./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 527bcce2 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_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:01:08,374 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:01:08,489 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-21 21:01:08,494 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:01:08,500 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:01:08,539 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:01:08,540 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:01:08,540 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:01:08,543 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:01:08,547 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:01:08,549 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:01:08,550 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:01:08,550 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:01:08,552 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:01:08,553 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 21:01:08,553 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 21:01:08,554 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:01:08,554 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 21:01:08,555 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:01:08,555 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 21:01:08,556 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:01:08,556 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 21:01:08,557 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-21 21:01:08,557 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 21:01:08,558 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 21:01:08,558 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 21:01:08,559 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:01:08,559 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:01:08,560 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:01:08,560 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:01:08,562 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:01:08,562 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:01:08,562 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:01:08,563 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 21:01:08,563 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:01:08,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 21:01:08,564 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:01:08,564 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:01:08,564 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 21:01:08,564 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:01:08,565 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:01:08,565 INFO L153 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_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba [2023-11-21 21:01:08,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:01:08,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:01:08,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:01:08,942 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:01:08,943 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:01:08,945 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2023-11-21 21:01:12,084 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:01:12,363 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:01:12,363 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2023-11-21 21:01:12,384 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/data/f39e02893/9bcf1484b8a947eba541cf04d48b55de/FLAGb8309f60e [2023-11-21 21:01:12,399 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/data/f39e02893/9bcf1484b8a947eba541cf04d48b55de [2023-11-21 21:01:12,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:01:12,403 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:01:12,405 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:01:12,405 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:01:12,411 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:01:12,412 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:01:12" (1/1) ... [2023-11-21 21:01:12,413 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76d02a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:12, skipping insertion in model container [2023-11-21 21:01:12,413 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:01:12" (1/1) ... [2023-11-21 21:01:12,475 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:01:13,102 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:01:13,130 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:01:13,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:01:13,313 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:01:13,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:13 WrapperNode [2023-11-21 21:01:13,314 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:01:13,316 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:01:13,316 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:01:13,316 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:01:13,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:13" (1/1) ... [2023-11-21 21:01:13,358 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:13" (1/1) ... [2023-11-21 21:01:13,455 INFO L138 Inliner]: procedures = 272, calls = 36, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 290 [2023-11-21 21:01:13,455 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:01:13,456 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:01:13,456 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:01:13,457 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:01:13,470 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:13" (1/1) ... [2023-11-21 21:01:13,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:13" (1/1) ... [2023-11-21 21:01:13,486 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:13" (1/1) ... [2023-11-21 21:01:13,494 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:13" (1/1) ... [2023-11-21 21:01:13,527 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:13" (1/1) ... [2023-11-21 21:01:13,545 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:13" (1/1) ... [2023-11-21 21:01:13,548 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:13" (1/1) ... [2023-11-21 21:01:13,565 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:13" (1/1) ... [2023-11-21 21:01:13,569 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:01:13,570 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:01:13,571 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:01:13,571 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:01:13,572 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:13" (1/1) ... [2023-11-21 21:01:13,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:01:13,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:01:13,623 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:01:13,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:01:13,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 21:01:13,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 21:01:13,671 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-21 21:01:13,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 21:01:13,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 21:01:13,672 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-21 21:01:13,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:01:13,673 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-21 21:01:13,673 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-21 21:01:13,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 21:01:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:01:13,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:01:13,676 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 21:01:13,849 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:01:13,851 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:01:14,400 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:01:14,460 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:01:14,460 INFO L308 CfgBuilder]: Removed 25 assume(true) statements. [2023-11-21 21:01:14,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:01:14 BoogieIcfgContainer [2023-11-21 21:01:14,463 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:01:14,466 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:01:14,466 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:01:14,470 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:01:14,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:01:12" (1/3) ... [2023-11-21 21:01:14,472 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48cbb139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:01:14, skipping insertion in model container [2023-11-21 21:01:14,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:13" (2/3) ... [2023-11-21 21:01:14,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48cbb139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:01:14, skipping insertion in model container [2023-11-21 21:01:14,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:01:14" (3/3) ... [2023-11-21 21:01:14,474 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_70-funloop_racefree.i [2023-11-21 21:01:14,486 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 21:01:14,500 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:01:14,500 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-21 21:01:14,501 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 21:01:14,654 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-21 21:01:14,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 291 transitions, 589 flow [2023-11-21 21:01:14,943 INFO L124 PetriNetUnfolderBase]: 52/426 cut-off events. [2023-11-21 21:01:14,944 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 21:01:14,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 426 events. 52/426 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1899 event pairs, 0 based on Foata normal form. 0/354 useless extension candidates. Maximal degree in co-relation 254. Up to 8 conditions per place. [2023-11-21 21:01:14,962 INFO L82 GeneralOperation]: Start removeDead. Operand has 259 places, 291 transitions, 589 flow [2023-11-21 21:01:14,971 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 291 transitions, 589 flow [2023-11-21 21:01:14,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:01:14,990 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=LoopHeads, 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;@2d2fb4ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:01:14,991 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-21 21:01:15,006 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 21:01:15,006 INFO L124 PetriNetUnfolderBase]: 7/89 cut-off events. [2023-11-21 21:01:15,006 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 21:01:15,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:15,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:15,008 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-21 21:01:15,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:15,014 INFO L85 PathProgramCache]: Analyzing trace with hash 972554558, now seen corresponding path program 1 times [2023-11-21 21:01:15,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:15,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474037707] [2023-11-21 21:01:15,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:15,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:15,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:01:15,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:15,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474037707] [2023-11-21 21:01:15,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474037707] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:15,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:15,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:01:15,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727471540] [2023-11-21 21:01:15,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:15,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:01:15,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:15,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:01:15,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:01:15,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 291 [2023-11-21 21:01:15,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 291 transitions, 589 flow. Second operand has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:15,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:01:15,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 291 [2023-11-21 21:01:15,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:01:15,958 INFO L124 PetriNetUnfolderBase]: 98/1313 cut-off events. [2023-11-21 21:01:15,958 INFO L125 PetriNetUnfolderBase]: For 7/10 co-relation queries the response was YES. [2023-11-21 21:01:15,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 1313 events. 98/1313 cut-off events. For 7/10 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9118 event pairs, 72 based on Foata normal form. 227/1426 useless extension candidates. Maximal degree in co-relation 1326. Up to 187 conditions per place. [2023-11-21 21:01:15,970 INFO L140 encePairwiseOnDemand]: 259/291 looper letters, 23 selfloop transitions, 2 changer transitions 0/257 dead transitions. [2023-11-21 21:01:15,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 257 transitions, 571 flow [2023-11-21 21:01:15,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:01:15,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:01:15,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 764 transitions. [2023-11-21 21:01:15,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8751431844215349 [2023-11-21 21:01:15,998 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 764 transitions. [2023-11-21 21:01:15,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 764 transitions. [2023-11-21 21:01:16,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:01:16,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 764 transitions. [2023-11-21 21:01:16,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:16,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:16,026 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:16,028 INFO L175 Difference]: Start difference. First operand has 259 places, 291 transitions, 589 flow. Second operand 3 states and 764 transitions. [2023-11-21 21:01:16,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 257 transitions, 571 flow [2023-11-21 21:01:16,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 257 transitions, 571 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 21:01:16,048 INFO L231 Difference]: Finished difference. Result has 256 places, 257 transitions, 531 flow [2023-11-21 21:01:16,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=531, PETRI_PLACES=256, PETRI_TRANSITIONS=257} [2023-11-21 21:01:16,056 INFO L281 CegarLoopForPetriNet]: 259 programPoint places, -3 predicate places. [2023-11-21 21:01:16,056 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 257 transitions, 531 flow [2023-11-21 21:01:16,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:16,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:16,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:16,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 21:01:16,059 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-21 21:01:16,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:16,062 INFO L85 PathProgramCache]: Analyzing trace with hash -2115554242, now seen corresponding path program 1 times [2023-11-21 21:01:16,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:16,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854862927] [2023-11-21 21:01:16,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:16,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:16,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:01:16,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:16,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854862927] [2023-11-21 21:01:16,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854862927] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:01:16,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789207599] [2023-11-21 21:01:16,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:16,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:01:16,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:01:16,301 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:01:16,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 21:01:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:16,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 21:01:16,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:01:16,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 21:01:16,453 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:01:16,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789207599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:16,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:01:16,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-21 21:01:16,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300967191] [2023-11-21 21:01:16,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:16,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:01:16,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:16,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:01:16,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:01:16,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 291 [2023-11-21 21:01:16,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 257 transitions, 531 flow. Second operand has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:16,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:01:16,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 291 [2023-11-21 21:01:16,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:01:16,822 INFO L124 PetriNetUnfolderBase]: 117/1336 cut-off events. [2023-11-21 21:01:16,822 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-21 21:01:16,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 1336 events. 117/1336 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9542 event pairs, 0 based on Foata normal form. 1/1223 useless extension candidates. Maximal degree in co-relation 1534. Up to 208 conditions per place. [2023-11-21 21:01:16,837 INFO L140 encePairwiseOnDemand]: 288/291 looper letters, 30 selfloop transitions, 2 changer transitions 0/265 dead transitions. [2023-11-21 21:01:16,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 265 transitions, 611 flow [2023-11-21 21:01:16,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:01:16,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:01:16,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 741 transitions. [2023-11-21 21:01:16,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8487972508591065 [2023-11-21 21:01:16,842 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 741 transitions. [2023-11-21 21:01:16,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 741 transitions. [2023-11-21 21:01:16,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:01:16,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 741 transitions. [2023-11-21 21:01:16,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 247.0) internal successors, (741), 3 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:16,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:16,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:16,855 INFO L175 Difference]: Start difference. First operand has 256 places, 257 transitions, 531 flow. Second operand 3 states and 741 transitions. [2023-11-21 21:01:16,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 265 transitions, 611 flow [2023-11-21 21:01:16,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 265 transitions, 609 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 21:01:16,868 INFO L231 Difference]: Finished difference. Result has 258 places, 257 transitions, 537 flow [2023-11-21 21:01:16,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=537, PETRI_PLACES=258, PETRI_TRANSITIONS=257} [2023-11-21 21:01:16,869 INFO L281 CegarLoopForPetriNet]: 259 programPoint places, -1 predicate places. [2023-11-21 21:01:16,870 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 257 transitions, 537 flow [2023-11-21 21:01:16,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:16,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:16,877 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:16,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 21:01:17,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:01:17,092 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-21 21:01:17,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:17,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1926919945, now seen corresponding path program 1 times [2023-11-21 21:01:17,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:17,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236399529] [2023-11-21 21:01:17,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:17,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:17,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 21:01:17,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:17,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236399529] [2023-11-21 21:01:17,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236399529] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:01:17,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918093922] [2023-11-21 21:01:17,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:17,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:01:17,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:01:17,273 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:01:17,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 21:01:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:17,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:01:17,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:01:17,451 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 21:01:17,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:01:17,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 21:01:17,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918093922] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:01:17,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 21:01:17,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-21 21:01:17,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903055528] [2023-11-21 21:01:17,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 21:01:17,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 21:01:17,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:17,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 21:01:17,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-21 21:01:17,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 291 [2023-11-21 21:01:17,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 257 transitions, 537 flow. Second operand has 10 states, 10 states have (on average 234.9) internal successors, (2349), 10 states have internal predecessors, (2349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:17,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:01:17,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 291 [2023-11-21 21:01:17,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:01:17,953 INFO L124 PetriNetUnfolderBase]: 95/1223 cut-off events. [2023-11-21 21:01:17,953 INFO L125 PetriNetUnfolderBase]: For 5/8 co-relation queries the response was YES. [2023-11-21 21:01:17,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1431 conditions, 1223 events. 95/1223 cut-off events. For 5/8 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8292 event pairs, 72 based on Foata normal form. 2/1121 useless extension candidates. Maximal degree in co-relation 1368. Up to 179 conditions per place. [2023-11-21 21:01:17,964 INFO L140 encePairwiseOnDemand]: 285/291 looper letters, 27 selfloop transitions, 9 changer transitions 0/265 dead transitions. [2023-11-21 21:01:17,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 265 transitions, 627 flow [2023-11-21 21:01:17,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 21:01:17,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-21 21:01:17,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2135 transitions. [2023-11-21 21:01:17,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.815196639938908 [2023-11-21 21:01:17,973 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2135 transitions. [2023-11-21 21:01:17,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2135 transitions. [2023-11-21 21:01:17,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:01:17,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2135 transitions. [2023-11-21 21:01:17,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 237.22222222222223) internal successors, (2135), 9 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:17,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 291.0) internal successors, (2910), 10 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:17,992 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 291.0) internal successors, (2910), 10 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:17,992 INFO L175 Difference]: Start difference. First operand has 258 places, 257 transitions, 537 flow. Second operand 9 states and 2135 transitions. [2023-11-21 21:01:17,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 265 transitions, 627 flow [2023-11-21 21:01:17,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 265 transitions, 623 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 21:01:18,001 INFO L231 Difference]: Finished difference. Result has 267 places, 263 transitions, 583 flow [2023-11-21 21:01:18,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=583, PETRI_PLACES=267, PETRI_TRANSITIONS=263} [2023-11-21 21:01:18,004 INFO L281 CegarLoopForPetriNet]: 259 programPoint places, 8 predicate places. [2023-11-21 21:01:18,004 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 263 transitions, 583 flow [2023-11-21 21:01:18,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 234.9) internal successors, (2349), 10 states have internal predecessors, (2349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:18,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:18,008 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:18,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 21:01:18,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:01:18,223 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-21 21:01:18,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:18,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1681037065, now seen corresponding path program 2 times [2023-11-21 21:01:18,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:18,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887831347] [2023-11-21 21:01:18,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:18,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:18,459 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 21:01:18,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:18,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887831347] [2023-11-21 21:01:18,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887831347] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:01:18,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323929000] [2023-11-21 21:01:18,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 21:01:18,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:01:18,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:01:18,461 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:01:18,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 21:01:18,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 21:01:18,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 21:01:18,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 21:01:18,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:01:18,623 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 21:01:18,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:01:18,748 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 21:01:18,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323929000] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:01:18,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 21:01:18,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-21 21:01:18,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008184073] [2023-11-21 21:01:18,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 21:01:18,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-21 21:01:18,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:18,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-21 21:01:18,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-21 21:01:18,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 291 [2023-11-21 21:01:18,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 263 transitions, 583 flow. Second operand has 18 states, 18 states have (on average 234.94444444444446) internal successors, (4229), 18 states have internal predecessors, (4229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:18,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:01:18,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 291 [2023-11-21 21:01:18,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:01:19,301 INFO L124 PetriNetUnfolderBase]: 95/1243 cut-off events. [2023-11-21 21:01:19,302 INFO L125 PetriNetUnfolderBase]: For 32/35 co-relation queries the response was YES. [2023-11-21 21:01:19,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 1243 events. 95/1243 cut-off events. For 32/35 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8305 event pairs, 72 based on Foata normal form. 4/1143 useless extension candidates. Maximal degree in co-relation 1371. Up to 179 conditions per place. [2023-11-21 21:01:19,314 INFO L140 encePairwiseOnDemand]: 285/291 looper letters, 31 selfloop transitions, 21 changer transitions 0/281 dead transitions. [2023-11-21 21:01:19,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 281 transitions, 783 flow [2023-11-21 21:01:19,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-21 21:01:19,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-21 21:01:19,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4949 transitions. [2023-11-21 21:01:19,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8098510882016037 [2023-11-21 21:01:19,331 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4949 transitions. [2023-11-21 21:01:19,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4949 transitions. [2023-11-21 21:01:19,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:01:19,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4949 transitions. [2023-11-21 21:01:19,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 235.66666666666666) internal successors, (4949), 21 states have internal predecessors, (4949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:19,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 291.0) internal successors, (6402), 22 states have internal predecessors, (6402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:19,375 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 291.0) internal successors, (6402), 22 states have internal predecessors, (6402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:19,375 INFO L175 Difference]: Start difference. First operand has 267 places, 263 transitions, 583 flow. Second operand 21 states and 4949 transitions. [2023-11-21 21:01:19,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 281 transitions, 783 flow [2023-11-21 21:01:19,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 281 transitions, 769 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-21 21:01:19,388 INFO L231 Difference]: Finished difference. Result has 291 places, 276 transitions, 707 flow [2023-11-21 21:01:19,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=707, PETRI_PLACES=291, PETRI_TRANSITIONS=276} [2023-11-21 21:01:19,391 INFO L281 CegarLoopForPetriNet]: 259 programPoint places, 32 predicate places. [2023-11-21 21:01:19,391 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 276 transitions, 707 flow [2023-11-21 21:01:19,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 234.94444444444446) internal successors, (4229), 18 states have internal predecessors, (4229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:19,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:19,394 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:19,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 21:01:19,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:01:19,614 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-21 21:01:19,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:19,615 INFO L85 PathProgramCache]: Analyzing trace with hash -300603145, now seen corresponding path program 3 times [2023-11-21 21:01:19,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:19,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825365144] [2023-11-21 21:01:19,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:19,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 21:01:20,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:20,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825365144] [2023-11-21 21:01:20,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825365144] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:01:20,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668609909] [2023-11-21 21:01:20,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 21:01:20,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:01:20,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:01:20,062 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:01:20,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 21:01:20,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-21 21:01:20,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 21:01:20,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-21 21:01:20,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:01:20,284 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 21:01:20,284 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:01:20,509 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 21:01:20,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668609909] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:01:20,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 21:01:20,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-21 21:01:20,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681608838] [2023-11-21 21:01:20,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 21:01:20,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-21 21:01:20,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:20,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-21 21:01:20,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-21 21:01:20,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 291 [2023-11-21 21:01:20,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 276 transitions, 707 flow. Second operand has 23 states, 23 states have (on average 235.04347826086956) internal successors, (5406), 23 states have internal predecessors, (5406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:20,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:01:20,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 291 [2023-11-21 21:01:20,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:01:21,205 INFO L124 PetriNetUnfolderBase]: 95/1258 cut-off events. [2023-11-21 21:01:21,205 INFO L125 PetriNetUnfolderBase]: For 133/136 co-relation queries the response was YES. [2023-11-21 21:01:21,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1613 conditions, 1258 events. 95/1258 cut-off events. For 133/136 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8317 event pairs, 72 based on Foata normal form. 3/1157 useless extension candidates. Maximal degree in co-relation 1375. Up to 179 conditions per place. [2023-11-21 21:01:21,217 INFO L140 encePairwiseOnDemand]: 285/291 looper letters, 34 selfloop transitions, 30 changer transitions 0/293 dead transitions. [2023-11-21 21:01:21,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 293 transitions, 963 flow [2023-11-21 21:01:21,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-21 21:01:21,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-21 21:01:21,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7057 transitions. [2023-11-21 21:01:21,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8083619702176403 [2023-11-21 21:01:21,238 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7057 transitions. [2023-11-21 21:01:21,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7057 transitions. [2023-11-21 21:01:21,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:01:21,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7057 transitions. [2023-11-21 21:01:21,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 235.23333333333332) internal successors, (7057), 30 states have internal predecessors, (7057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:21,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 291.0) internal successors, (9021), 31 states have internal predecessors, (9021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:21,289 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 291.0) internal successors, (9021), 31 states have internal predecessors, (9021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:21,289 INFO L175 Difference]: Start difference. First operand has 291 places, 276 transitions, 707 flow. Second operand 30 states and 7057 transitions. [2023-11-21 21:01:21,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 293 transitions, 963 flow [2023-11-21 21:01:21,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 293 transitions, 933 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-21 21:01:21,300 INFO L231 Difference]: Finished difference. Result has 318 places, 286 transitions, 835 flow [2023-11-21 21:01:21,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=835, PETRI_PLACES=318, PETRI_TRANSITIONS=286} [2023-11-21 21:01:21,302 INFO L281 CegarLoopForPetriNet]: 259 programPoint places, 59 predicate places. [2023-11-21 21:01:21,302 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 286 transitions, 835 flow [2023-11-21 21:01:21,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 235.04347826086956) internal successors, (5406), 23 states have internal predecessors, (5406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:21,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:21,305 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:21,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 21:01:21,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:01:21,528 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-21 21:01:21,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:21,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1163017207, now seen corresponding path program 4 times [2023-11-21 21:01:21,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:21,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526534952] [2023-11-21 21:01:21,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:21,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:01:21,566 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:01:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:01:21,618 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:01:21,619 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 21:01:21,620 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-21 21:01:21,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-11-21 21:01:21,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-11-21 21:01:21,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-11-21 21:01:21,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-11-21 21:01:21,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-11-21 21:01:21,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-11-21 21:01:21,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-11-21 21:01:21,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-11-21 21:01:21,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-11-21 21:01:21,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-11-21 21:01:21,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-11-21 21:01:21,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-11-21 21:01:21,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-11-21 21:01:21,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-11-21 21:01:21,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-11-21 21:01:21,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-11-21 21:01:21,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 21:01:21,626 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-11-21 21:01:21,628 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 21:01:21,629 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-21 21:01:21,713 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-21 21:01:21,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 361 places, 407 transitions, 830 flow [2023-11-21 21:01:21,875 INFO L124 PetriNetUnfolderBase]: 87/709 cut-off events. [2023-11-21 21:01:21,875 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-21 21:01:21,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 721 conditions, 709 events. 87/709 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3946 event pairs, 0 based on Foata normal form. 0/589 useless extension candidates. Maximal degree in co-relation 428. Up to 12 conditions per place. [2023-11-21 21:01:21,889 INFO L82 GeneralOperation]: Start removeDead. Operand has 361 places, 407 transitions, 830 flow [2023-11-21 21:01:21,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 361 places, 407 transitions, 830 flow [2023-11-21 21:01:21,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:01:21,903 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=LoopHeads, 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;@2d2fb4ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:01:21,904 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-21 21:01:21,912 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 21:01:21,912 INFO L124 PetriNetUnfolderBase]: 7/89 cut-off events. [2023-11-21 21:01:21,912 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 21:01:21,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:21,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:21,913 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-21 21:01:21,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:21,913 INFO L85 PathProgramCache]: Analyzing trace with hash -996074242, now seen corresponding path program 1 times [2023-11-21 21:01:21,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:21,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576785287] [2023-11-21 21:01:21,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:21,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:21,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:01:21,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:21,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576785287] [2023-11-21 21:01:21,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576785287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:21,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:21,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:01:21,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120112658] [2023-11-21 21:01:21,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:21,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:01:21,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:21,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:01:21,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:01:21,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 407 [2023-11-21 21:01:21,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 407 transitions, 830 flow. Second operand has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:21,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:01:21,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 407 [2023-11-21 21:01:21,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:01:24,887 INFO L124 PetriNetUnfolderBase]: 1782/12827 cut-off events. [2023-11-21 21:01:24,887 INFO L125 PetriNetUnfolderBase]: For 131/143 co-relation queries the response was YES. [2023-11-21 21:01:24,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15491 conditions, 12827 events. 1782/12827 cut-off events. For 131/143 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 157930 event pairs, 1464 based on Foata normal form. 3186/14940 useless extension candidates. Maximal degree in co-relation 13807. Up to 2601 conditions per place. [2023-11-21 21:01:25,042 INFO L140 encePairwiseOnDemand]: 362/407 looper letters, 33 selfloop transitions, 2 changer transitions 0/357 dead transitions. [2023-11-21 21:01:25,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 357 transitions, 800 flow [2023-11-21 21:01:25,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:01:25,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:01:25,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1063 transitions. [2023-11-21 21:01:25,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8705978705978706 [2023-11-21 21:01:25,048 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1063 transitions. [2023-11-21 21:01:25,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1063 transitions. [2023-11-21 21:01:25,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:01:25,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1063 transitions. [2023-11-21 21:01:25,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 354.3333333333333) internal successors, (1063), 3 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:25,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:25,057 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:25,057 INFO L175 Difference]: Start difference. First operand has 361 places, 407 transitions, 830 flow. Second operand 3 states and 1063 transitions. [2023-11-21 21:01:25,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 357 transitions, 800 flow [2023-11-21 21:01:25,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 357 transitions, 800 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 21:01:25,067 INFO L231 Difference]: Finished difference. Result has 355 places, 357 transitions, 740 flow [2023-11-21 21:01:25,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=740, PETRI_PLACES=355, PETRI_TRANSITIONS=357} [2023-11-21 21:01:25,071 INFO L281 CegarLoopForPetriNet]: 361 programPoint places, -6 predicate places. [2023-11-21 21:01:25,072 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 357 transitions, 740 flow [2023-11-21 21:01:25,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:25,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:25,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:25,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 21:01:25,073 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-21 21:01:25,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:25,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1434452907, now seen corresponding path program 1 times [2023-11-21 21:01:25,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:25,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999116408] [2023-11-21 21:01:25,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:25,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:25,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:01:25,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:25,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999116408] [2023-11-21 21:01:25,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999116408] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:01:25,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009349998] [2023-11-21 21:01:25,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:25,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:01:25,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:01:25,159 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:01:25,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 21:01:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:25,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 21:01:25,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:01:25,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 21:01:25,273 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:01:25,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009349998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:25,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:01:25,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-21 21:01:25,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519761148] [2023-11-21 21:01:25,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:25,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:01:25,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:25,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:01:25,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:01:25,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 407 [2023-11-21 21:01:25,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 357 transitions, 740 flow. Second operand has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:25,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:01:25,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 407 [2023-11-21 21:01:25,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:01:28,054 INFO L124 PetriNetUnfolderBase]: 2254/14485 cut-off events. [2023-11-21 21:01:28,054 INFO L125 PetriNetUnfolderBase]: For 193/194 co-relation queries the response was YES. [2023-11-21 21:01:28,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17817 conditions, 14485 events. 2254/14485 cut-off events. For 193/194 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 180983 event pairs, 1912 based on Foata normal form. 1/13210 useless extension candidates. Maximal degree in co-relation 17784. Up to 3253 conditions per place. [2023-11-21 21:01:28,340 INFO L140 encePairwiseOnDemand]: 404/407 looper letters, 41 selfloop transitions, 2 changer transitions 0/366 dead transitions. [2023-11-21 21:01:28,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 366 transitions, 844 flow [2023-11-21 21:01:28,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:01:28,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:01:28,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1028 transitions. [2023-11-21 21:01:28,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8419328419328419 [2023-11-21 21:01:28,345 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1028 transitions. [2023-11-21 21:01:28,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1028 transitions. [2023-11-21 21:01:28,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:01:28,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1028 transitions. [2023-11-21 21:01:28,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 342.6666666666667) internal successors, (1028), 3 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:28,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:28,354 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:28,354 INFO L175 Difference]: Start difference. First operand has 355 places, 357 transitions, 740 flow. Second operand 3 states and 1028 transitions. [2023-11-21 21:01:28,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 366 transitions, 844 flow [2023-11-21 21:01:28,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 366 transitions, 842 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 21:01:28,368 INFO L231 Difference]: Finished difference. Result has 357 places, 358 transitions, 750 flow [2023-11-21 21:01:28,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=750, PETRI_PLACES=357, PETRI_TRANSITIONS=358} [2023-11-21 21:01:28,371 INFO L281 CegarLoopForPetriNet]: 361 programPoint places, -4 predicate places. [2023-11-21 21:01:28,371 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 358 transitions, 750 flow [2023-11-21 21:01:28,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:28,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:28,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:28,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 21:01:28,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-21 21:01:28,588 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-21 21:01:28,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:28,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1465531639, now seen corresponding path program 1 times [2023-11-21 21:01:28,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:28,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238125272] [2023-11-21 21:01:28,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:28,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:28,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 21:01:28,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:28,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238125272] [2023-11-21 21:01:28,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238125272] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:01:28,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090653239] [2023-11-21 21:01:28,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:28,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:01:28,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:01:28,665 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:01:28,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 21:01:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:28,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 21:01:28,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:01:28,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 21:01:28,797 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:01:28,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090653239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:28,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:01:28,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-21 21:01:28,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257666585] [2023-11-21 21:01:28,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:28,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:01:28,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:28,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:01:28,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:01:28,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 407 [2023-11-21 21:01:28,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 358 transitions, 750 flow. Second operand has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 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) [2023-11-21 21:01:28,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:01:28,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 407 [2023-11-21 21:01:28,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:01:32,919 INFO L124 PetriNetUnfolderBase]: 3780/24899 cut-off events. [2023-11-21 21:01:32,919 INFO L125 PetriNetUnfolderBase]: For 154/158 co-relation queries the response was YES. [2023-11-21 21:01:33,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30455 conditions, 24899 events. 3780/24899 cut-off events. For 154/158 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 334250 event pairs, 1768 based on Foata normal form. 90/23084 useless extension candidates. Maximal degree in co-relation 30414. Up to 3212 conditions per place. [2023-11-21 21:01:33,113 INFO L140 encePairwiseOnDemand]: 404/407 looper letters, 57 selfloop transitions, 2 changer transitions 0/383 dead transitions. [2023-11-21 21:01:33,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 383 transitions, 918 flow [2023-11-21 21:01:33,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:01:33,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:01:33,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1044 transitions. [2023-11-21 21:01:33,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.855036855036855 [2023-11-21 21:01:33,118 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1044 transitions. [2023-11-21 21:01:33,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1044 transitions. [2023-11-21 21:01:33,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:01:33,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1044 transitions. [2023-11-21 21:01:33,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 348.0) internal successors, (1044), 3 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:33,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:33,125 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:33,126 INFO L175 Difference]: Start difference. First operand has 357 places, 358 transitions, 750 flow. Second operand 3 states and 1044 transitions. [2023-11-21 21:01:33,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 383 transitions, 918 flow [2023-11-21 21:01:33,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 383 transitions, 916 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 21:01:33,138 INFO L231 Difference]: Finished difference. Result has 359 places, 359 transitions, 760 flow [2023-11-21 21:01:33,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=760, PETRI_PLACES=359, PETRI_TRANSITIONS=359} [2023-11-21 21:01:33,142 INFO L281 CegarLoopForPetriNet]: 361 programPoint places, -2 predicate places. [2023-11-21 21:01:33,142 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 359 transitions, 760 flow [2023-11-21 21:01:33,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 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) [2023-11-21 21:01:33,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:33,143 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:33,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 21:01:33,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:01:33,364 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-21 21:01:33,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:33,365 INFO L85 PathProgramCache]: Analyzing trace with hash -980676230, now seen corresponding path program 1 times [2023-11-21 21:01:33,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:33,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246567879] [2023-11-21 21:01:33,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:33,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:33,444 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-21 21:01:33,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:33,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246567879] [2023-11-21 21:01:33,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246567879] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:01:33,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32371230] [2023-11-21 21:01:33,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:33,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:01:33,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:01:33,447 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:01:33,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 21:01:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:33,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:01:33,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:01:33,579 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-21 21:01:33,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:01:33,614 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-21 21:01:33,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32371230] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:01:33,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 21:01:33,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-21 21:01:33,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414193544] [2023-11-21 21:01:33,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 21:01:33,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 21:01:33,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:33,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 21:01:33,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-21 21:01:33,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 407 [2023-11-21 21:01:33,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 359 transitions, 760 flow. Second operand has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:33,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:01:33,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 407 [2023-11-21 21:01:33,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:01:37,778 INFO L124 PetriNetUnfolderBase]: 3247/22657 cut-off events. [2023-11-21 21:01:37,778 INFO L125 PetriNetUnfolderBase]: For 161/171 co-relation queries the response was YES. [2023-11-21 21:01:37,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27456 conditions, 22657 events. 3247/22657 cut-off events. For 161/171 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 302662 event pairs, 2680 based on Foata normal form. 2/20781 useless extension candidates. Maximal degree in co-relation 27391. Up to 4691 conditions per place. [2023-11-21 21:01:37,963 INFO L140 encePairwiseOnDemand]: 401/407 looper letters, 37 selfloop transitions, 9 changer transitions 0/367 dead transitions. [2023-11-21 21:01:37,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 367 transitions, 870 flow [2023-11-21 21:01:37,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 21:01:37,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-21 21:01:37,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2973 transitions. [2023-11-21 21:01:37,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8116298116298116 [2023-11-21 21:01:37,974 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2973 transitions. [2023-11-21 21:01:37,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2973 transitions. [2023-11-21 21:01:37,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:01:37,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2973 transitions. [2023-11-21 21:01:37,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 330.3333333333333) internal successors, (2973), 9 states have internal predecessors, (2973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:37,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 407.0) internal successors, (4070), 10 states have internal predecessors, (4070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:38,000 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 407.0) internal successors, (4070), 10 states have internal predecessors, (4070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:38,000 INFO L175 Difference]: Start difference. First operand has 359 places, 359 transitions, 760 flow. Second operand 9 states and 2973 transitions. [2023-11-21 21:01:38,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 367 transitions, 870 flow [2023-11-21 21:01:38,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 367 transitions, 868 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 21:01:38,011 INFO L231 Difference]: Finished difference. Result has 369 places, 365 transitions, 808 flow [2023-11-21 21:01:38,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=808, PETRI_PLACES=369, PETRI_TRANSITIONS=365} [2023-11-21 21:01:38,013 INFO L281 CegarLoopForPetriNet]: 361 programPoint places, 8 predicate places. [2023-11-21 21:01:38,013 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 365 transitions, 808 flow [2023-11-21 21:01:38,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:38,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:38,015 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:38,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-21 21:01:38,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-21 21:01:38,228 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-21 21:01:38,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:38,229 INFO L85 PathProgramCache]: Analyzing trace with hash -531220518, now seen corresponding path program 2 times [2023-11-21 21:01:38,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:38,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991204813] [2023-11-21 21:01:38,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:38,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:38,374 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-21 21:01:38,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:38,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991204813] [2023-11-21 21:01:38,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991204813] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:01:38,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691051923] [2023-11-21 21:01:38,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 21:01:38,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:01:38,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:01:38,377 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:01:38,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 21:01:38,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 21:01:38,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 21:01:38,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 21:01:38,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:01:38,540 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-21 21:01:38,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:01:38,651 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-21 21:01:38,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691051923] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:01:38,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 21:01:38,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-21 21:01:38,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8914409] [2023-11-21 21:01:38,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 21:01:38,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-21 21:01:38,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:38,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-21 21:01:38,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-21 21:01:38,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 407 [2023-11-21 21:01:38,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 365 transitions, 808 flow. Second operand has 18 states, 18 states have (on average 327.0) internal successors, (5886), 18 states have internal predecessors, (5886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:38,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:01:38,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 407 [2023-11-21 21:01:38,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:01:43,257 INFO L124 PetriNetUnfolderBase]: 3247/22677 cut-off events. [2023-11-21 21:01:43,257 INFO L125 PetriNetUnfolderBase]: For 187/197 co-relation queries the response was YES. [2023-11-21 21:01:43,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27540 conditions, 22677 events. 3247/22677 cut-off events. For 187/197 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 302599 event pairs, 2680 based on Foata normal form. 4/20803 useless extension candidates. Maximal degree in co-relation 27394. Up to 4691 conditions per place. [2023-11-21 21:01:43,416 INFO L140 encePairwiseOnDemand]: 401/407 looper letters, 41 selfloop transitions, 21 changer transitions 0/383 dead transitions. [2023-11-21 21:01:43,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 383 transitions, 1028 flow [2023-11-21 21:01:43,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-21 21:01:43,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-21 21:01:43,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6891 transitions. [2023-11-21 21:01:43,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8062478062478062 [2023-11-21 21:01:43,439 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6891 transitions. [2023-11-21 21:01:43,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6891 transitions. [2023-11-21 21:01:43,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:01:43,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6891 transitions. [2023-11-21 21:01:43,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 328.14285714285717) internal successors, (6891), 21 states have internal predecessors, (6891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:43,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 407.0) internal successors, (8954), 22 states have internal predecessors, (8954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:43,487 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 407.0) internal successors, (8954), 22 states have internal predecessors, (8954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:43,487 INFO L175 Difference]: Start difference. First operand has 369 places, 365 transitions, 808 flow. Second operand 21 states and 6891 transitions. [2023-11-21 21:01:43,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 383 transitions, 1028 flow [2023-11-21 21:01:43,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 383 transitions, 1014 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-21 21:01:43,499 INFO L231 Difference]: Finished difference. Result has 393 places, 378 transitions, 932 flow [2023-11-21 21:01:43,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=932, PETRI_PLACES=393, PETRI_TRANSITIONS=378} [2023-11-21 21:01:43,500 INFO L281 CegarLoopForPetriNet]: 361 programPoint places, 32 predicate places. [2023-11-21 21:01:43,500 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 378 transitions, 932 flow [2023-11-21 21:01:43,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 327.0) internal successors, (5886), 18 states have internal predecessors, (5886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:43,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:43,503 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:43,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-21 21:01:43,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-21 21:01:43,723 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-21 21:01:43,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:43,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1904010086, now seen corresponding path program 3 times [2023-11-21 21:01:43,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:43,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96994529] [2023-11-21 21:01:43,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:43,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:44,071 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-21 21:01:44,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:44,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96994529] [2023-11-21 21:01:44,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96994529] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:01:44,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87313047] [2023-11-21 21:01:44,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 21:01:44,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:01:44,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:01:44,074 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:01:44,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-21 21:01:44,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-21 21:01:44,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 21:01:44,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-21 21:01:44,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:01:44,403 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-21 21:01:44,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:01:44,628 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-21 21:01:44,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87313047] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:01:44,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 21:01:44,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-21 21:01:44,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965225034] [2023-11-21 21:01:44,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 21:01:44,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-21 21:01:44,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:44,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-21 21:01:44,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-21 21:01:44,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 407 [2023-11-21 21:01:44,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 378 transitions, 932 flow. Second operand has 23 states, 23 states have (on average 327.0869565217391) internal successors, (7523), 23 states have internal predecessors, (7523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:44,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:01:44,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 407 [2023-11-21 21:01:44,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:01:49,796 INFO L124 PetriNetUnfolderBase]: 3247/22692 cut-off events. [2023-11-21 21:01:49,796 INFO L125 PetriNetUnfolderBase]: For 288/298 co-relation queries the response was YES. [2023-11-21 21:01:49,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27638 conditions, 22692 events. 3247/22692 cut-off events. For 288/298 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 302955 event pairs, 2680 based on Foata normal form. 3/20817 useless extension candidates. Maximal degree in co-relation 27398. Up to 4691 conditions per place. [2023-11-21 21:01:50,014 INFO L140 encePairwiseOnDemand]: 401/407 looper letters, 44 selfloop transitions, 30 changer transitions 0/395 dead transitions. [2023-11-21 21:01:50,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 395 transitions, 1208 flow [2023-11-21 21:01:50,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-21 21:01:50,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-21 21:01:50,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9827 transitions. [2023-11-21 21:01:50,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8048321048321049 [2023-11-21 21:01:50,031 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 9827 transitions. [2023-11-21 21:01:50,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 9827 transitions. [2023-11-21 21:01:50,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:01:50,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 9827 transitions. [2023-11-21 21:01:50,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 327.56666666666666) internal successors, (9827), 30 states have internal predecessors, (9827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:50,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 407.0) internal successors, (12617), 31 states have internal predecessors, (12617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:50,082 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 407.0) internal successors, (12617), 31 states have internal predecessors, (12617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:50,083 INFO L175 Difference]: Start difference. First operand has 393 places, 378 transitions, 932 flow. Second operand 30 states and 9827 transitions. [2023-11-21 21:01:50,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 395 transitions, 1208 flow [2023-11-21 21:01:50,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 395 transitions, 1178 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-21 21:01:50,095 INFO L231 Difference]: Finished difference. Result has 420 places, 388 transitions, 1060 flow [2023-11-21 21:01:50,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1060, PETRI_PLACES=420, PETRI_TRANSITIONS=388} [2023-11-21 21:01:50,097 INFO L281 CegarLoopForPetriNet]: 361 programPoint places, 59 predicate places. [2023-11-21 21:01:50,097 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 388 transitions, 1060 flow [2023-11-21 21:01:50,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 327.0869565217391) internal successors, (7523), 23 states have internal predecessors, (7523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:50,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:50,100 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:50,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-21 21:01:50,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45123d27-8d25-4bb0-a7da-781c1c295f74/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:01:50,305 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-21 21:01:50,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:50,306 INFO L85 PathProgramCache]: Analyzing trace with hash -799764591, now seen corresponding path program 4 times [2023-11-21 21:01:50,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:50,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369072738] [2023-11-21 21:01:50,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:50,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:01:50,347 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:01:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:01:50,401 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:01:50,404 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 21:01:50,404 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-21 21:01:50,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-21 21:01:50,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-21 21:01:50,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-21 21:01:50,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-21 21:01:50,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-21 21:01:50,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-21 21:01:50,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-21 21:01:50,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-21 21:01:50,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-21 21:01:50,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-21 21:01:50,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-21 21:01:50,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-21 21:01:50,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-21 21:01:50,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-21 21:01:50,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-21 21:01:50,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-21 21:01:50,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-21 21:01:50,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-21 21:01:50,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-21 21:01:50,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-21 21:01:50,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-21 21:01:50,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-21 21:01:50,409 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2023-11-21 21:01:50,410 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 21:01:50,410 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-21 21:01:50,493 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-21 21:01:50,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 463 places, 523 transitions, 1073 flow [2023-11-21 21:01:50,902 INFO L124 PetriNetUnfolderBase]: 127/1039 cut-off events. [2023-11-21 21:01:50,902 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-21 21:01:50,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 1039 events. 127/1039 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6306 event pairs, 1 based on Foata normal form. 0/865 useless extension candidates. Maximal degree in co-relation 717. Up to 16 conditions per place. [2023-11-21 21:01:50,917 INFO L82 GeneralOperation]: Start removeDead. Operand has 463 places, 523 transitions, 1073 flow [2023-11-21 21:01:50,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 463 places, 523 transitions, 1073 flow [2023-11-21 21:01:50,929 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:01:50,929 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=LoopHeads, 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;@2d2fb4ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:01:50,929 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-11-21 21:01:50,934 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 21:01:50,934 INFO L124 PetriNetUnfolderBase]: 7/89 cut-off events. [2023-11-21 21:01:50,935 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 21:01:50,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:50,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:50,935 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-21 21:01:50,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:50,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1689608770, now seen corresponding path program 1 times [2023-11-21 21:01:50,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:50,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299984844] [2023-11-21 21:01:50,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:50,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:50,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:01:50,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:50,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299984844] [2023-11-21 21:01:50,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299984844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:50,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:50,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:01:50,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308686902] [2023-11-21 21:01:50,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:50,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:01:50,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:50,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:01:50,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:01:50,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 523 [2023-11-21 21:01:50,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 523 transitions, 1073 flow. Second operand has 3 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:50,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:01:50,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 523 [2023-11-21 21:01:50,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand