 places, 1267 transitions, 10851 flow [2022-11-18 19:33:26,036 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=8054, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=463, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=696, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=10851, PETRI_PLACES=487, PETRI_TRANSITIONS=1267} [2022-11-18 19:33:26,037 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 312 predicate places. [2022-11-18 19:33:26,037 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 1267 transitions, 10851 flow [2022-11-18 19:33:26,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 103.1025641025641) internal successors, (4021), 39 states have internal predecessors, (4021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:26,039 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:26,039 INFO L209 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] [2022-11-18 19:33:26,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 19:33:26,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:26,245 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)] === [2022-11-18 19:33:26,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:26,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1369729053, now seen corresponding path program 6 times [2022-11-18 19:33:26,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:26,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861646048] [2022-11-18 19:33:26,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:26,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:27,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:27,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:27,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861646048] [2022-11-18 19:33:27,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861646048] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:27,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206888131] [2022-11-18 19:33:27,973 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:33:27,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:27,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:27,975 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:27,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:33:28,120 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-11-18 19:33:28,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:33:28,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 19:33:28,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:28,553 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:33:28,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-11-18 19:33:28,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:33:28,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:33:28,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206888131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:28,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:33:28,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [27] total 35 [2022-11-18 19:33:28,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223296158] [2022-11-18 19:33:28,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:28,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:33:28,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:28,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:33:28,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1082, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:33:28,582 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 186 [2022-11-18 19:33:28,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 1267 transitions, 10851 flow. Second operand has 12 states, 12 states have (on average 120.83333333333333) internal successors, (1450), 12 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:28,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:28,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 186 [2022-11-18 19:33:28,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:40,848 INFO L130 PetriNetUnfolder]: 13075/32471 cut-off events. [2022-11-18 19:33:40,848 INFO L131 PetriNetUnfolder]: For 917552/919334 co-relation queries the response was YES. [2022-11-18 19:33:41,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190803 conditions, 32471 events. 13075/32471 cut-off events. For 917552/919334 co-relation queries the response was YES. Maximal size of possible extension queue 2595. Compared 402906 event pairs, 1214 based on Foata normal form. 199/32044 useless extension candidates. Maximal degree in co-relation 190700. Up to 16351 conditions per place. [2022-11-18 19:33:41,835 INFO L137 encePairwiseOnDemand]: 165/186 looper letters, 1149 selfloop transitions, 228 changer transitions 24/1527 dead transitions. [2022-11-18 19:33:41,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 1527 transitions, 16572 flow [2022-11-18 19:33:41,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:33:41,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 19:33:41,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2010 transitions. [2022-11-18 19:33:41,840 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6754032258064516 [2022-11-18 19:33:41,840 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2010 transitions. [2022-11-18 19:33:41,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2010 transitions. [2022-11-18 19:33:41,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:41,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2010 transitions. [2022-11-18 19:33:41,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 125.625) internal successors, (2010), 16 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:41,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 186.0) internal successors, (3162), 17 states have internal predecessors, (3162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:41,852 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 186.0) internal successors, (3162), 17 states have internal predecessors, (3162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:41,852 INFO L175 Difference]: Start difference. First operand has 487 places, 1267 transitions, 10851 flow. Second operand 16 states and 2010 transitions. [2022-11-18 19:33:41,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 1527 transitions, 16572 flow [2022-11-18 19:33:48,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 1527 transitions, 16467 flow, removed 33 selfloop flow, removed 19 redundant places. [2022-11-18 19:33:48,930 INFO L231 Difference]: Finished difference. Result has 489 places, 1371 transitions, 12802 flow [2022-11-18 19:33:48,931 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=10790, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1077, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=12802, PETRI_PLACES=489, PETRI_TRANSITIONS=1371} [2022-11-18 19:33:48,932 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 314 predicate places. [2022-11-18 19:33:48,932 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 1371 transitions, 12802 flow [2022-11-18 19:33:48,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 120.83333333333333) internal successors, (1450), 12 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:48,933 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:48,933 INFO L209 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] [2022-11-18 19:33:48,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:49,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 19:33:49,139 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)] === [2022-11-18 19:33:49,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:49,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1397822559, now seen corresponding path program 7 times [2022-11-18 19:33:49,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:49,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716189130] [2022-11-18 19:33:49,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:49,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:51,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:51,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:51,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716189130] [2022-11-18 19:33:51,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716189130] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:51,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904389165] [2022-11-18 19:33:51,006 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:33:51,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:51,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:51,011 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:51,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f5eece-79f7-4d12-90ca-139a7ee8c5d1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:33:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:51,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-18 19:33:51,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:51,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:33:51,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:51,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:33:51,752 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-18 19:33:51,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-11-18 19:33:52,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:52,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904389165] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:33:52,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:33:52,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 20, 14] total 40 [2022-11-18 19:33:52,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008291501] [2022-11-18 19:33:52,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:33:52,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-18 19:33:52,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:52,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-18 19:33:52,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1371, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 19:33:52,232 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 186 [2022-11-18 19:33:52,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 1371 transitions, 12802 flow. Second operand has 40 states, 40 states have (on average 100.95) internal successors, (4038), 40 states have internal predecessors, (4038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:52,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:52,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 186 [2022-11-18 19:33:52,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand