./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS --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 b699de581afb3d801299d89a35eee78f9e3cb86ad1a23fab537b92eb394c5e62 --- 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-4e7fbc6 [2022-11-23 02:42:48,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:42:48,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:42:48,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:42:48,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:42:48,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:42:48,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:42:48,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:42:48,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:42:48,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:42:48,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:42:48,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:42:48,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:42:48,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:42:48,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:42:48,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:42:48,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:42:48,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:42:48,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:42:48,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:42:48,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:42:48,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:42:48,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:42:48,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:42:48,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:42:48,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:42:48,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:42:48,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:42:48,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:42:48,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:42:48,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:42:48,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:42:48,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:42:48,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:42:48,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:42:48,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:42:48,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:42:48,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:42:48,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:42:48,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:42:48,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:42:48,422 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 02:42:48,472 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:42:48,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:42:48,473 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:42:48,473 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:42:48,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:42:48,474 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:42:48,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:42:48,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:42:48,483 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:42:48,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:42:48,485 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:42:48,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:42:48,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:42:48,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:42:48,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:42:48,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:42:48,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:42:48,486 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:42:48,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:42:48,487 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:42:48,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:42:48,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:42:48,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:42:48,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:42:48,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:42:48,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:42:48,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:42:48,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:42:48,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:42:48,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:42:48,490 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:42:48,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:42:48,491 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:42:48,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:42:48,492 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b699de581afb3d801299d89a35eee78f9e3cb86ad1a23fab537b92eb394c5e62 [2022-11-23 02:42:48,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:42:48,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:42:48,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:42:48,853 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:42:48,853 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:42:48,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2022-11-23 02:42:52,039 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:42:52,235 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:42:52,235 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2022-11-23 02:42:52,242 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/data/118df777b/241fc7d8054f45d6b03980a6e1796b73/FLAG381acf30b [2022-11-23 02:42:52,264 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/data/118df777b/241fc7d8054f45d6b03980a6e1796b73 [2022-11-23 02:42:52,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:42:52,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:42:52,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:42:52,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:42:52,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:42:52,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:42:52" (1/1) ... [2022-11-23 02:42:52,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ff5df98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:52, skipping insertion in model container [2022-11-23 02:42:52,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:42:52" (1/1) ... [2022-11-23 02:42:52,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:42:52,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:42:52,519 WARN L237 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_083248c3-6857-4b60-bc4c-93c9a446b74f/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c[2856,2869] [2022-11-23 02:42:52,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:42:52,535 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:42:52,560 WARN L237 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_083248c3-6857-4b60-bc4c-93c9a446b74f/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c[2856,2869] [2022-11-23 02:42:52,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:42:52,577 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:42:52,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:52 WrapperNode [2022-11-23 02:42:52,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:42:52,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:42:52,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:42:52,579 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:42:52,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:52" (1/1) ... [2022-11-23 02:42:52,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:52" (1/1) ... [2022-11-23 02:42:52,627 INFO L138 Inliner]: procedures = 22, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-11-23 02:42:52,629 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:42:52,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:42:52,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:42:52,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:42:52,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:52" (1/1) ... [2022-11-23 02:42:52,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:52" (1/1) ... [2022-11-23 02:42:52,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:52" (1/1) ... [2022-11-23 02:42:52,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:52" (1/1) ... [2022-11-23 02:42:52,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:52" (1/1) ... [2022-11-23 02:42:52,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:52" (1/1) ... [2022-11-23 02:42:52,677 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:52" (1/1) ... [2022-11-23 02:42:52,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:52" (1/1) ... [2022-11-23 02:42:52,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:42:52,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:42:52,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:42:52,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:42:52,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:52" (1/1) ... [2022-11-23 02:42:52,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:42:52,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:42:52,739 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:42:52,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:42:52,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:42:52,806 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 02:42:52,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 02:42:52,806 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 02:42:52,807 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 02:42:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-23 02:42:52,807 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-23 02:42:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:42:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:42:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:42:52,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 02:42:52,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 02:42:52,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:42:52,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:42:52,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 02:42:52,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:42:52,810 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 02:42:52,926 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:42:52,929 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:42:53,294 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:42:53,351 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:42:53,352 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-23 02:42:53,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:42:53 BoogieIcfgContainer [2022-11-23 02:42:53,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:42:53,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:42:53,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:42:53,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:42:53,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:42:52" (1/3) ... [2022-11-23 02:42:53,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a581cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:42:53, skipping insertion in model container [2022-11-23 02:42:53,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:52" (2/3) ... [2022-11-23 02:42:53,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a581cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:42:53, skipping insertion in model container [2022-11-23 02:42:53,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:42:53" (3/3) ... [2022-11-23 02:42:53,383 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2022-11-23 02:42:53,396 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 02:42:53,409 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:42:53,409 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 02:42:53,409 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 02:42:53,590 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-23 02:42:53,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 129 transitions, 282 flow [2022-11-23 02:42:53,783 INFO L130 PetriNetUnfolder]: 16/126 cut-off events. [2022-11-23 02:42:53,783 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 02:42:53,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 126 events. 16/126 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 125 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 81. Up to 4 conditions per place. [2022-11-23 02:42:53,794 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 129 transitions, 282 flow [2022-11-23 02:42:53,802 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 115 transitions, 248 flow [2022-11-23 02:42:53,807 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:42:53,838 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 115 transitions, 248 flow [2022-11-23 02:42:53,848 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 115 transitions, 248 flow [2022-11-23 02:42:53,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 115 transitions, 248 flow [2022-11-23 02:42:53,923 INFO L130 PetriNetUnfolder]: 16/115 cut-off events. [2022-11-23 02:42:53,928 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 02:42:53,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 115 events. 16/115 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 124 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 81. Up to 4 conditions per place. [2022-11-23 02:42:53,934 INFO L119 LiptonReduction]: Number of co-enabled transitions 2958 [2022-11-23 02:42:59,182 INFO L134 LiptonReduction]: Checked pairs total: 2522 [2022-11-23 02:42:59,183 INFO L136 LiptonReduction]: Total number of compositions: 110 [2022-11-23 02:42:59,210 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:42:59,220 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;@69b81717, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:42:59,221 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-23 02:42:59,240 INFO L130 PetriNetUnfolder]: 3/18 cut-off events. [2022-11-23 02:42:59,241 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 02:42:59,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:42:59,243 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:59,243 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)] === [2022-11-23 02:42:59,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:59,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1188874995, now seen corresponding path program 1 times [2022-11-23 02:42:59,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:59,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842007251] [2022-11-23 02:42:59,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:59,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:59,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:42:59,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:59,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842007251] [2022-11-23 02:42:59,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842007251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:59,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:59,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:42:59,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542806467] [2022-11-23 02:42:59,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:59,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:42:59,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:59,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:42:59,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:42:59,709 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 239 [2022-11-23 02:42:59,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:42:59,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:42:59,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 239 [2022-11-23 02:42:59,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:42:59,846 INFO L130 PetriNetUnfolder]: 111/168 cut-off events. [2022-11-23 02:42:59,847 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-11-23 02:42:59,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 168 events. 111/168 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 334 event pairs, 17 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 244. Up to 105 conditions per place. [2022-11-23 02:42:59,852 INFO L137 encePairwiseOnDemand]: 236/239 looper letters, 27 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2022-11-23 02:42:59,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 140 flow [2022-11-23 02:42:59,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:42:59,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:42:59,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2022-11-23 02:42:59,880 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5104602510460251 [2022-11-23 02:42:59,881 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2022-11-23 02:42:59,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2022-11-23 02:42:59,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:42:59,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2022-11-23 02:42:59,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:42:59,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:42:59,906 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:42:59,908 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 56 flow. Second operand 3 states and 366 transitions. [2022-11-23 02:42:59,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 140 flow [2022-11-23 02:42:59,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 29 transitions, 124 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-23 02:42:59,914 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 56 flow [2022-11-23 02:42:59,917 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2022-11-23 02:42:59,921 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2022-11-23 02:42:59,921 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 56 flow [2022-11-23 02:42:59,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:42:59,922 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:42:59,922 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:59,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:42:59,923 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)] === [2022-11-23 02:42:59,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:59,923 INFO L85 PathProgramCache]: Analyzing trace with hash 321002317, now seen corresponding path program 1 times [2022-11-23 02:42:59,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:59,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420755786] [2022-11-23 02:42:59,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:59,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:00,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:43:00,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:43:00,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420755786] [2022-11-23 02:43:00,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420755786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:43:00,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:43:00,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:43:00,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987767484] [2022-11-23 02:43:00,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:43:00,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:43:00,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:43:00,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:43:00,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:43:00,116 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 239 [2022-11-23 02:43:00,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:00,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:43:00,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 239 [2022-11-23 02:43:00,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:43:00,260 INFO L130 PetriNetUnfolder]: 151/226 cut-off events. [2022-11-23 02:43:00,260 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-11-23 02:43:00,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 226 events. 151/226 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 556 event pairs, 11 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 188. Up to 185 conditions per place. [2022-11-23 02:43:00,269 INFO L137 encePairwiseOnDemand]: 236/239 looper letters, 29 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2022-11-23 02:43:00,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 31 transitions, 149 flow [2022-11-23 02:43:00,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:43:00,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:43:00,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2022-11-23 02:43:00,274 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5104602510460251 [2022-11-23 02:43:00,274 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2022-11-23 02:43:00,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2022-11-23 02:43:00,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:43:00,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2022-11-23 02:43:00,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:00,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:00,284 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:00,284 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 56 flow. Second operand 3 states and 366 transitions. [2022-11-23 02:43:00,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 31 transitions, 149 flow [2022-11-23 02:43:00,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 31 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:43:00,287 INFO L231 Difference]: Finished difference. Result has 25 places, 21 transitions, 66 flow [2022-11-23 02:43:00,287 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=25, PETRI_TRANSITIONS=21} [2022-11-23 02:43:00,288 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2022-11-23 02:43:00,288 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 21 transitions, 66 flow [2022-11-23 02:43:00,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:00,290 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:43:00,290 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:43:00,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:43:00,290 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)] === [2022-11-23 02:43:00,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:43:00,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1841385920, now seen corresponding path program 1 times [2022-11-23 02:43:00,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:43:00,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681096505] [2022-11-23 02:43:00,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:43:00,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:43:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:00,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:43:00,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:43:00,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681096505] [2022-11-23 02:43:00,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681096505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:43:00,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:43:00,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:43:00,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944303558] [2022-11-23 02:43:00,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:43:00,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:43:00,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:43:00,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:43:00,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:43:00,560 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 239 [2022-11-23 02:43:00,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:00,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:43:00,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 239 [2022-11-23 02:43:00,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:43:00,691 INFO L130 PetriNetUnfolder]: 220/325 cut-off events. [2022-11-23 02:43:00,691 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2022-11-23 02:43:00,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 325 events. 220/325 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 870 event pairs, 28 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 596. Up to 243 conditions per place. [2022-11-23 02:43:00,697 INFO L137 encePairwiseOnDemand]: 236/239 looper letters, 31 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2022-11-23 02:43:00,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 33 transitions, 171 flow [2022-11-23 02:43:00,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:43:00,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:43:00,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2022-11-23 02:43:00,699 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5104602510460251 [2022-11-23 02:43:00,699 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2022-11-23 02:43:00,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2022-11-23 02:43:00,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:43:00,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2022-11-23 02:43:00,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:00,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:00,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:00,705 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 66 flow. Second operand 3 states and 366 transitions. [2022-11-23 02:43:00,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 33 transitions, 171 flow [2022-11-23 02:43:00,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 33 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:43:00,708 INFO L231 Difference]: Finished difference. Result has 27 places, 22 transitions, 76 flow [2022-11-23 02:43:00,708 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=27, PETRI_TRANSITIONS=22} [2022-11-23 02:43:00,710 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2022-11-23 02:43:00,710 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 22 transitions, 76 flow [2022-11-23 02:43:00,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:00,711 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:43:00,711 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:43:00,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 02:43:00,712 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)] === [2022-11-23 02:43:00,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:43:00,714 INFO L85 PathProgramCache]: Analyzing trace with hash -578956356, now seen corresponding path program 1 times [2022-11-23 02:43:00,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:43:00,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363243811] [2022-11-23 02:43:00,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:43:00,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:43:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:01,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:43:01,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:43:01,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363243811] [2022-11-23 02:43:01,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363243811] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:43:01,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406121253] [2022-11-23 02:43:01,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:43:01,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:43:01,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:43:01,147 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:43:01,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:43:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:01,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 02:43:01,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:43:01,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:43:01,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:43:02,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:43:02,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406121253] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:43:02,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:43:02,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 9 [2022-11-23 02:43:02,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836596898] [2022-11-23 02:43:02,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:43:02,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 02:43:02,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:43:02,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 02:43:02,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:43:02,402 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 239 [2022-11-23 02:43:02,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 76 flow. Second operand has 10 states, 10 states have (on average 98.9) internal successors, (989), 10 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:02,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:43:02,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 239 [2022-11-23 02:43:02,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:43:02,802 INFO L130 PetriNetUnfolder]: 397/582 cut-off events. [2022-11-23 02:43:02,802 INFO L131 PetriNetUnfolder]: For 224/224 co-relation queries the response was YES. [2022-11-23 02:43:02,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 582 events. 397/582 cut-off events. For 224/224 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1751 event pairs, 10 based on Foata normal form. 0/456 useless extension candidates. Maximal degree in co-relation 637. Up to 177 conditions per place. [2022-11-23 02:43:02,808 INFO L137 encePairwiseOnDemand]: 234/239 looper letters, 112 selfloop transitions, 23 changer transitions 0/135 dead transitions. [2022-11-23 02:43:02,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 135 transitions, 720 flow [2022-11-23 02:43:02,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 02:43:02,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-23 02:43:02,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1539 transitions. [2022-11-23 02:43:02,814 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4292887029288703 [2022-11-23 02:43:02,814 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1539 transitions. [2022-11-23 02:43:02,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1539 transitions. [2022-11-23 02:43:02,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:43:02,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1539 transitions. [2022-11-23 02:43:02,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 102.6) internal successors, (1539), 15 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:02,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 239.0) internal successors, (3824), 16 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:02,830 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 239.0) internal successors, (3824), 16 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:02,830 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 76 flow. Second operand 15 states and 1539 transitions. [2022-11-23 02:43:02,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 135 transitions, 720 flow [2022-11-23 02:43:02,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 135 transitions, 716 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:43:02,835 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 255 flow [2022-11-23 02:43:02,835 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=255, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2022-11-23 02:43:02,836 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2022-11-23 02:43:02,836 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 255 flow [2022-11-23 02:43:02,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 98.9) internal successors, (989), 10 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:02,837 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:43:02,838 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:43:02,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 02:43:03,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:43:03,044 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)] === [2022-11-23 02:43:03,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:43:03,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1938027620, now seen corresponding path program 2 times [2022-11-23 02:43:03,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:43:03,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799164843] [2022-11-23 02:43:03,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:43:03,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:43:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:03,402 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 02:43:03,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:43:03,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799164843] [2022-11-23 02:43:03,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799164843] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:43:03,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293831704] [2022-11-23 02:43:03,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:43:03,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:43:03,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:43:03,406 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:43:03,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:43:03,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 02:43:03,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:43:03,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 02:43:03,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:43:03,632 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 02:43:03,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:43:04,166 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:43:04,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293831704] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:43:04,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:43:04,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 5] total 9 [2022-11-23 02:43:04,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400782442] [2022-11-23 02:43:04,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:43:04,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 02:43:04,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:43:04,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 02:43:04,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:43:04,303 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 239 [2022-11-23 02:43:04,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 255 flow. Second operand has 10 states, 10 states have (on average 94.1) internal successors, (941), 10 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:04,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:43:04,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 239 [2022-11-23 02:43:04,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:43:04,803 INFO L130 PetriNetUnfolder]: 503/734 cut-off events. [2022-11-23 02:43:04,803 INFO L131 PetriNetUnfolder]: For 1172/1172 co-relation queries the response was YES. [2022-11-23 02:43:04,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2837 conditions, 734 events. 503/734 cut-off events. For 1172/1172 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2274 event pairs, 4 based on Foata normal form. 0/650 useless extension candidates. Maximal degree in co-relation 1924. Up to 223 conditions per place. [2022-11-23 02:43:04,812 INFO L137 encePairwiseOnDemand]: 233/239 looper letters, 145 selfloop transitions, 49 changer transitions 0/194 dead transitions. [2022-11-23 02:43:04,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 194 transitions, 1570 flow [2022-11-23 02:43:04,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 02:43:04,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-23 02:43:04,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1558 transitions. [2022-11-23 02:43:04,818 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4074267782426778 [2022-11-23 02:43:04,819 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1558 transitions. [2022-11-23 02:43:04,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1558 transitions. [2022-11-23 02:43:04,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:43:04,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1558 transitions. [2022-11-23 02:43:04,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 97.375) internal successors, (1558), 16 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:04,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 239.0) internal successors, (4063), 17 states have internal predecessors, (4063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:04,833 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 239.0) internal successors, (4063), 17 states have internal predecessors, (4063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:04,833 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 255 flow. Second operand 16 states and 1558 transitions. [2022-11-23 02:43:04,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 194 transitions, 1570 flow [2022-11-23 02:43:04,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 194 transitions, 1269 flow, removed 126 selfloop flow, removed 3 redundant places. [2022-11-23 02:43:04,853 INFO L231 Difference]: Finished difference. Result has 62 places, 89 transitions, 627 flow [2022-11-23 02:43:04,853 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=627, PETRI_PLACES=62, PETRI_TRANSITIONS=89} [2022-11-23 02:43:04,854 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 36 predicate places. [2022-11-23 02:43:04,854 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 89 transitions, 627 flow [2022-11-23 02:43:04,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 94.1) internal successors, (941), 10 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:04,855 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:43:04,856 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:43:04,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:43:05,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:43:05,063 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)] === [2022-11-23 02:43:05,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:43:05,063 INFO L85 PathProgramCache]: Analyzing trace with hash -485710001, now seen corresponding path program 3 times [2022-11-23 02:43:05,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:43:05,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350734828] [2022-11-23 02:43:05,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:43:05,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:43:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:06,915 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:43:06,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:43:06,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350734828] [2022-11-23 02:43:06,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350734828] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:43:06,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021684182] [2022-11-23 02:43:06,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 02:43:06,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:43:06,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:43:06,918 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:43:06,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 02:43:07,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 02:43:07,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:43:07,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 02:43:07,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:43:07,681 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:43:07,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:43:09,029 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:43:09,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021684182] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:43:09,030 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:43:09,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 18 [2022-11-23 02:43:09,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327260863] [2022-11-23 02:43:09,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:43:09,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 02:43:09,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:43:09,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 02:43:09,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2022-11-23 02:43:09,342 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 239 [2022-11-23 02:43:09,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 89 transitions, 627 flow. Second operand has 20 states, 20 states have (on average 79.9) internal successors, (1598), 20 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:09,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:43:09,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 239 [2022-11-23 02:43:09,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:43:15,208 INFO L130 PetriNetUnfolder]: 3510/4986 cut-off events. [2022-11-23 02:43:15,208 INFO L131 PetriNetUnfolder]: For 21375/21375 co-relation queries the response was YES. [2022-11-23 02:43:15,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21365 conditions, 4986 events. 3510/4986 cut-off events. For 21375/21375 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 23100 event pairs, 9 based on Foata normal form. 43/4529 useless extension candidates. Maximal degree in co-relation 12016. Up to 1417 conditions per place. [2022-11-23 02:43:15,263 INFO L137 encePairwiseOnDemand]: 231/239 looper letters, 305 selfloop transitions, 580 changer transitions 44/929 dead transitions. [2022-11-23 02:43:15,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 929 transitions, 8043 flow [2022-11-23 02:43:15,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-23 02:43:15,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-23 02:43:15,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 4081 transitions. [2022-11-23 02:43:15,278 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.36330454909641235 [2022-11-23 02:43:15,278 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 4081 transitions. [2022-11-23 02:43:15,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 4081 transitions. [2022-11-23 02:43:15,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:43:15,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 4081 transitions. [2022-11-23 02:43:15,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 86.82978723404256) internal successors, (4081), 47 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:15,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 239.0) internal successors, (11472), 48 states have internal predecessors, (11472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:15,315 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 239.0) internal successors, (11472), 48 states have internal predecessors, (11472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:15,316 INFO L175 Difference]: Start difference. First operand has 62 places, 89 transitions, 627 flow. Second operand 47 states and 4081 transitions. [2022-11-23 02:43:15,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 929 transitions, 8043 flow [2022-11-23 02:43:15,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 929 transitions, 7449 flow, removed 267 selfloop flow, removed 2 redundant places. [2022-11-23 02:43:15,439 INFO L231 Difference]: Finished difference. Result has 109 places, 663 transitions, 6107 flow [2022-11-23 02:43:15,440 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=6107, PETRI_PLACES=109, PETRI_TRANSITIONS=663} [2022-11-23 02:43:15,443 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 83 predicate places. [2022-11-23 02:43:15,443 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 663 transitions, 6107 flow [2022-11-23 02:43:15,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 79.9) internal successors, (1598), 20 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:15,444 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:43:15,444 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:43:15,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 02:43:15,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:43:15,651 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)] === [2022-11-23 02:43:15,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:43:15,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1794453763, now seen corresponding path program 4 times [2022-11-23 02:43:15,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:43:15,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242055024] [2022-11-23 02:43:15,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:43:15,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:43:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:17,147 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:43:17,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:43:17,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242055024] [2022-11-23 02:43:17,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242055024] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:43:17,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041829827] [2022-11-23 02:43:17,148 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 02:43:17,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:43:17,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:43:17,150 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:43:17,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 02:43:17,260 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 02:43:17,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:43:17,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 02:43:17,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:43:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:43:17,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:43:19,356 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:43:19,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041829827] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:43:19,356 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:43:19,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 23 [2022-11-23 02:43:19,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9740391] [2022-11-23 02:43:19,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:43:19,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-23 02:43:19,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:43:19,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-23 02:43:19,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2022-11-23 02:43:19,761 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 239 [2022-11-23 02:43:19,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 663 transitions, 6107 flow. Second operand has 25 states, 25 states have (on average 76.48) internal successors, (1912), 25 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:19,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:43:19,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 239 [2022-11-23 02:43:19,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:43:34,344 INFO L130 PetriNetUnfolder]: 11072/15455 cut-off events. [2022-11-23 02:43:34,344 INFO L131 PetriNetUnfolder]: For 74012/74012 co-relation queries the response was YES. [2022-11-23 02:43:34,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77212 conditions, 15455 events. 11072/15455 cut-off events. For 74012/74012 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 83222 event pairs, 18 based on Foata normal form. 64/13915 useless extension candidates. Maximal degree in co-relation 76480. Up to 5057 conditions per place. [2022-11-23 02:43:34,515 INFO L137 encePairwiseOnDemand]: 231/239 looper letters, 709 selfloop transitions, 2166 changer transitions 142/3017 dead transitions. [2022-11-23 02:43:34,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 3017 transitions, 31080 flow [2022-11-23 02:43:34,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-11-23 02:43:34,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2022-11-23 02:43:34,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 8958 transitions. [2022-11-23 02:43:34,671 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3470478847047885 [2022-11-23 02:43:34,672 INFO L72 ComplementDD]: Start complementDD. Operand 108 states and 8958 transitions. [2022-11-23 02:43:34,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 8958 transitions. [2022-11-23 02:43:34,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:43:34,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 108 states and 8958 transitions. [2022-11-23 02:43:34,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 109 states, 108 states have (on average 82.94444444444444) internal successors, (8958), 108 states have internal predecessors, (8958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:34,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 109 states, 109 states have (on average 239.0) internal successors, (26051), 109 states have internal predecessors, (26051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:34,779 INFO L81 ComplementDD]: Finished complementDD. Result has 109 states, 109 states have (on average 239.0) internal successors, (26051), 109 states have internal predecessors, (26051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:34,788 INFO L175 Difference]: Start difference. First operand has 109 places, 663 transitions, 6107 flow. Second operand 108 states and 8958 transitions. [2022-11-23 02:43:34,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 3017 transitions, 31080 flow [2022-11-23 02:43:35,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 3017 transitions, 27257 flow, removed 1904 selfloop flow, removed 1 redundant places. [2022-11-23 02:43:35,908 INFO L231 Difference]: Finished difference. Result has 241 places, 2372 transitions, 25443 flow [2022-11-23 02:43:35,908 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=4980, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=597, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=108, PETRI_FLOW=25443, PETRI_PLACES=241, PETRI_TRANSITIONS=2372} [2022-11-23 02:43:35,909 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 215 predicate places. [2022-11-23 02:43:35,909 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 2372 transitions, 25443 flow [2022-11-23 02:43:35,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 76.48) internal successors, (1912), 25 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:35,910 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:43:35,911 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:43:35,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 02:43:36,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 02:43:36,115 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)] === [2022-11-23 02:43:36,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:43:36,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1020477233, now seen corresponding path program 5 times [2022-11-23 02:43:36,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:43:36,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339815886] [2022-11-23 02:43:36,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:43:36,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:43:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:43:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:43:37,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:43:37,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339815886] [2022-11-23 02:43:37,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339815886] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:43:37,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706482308] [2022-11-23 02:43:37,399 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 02:43:37,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:43:37,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:43:37,404 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:43:37,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 02:43:37,526 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-23 02:43:37,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:43:37,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 02:43:37,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:43:38,165 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:43:38,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:43:39,667 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:43:39,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706482308] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:43:39,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:43:39,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2022-11-23 02:43:39,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706223366] [2022-11-23 02:43:39,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:43:39,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-23 02:43:39,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:43:39,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-23 02:43:39,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2022-11-23 02:43:40,164 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 239 [2022-11-23 02:43:40,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 2372 transitions, 25443 flow. Second operand has 25 states, 25 states have (on average 78.36) internal successors, (1959), 25 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:40,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:43:40,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 239 [2022-11-23 02:43:40,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:43:58,744 INFO L130 PetriNetUnfolder]: 23182/32076 cut-off events. [2022-11-23 02:43:58,744 INFO L131 PetriNetUnfolder]: For 136529/136529 co-relation queries the response was YES. [2022-11-23 02:43:59,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179852 conditions, 32076 events. 23182/32076 cut-off events. For 136529/136529 co-relation queries the response was YES. Maximal size of possible extension queue 1582. Compared 188026 event pairs, 140 based on Foata normal form. 94/30948 useless extension candidates. Maximal degree in co-relation 179058. Up to 10085 conditions per place. [2022-11-23 02:43:59,255 INFO L137 encePairwiseOnDemand]: 231/239 looper letters, 1437 selfloop transitions, 4983 changer transitions 110/6530 dead transitions. [2022-11-23 02:43:59,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 6530 transitions, 82416 flow [2022-11-23 02:43:59,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-11-23 02:43:59,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2022-11-23 02:43:59,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 5564 transitions. [2022-11-23 02:43:59,286 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3527323443641435 [2022-11-23 02:43:59,286 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 5564 transitions. [2022-11-23 02:43:59,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 5564 transitions. [2022-11-23 02:43:59,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:43:59,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 5564 transitions. [2022-11-23 02:43:59,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 84.3030303030303) internal successors, (5564), 66 states have internal predecessors, (5564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:59,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 239.0) internal successors, (16013), 67 states have internal predecessors, (16013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:59,346 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 239.0) internal successors, (16013), 67 states have internal predecessors, (16013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:43:59,346 INFO L175 Difference]: Start difference. First operand has 241 places, 2372 transitions, 25443 flow. Second operand 66 states and 5564 transitions. [2022-11-23 02:43:59,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 6530 transitions, 82416 flow [2022-11-23 02:44:12,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 6530 transitions, 77072 flow, removed 2601 selfloop flow, removed 15 redundant places. [2022-11-23 02:44:12,588 INFO L231 Difference]: Finished difference. Result has 323 places, 6102 transitions, 79677 flow [2022-11-23 02:44:12,590 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=23287, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1673, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=79677, PETRI_PLACES=323, PETRI_TRANSITIONS=6102} [2022-11-23 02:44:12,591 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 297 predicate places. [2022-11-23 02:44:12,591 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 6102 transitions, 79677 flow [2022-11-23 02:44:12,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 78.36) internal successors, (1959), 25 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:44:12,592 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:44:12,592 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:44:12,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 02:44:12,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:44:12,799 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)] === [2022-11-23 02:44:12,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:44:12,800 INFO L85 PathProgramCache]: Analyzing trace with hash 508922273, now seen corresponding path program 6 times [2022-11-23 02:44:12,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:44:12,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043787677] [2022-11-23 02:44:12,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:44:12,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:44:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:44:14,584 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:44:14,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:44:14,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043787677] [2022-11-23 02:44:14,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043787677] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:44:14,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097702021] [2022-11-23 02:44:14,585 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-23 02:44:14,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:44:14,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:44:14,586 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:44:14,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083248c3-6857-4b60-bc4c-93c9a446b74f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 02:44:14,698 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-23 02:44:14,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:44:14,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 02:44:14,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:44:15,352 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:44:15,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:44:16,947 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:44:16,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097702021] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:44:16,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:44:16,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 23 [2022-11-23 02:44:16,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465206757] [2022-11-23 02:44:16,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:44:16,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-23 02:44:16,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:44:16,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-23 02:44:16,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2022-11-23 02:44:17,403 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 239 [2022-11-23 02:44:17,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 6102 transitions, 79677 flow. Second operand has 25 states, 25 states have (on average 79.48) internal successors, (1987), 25 states have internal predecessors, (1987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:44:17,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:44:17,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 239 [2022-11-23 02:44:17,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand