./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/indexer.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_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/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_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/indexer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/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_29bf7a72-f98c-48f1-8387-dd64a6b9958e/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 f24afaadf07ead7c7da85cf6020fd6a6a5b5585e439441b5111a2dea2e7cec4c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:14:39,466 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:14:39,564 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-21 22:14:39,568 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:14:39,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:14:39,599 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:14:39,601 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:14:39,601 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:14:39,603 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:14:39,608 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:14:39,610 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:14:39,610 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:14:39,611 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:14:39,613 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:14:39,613 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:14:39,614 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:14:39,614 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:14:39,614 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:14:39,615 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:14:39,615 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:14:39,616 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:14:39,616 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:14:39,617 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-21 22:14:39,617 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:14:39,617 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:14:39,618 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:14:39,618 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:14:39,619 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:14:39,619 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:14:39,619 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:14:39,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:14:39,620 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:14:39,621 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:14:39,621 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:14:39,621 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:14:39,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:14:39,622 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:14:39,622 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:14:39,622 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:14:39,622 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:14:39,623 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:14:39,623 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_29bf7a72-f98c-48f1-8387-dd64a6b9958e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f24afaadf07ead7c7da85cf6020fd6a6a5b5585e439441b5111a2dea2e7cec4c [2023-11-21 22:14:39,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:14:39,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:14:39,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:14:39,944 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:14:39,945 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:14:39,946 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread/indexer.i [2023-11-21 22:14:43,028 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:14:43,421 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:14:43,421 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/sv-benchmarks/c/pthread/indexer.i [2023-11-21 22:14:43,447 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/data/4c5eeab4e/45dd3e5b8daa4ba69fc0f9dc209185db/FLAGb05d18825 [2023-11-21 22:14:43,474 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/data/4c5eeab4e/45dd3e5b8daa4ba69fc0f9dc209185db [2023-11-21 22:14:43,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:14:43,479 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:14:43,480 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:14:43,480 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:14:43,493 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:14:43,493 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:14:43" (1/1) ... [2023-11-21 22:14:43,497 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@336cc5c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:43, skipping insertion in model container [2023-11-21 22:14:43,498 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:14:43" (1/1) ... [2023-11-21 22:14:43,575 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:14:44,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:14:44,262 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:14:44,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:14:44,433 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:14:44,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:44 WrapperNode [2023-11-21 22:14:44,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:14:44,435 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:14:44,436 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:14:44,436 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:14:44,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:44" (1/1) ... [2023-11-21 22:14:44,480 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:44" (1/1) ... [2023-11-21 22:14:44,523 INFO L138 Inliner]: procedures = 270, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 148 [2023-11-21 22:14:44,524 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:14:44,525 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:14:44,525 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:14:44,525 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:14:44,534 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:44" (1/1) ... [2023-11-21 22:14:44,535 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:44" (1/1) ... [2023-11-21 22:14:44,538 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:44" (1/1) ... [2023-11-21 22:14:44,539 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:44" (1/1) ... [2023-11-21 22:14:44,549 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:44" (1/1) ... [2023-11-21 22:14:44,573 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:44" (1/1) ... [2023-11-21 22:14:44,576 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:44" (1/1) ... [2023-11-21 22:14:44,583 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:44" (1/1) ... [2023-11-21 22:14:44,587 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:14:44,593 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:14:44,594 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:14:44,594 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:14:44,595 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:44" (1/1) ... [2023-11-21 22:14:44,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:14:44,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:14:44,624 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:14:44,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:14:44,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:14:44,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:14:44,658 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-21 22:14:44,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:14:44,658 INFO L130 BoogieDeclarations]: Found specification of procedure thread_routine [2023-11-21 22:14:44,659 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_routine [2023-11-21 22:14:44,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:14:44,659 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-21 22:14:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:14:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:14:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:14:44,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:14:44,662 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 22:14:44,810 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:14:44,812 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:14:45,159 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:14:45,201 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:14:45,203 INFO L308 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-21 22:14:45,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:14:45 BoogieIcfgContainer [2023-11-21 22:14:45,205 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:14:45,208 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:14:45,209 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:14:45,212 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:14:45,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:14:43" (1/3) ... [2023-11-21 22:14:45,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336d6a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:14:45, skipping insertion in model container [2023-11-21 22:14:45,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:44" (2/3) ... [2023-11-21 22:14:45,215 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336d6a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:14:45, skipping insertion in model container [2023-11-21 22:14:45,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:14:45" (3/3) ... [2023-11-21 22:14:45,216 INFO L112 eAbstractionObserver]: Analyzing ICFG indexer.i [2023-11-21 22:14:45,223 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 22:14:45,231 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:14:45,232 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-11-21 22:14:45,232 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:14:45,374 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-21 22:14:45,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 157 transitions, 321 flow [2023-11-21 22:14:45,498 INFO L124 PetriNetUnfolderBase]: 19/195 cut-off events. [2023-11-21 22:14:45,499 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:14:45,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 195 events. 19/195 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 352 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 122. Up to 4 conditions per place. [2023-11-21 22:14:45,516 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 157 transitions, 321 flow [2023-11-21 22:14:45,526 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 157 transitions, 321 flow [2023-11-21 22:14:45,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:14:45,542 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;@69c714fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:14:45,542 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-21 22:14:45,555 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:14:45,555 INFO L124 PetriNetUnfolderBase]: 6/54 cut-off events. [2023-11-21 22:14:45,555 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:14:45,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:45,556 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] [2023-11-21 22:14:45,557 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-21 22:14:45,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:45,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1492750122, now seen corresponding path program 1 times [2023-11-21 22:14:45,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:45,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777758748] [2023-11-21 22:14:45,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:45,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:45,930 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 22:14:45,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:45,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777758748] [2023-11-21 22:14:45,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777758748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:45,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:45,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:14:45,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296000748] [2023-11-21 22:14:45,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:45,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:14:45,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:46,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:14:46,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:14:46,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 157 [2023-11-21 22:14:46,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 157 transitions, 321 flow. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 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 22:14:46,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:46,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 157 [2023-11-21 22:14:46,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:46,278 INFO L124 PetriNetUnfolderBase]: 18/285 cut-off events. [2023-11-21 22:14:46,278 INFO L125 PetriNetUnfolderBase]: For 10/13 co-relation queries the response was YES. [2023-11-21 22:14:46,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 285 events. 18/285 cut-off events. For 10/13 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 784 event pairs, 2 based on Foata normal form. 23/283 useless extension candidates. Maximal degree in co-relation 230. Up to 24 conditions per place. [2023-11-21 22:14:46,286 INFO L140 encePairwiseOnDemand]: 136/157 looper letters, 11 selfloop transitions, 6 changer transitions 13/149 dead transitions. [2023-11-21 22:14:46,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 149 transitions, 351 flow [2023-11-21 22:14:46,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:14:46,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:14:46,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2023-11-21 22:14:46,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.910828025477707 [2023-11-21 22:14:46,312 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2023-11-21 22:14:46,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2023-11-21 22:14:46,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:46,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2023-11-21 22:14:46,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 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 22:14:46,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 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 22:14:46,336 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 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 22:14:46,339 INFO L175 Difference]: Start difference. First operand has 145 places, 157 transitions, 321 flow. Second operand 3 states and 429 transitions. [2023-11-21 22:14:46,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 149 transitions, 351 flow [2023-11-21 22:14:46,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 149 transitions, 351 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:14:46,354 INFO L231 Difference]: Finished difference. Result has 145 places, 134 transitions, 299 flow [2023-11-21 22:14:46,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=145, PETRI_TRANSITIONS=134} [2023-11-21 22:14:46,361 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, 0 predicate places. [2023-11-21 22:14:46,361 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 134 transitions, 299 flow [2023-11-21 22:14:46,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 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 22:14:46,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:46,363 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] [2023-11-21 22:14:46,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:14:46,364 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-21 22:14:46,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:46,366 INFO L85 PathProgramCache]: Analyzing trace with hash 487878786, now seen corresponding path program 1 times [2023-11-21 22:14:46,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:46,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421392779] [2023-11-21 22:14:46,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:46,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:46,606 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 22:14:46,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:46,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421392779] [2023-11-21 22:14:46,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421392779] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:14:46,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652958075] [2023-11-21 22:14:46,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:46,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:46,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:14:46,611 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:14:46,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:14:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:46,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:14:46,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:46,834 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 22:14:46,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:14:46,890 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 22:14:46,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652958075] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:14:46,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:14:46,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-21 22:14:46,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540696765] [2023-11-21 22:14:46,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:14:46,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 22:14:46,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:46,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 22:14:46,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:14:47,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 157 [2023-11-21 22:14:47,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 134 transitions, 299 flow. Second operand has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 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 22:14:47,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:47,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 157 [2023-11-21 22:14:47,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:47,293 INFO L124 PetriNetUnfolderBase]: 25/348 cut-off events. [2023-11-21 22:14:47,293 INFO L125 PetriNetUnfolderBase]: For 17/23 co-relation queries the response was YES. [2023-11-21 22:14:47,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 348 events. 25/348 cut-off events. For 17/23 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1142 event pairs, 3 based on Foata normal form. 4/317 useless extension candidates. Maximal degree in co-relation 325. Up to 21 conditions per place. [2023-11-21 22:14:47,298 INFO L140 encePairwiseOnDemand]: 145/157 looper letters, 19 selfloop transitions, 15 changer transitions 0/148 dead transitions. [2023-11-21 22:14:47,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 148 transitions, 397 flow [2023-11-21 22:14:47,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 22:14:47,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-21 22:14:47,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1256 transitions. [2023-11-21 22:14:47,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8 [2023-11-21 22:14:47,305 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1256 transitions. [2023-11-21 22:14:47,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1256 transitions. [2023-11-21 22:14:47,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:47,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1256 transitions. [2023-11-21 22:14:47,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 125.6) internal successors, (1256), 10 states have internal predecessors, (1256), 0 states have call successors, (0), 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 22:14:47,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 157.0) internal successors, (1727), 11 states have internal predecessors, (1727), 0 states have call successors, (0), 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 22:14:47,343 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 157.0) internal successors, (1727), 11 states have internal predecessors, (1727), 0 states have call successors, (0), 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 22:14:47,344 INFO L175 Difference]: Start difference. First operand has 145 places, 134 transitions, 299 flow. Second operand 10 states and 1256 transitions. [2023-11-21 22:14:47,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 148 transitions, 397 flow [2023-11-21 22:14:47,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 148 transitions, 391 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:14:47,357 INFO L231 Difference]: Finished difference. Result has 145 places, 142 transitions, 369 flow [2023-11-21 22:14:47,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=369, PETRI_PLACES=145, PETRI_TRANSITIONS=142} [2023-11-21 22:14:47,359 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, 0 predicate places. [2023-11-21 22:14:47,360 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 142 transitions, 369 flow [2023-11-21 22:14:47,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 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 22:14:47,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:47,367 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:47,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:14:47,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:47,587 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-21 22:14:47,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:47,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1846364926, now seen corresponding path program 2 times [2023-11-21 22:14:47,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:47,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290322843] [2023-11-21 22:14:47,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:47,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:47,920 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:47,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:47,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290322843] [2023-11-21 22:14:47,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290322843] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:14:47,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043205426] [2023-11-21 22:14:47,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:14:47,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:47,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:14:47,923 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:14:47,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:14:48,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-21 22:14:48,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:14:48,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-21 22:14:48,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:48,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-21 22:14:48,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-21 22:14:48,208 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:14:48,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-21 22:14:48,260 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:14:48,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2023-11-21 22:14:48,307 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-21 22:14:48,308 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:48,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043205426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:48,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:14:48,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2023-11-21 22:14:48,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215784706] [2023-11-21 22:14:48,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:48,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:14:48,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:48,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:14:48,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:14:48,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 157 [2023-11-21 22:14:48,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 142 transitions, 369 flow. Second operand has 7 states, 7 states have (on average 116.14285714285714) internal successors, (813), 7 states have internal predecessors, (813), 0 states have call successors, (0), 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 22:14:48,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:48,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 157 [2023-11-21 22:14:48,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:48,923 INFO L124 PetriNetUnfolderBase]: 270/1192 cut-off events. [2023-11-21 22:14:48,923 INFO L125 PetriNetUnfolderBase]: For 18/21 co-relation queries the response was YES. [2023-11-21 22:14:48,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1759 conditions, 1192 events. 270/1192 cut-off events. For 18/21 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7135 event pairs, 86 based on Foata normal form. 0/1076 useless extension candidates. Maximal degree in co-relation 1688. Up to 409 conditions per place. [2023-11-21 22:14:48,933 INFO L140 encePairwiseOnDemand]: 137/157 looper letters, 36 selfloop transitions, 55 changer transitions 0/203 dead transitions. [2023-11-21 22:14:48,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 203 transitions, 673 flow [2023-11-21 22:14:48,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:14:48,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 22:14:48,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 897 transitions. [2023-11-21 22:14:48,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.816196542311192 [2023-11-21 22:14:48,937 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 897 transitions. [2023-11-21 22:14:48,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 897 transitions. [2023-11-21 22:14:48,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:48,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 897 transitions. [2023-11-21 22:14:48,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 128.14285714285714) internal successors, (897), 7 states have internal predecessors, (897), 0 states have call successors, (0), 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 22:14:48,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 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 22:14:48,946 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 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 22:14:48,946 INFO L175 Difference]: Start difference. First operand has 145 places, 142 transitions, 369 flow. Second operand 7 states and 897 transitions. [2023-11-21 22:14:48,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 203 transitions, 673 flow [2023-11-21 22:14:48,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 203 transitions, 663 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-21 22:14:48,954 INFO L231 Difference]: Finished difference. Result has 155 places, 195 transitions, 720 flow [2023-11-21 22:14:48,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=720, PETRI_PLACES=155, PETRI_TRANSITIONS=195} [2023-11-21 22:14:48,955 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, 10 predicate places. [2023-11-21 22:14:48,956 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 195 transitions, 720 flow [2023-11-21 22:14:48,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.14285714285714) internal successors, (813), 7 states have internal predecessors, (813), 0 states have call successors, (0), 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 22:14:48,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:48,957 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:48,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:14:49,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:49,171 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread_routineErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-21 22:14:49,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:49,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1155983884, now seen corresponding path program 1 times [2023-11-21 22:14:49,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:49,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075009026] [2023-11-21 22:14:49,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:49,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:49,353 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:49,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:49,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075009026] [2023-11-21 22:14:49,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075009026] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:14:49,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473145167] [2023-11-21 22:14:49,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:49,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:49,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:14:49,357 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:14:49,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:14:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:49,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:14:49,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:49,535 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:49,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:14:49,649 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:49,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473145167] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:14:49,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:14:49,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-21 22:14:49,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254268152] [2023-11-21 22:14:49,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:14:49,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-21 22:14:49,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:49,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-21 22:14:49,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-21 22:14:50,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 157 [2023-11-21 22:14:50,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 195 transitions, 720 flow. Second operand has 18 states, 18 states have (on average 124.05555555555556) internal successors, (2233), 18 states have internal predecessors, (2233), 0 states have call successors, (0), 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 22:14:50,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:50,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 157 [2023-11-21 22:14:50,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:50,432 INFO L124 PetriNetUnfolderBase]: 159/819 cut-off events. [2023-11-21 22:14:50,432 INFO L125 PetriNetUnfolderBase]: For 113/118 co-relation queries the response was YES. [2023-11-21 22:14:50,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1450 conditions, 819 events. 159/819 cut-off events. For 113/118 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4241 event pairs, 16 based on Foata normal form. 6/762 useless extension candidates. Maximal degree in co-relation 1300. Up to 156 conditions per place. [2023-11-21 22:14:50,440 INFO L140 encePairwiseOnDemand]: 145/157 looper letters, 23 selfloop transitions, 27 changer transitions 0/217 dead transitions. [2023-11-21 22:14:50,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 217 transitions, 916 flow [2023-11-21 22:14:50,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-21 22:14:50,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-21 22:14:50,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2738 transitions. [2023-11-21 22:14:50,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7927041111754487 [2023-11-21 22:14:50,450 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2738 transitions. [2023-11-21 22:14:50,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2738 transitions. [2023-11-21 22:14:50,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:50,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2738 transitions. [2023-11-21 22:14:50,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 124.45454545454545) internal successors, (2738), 22 states have internal predecessors, (2738), 0 states have call successors, (0), 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 22:14:50,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 157.0) internal successors, (3611), 23 states have internal predecessors, (3611), 0 states have call successors, (0), 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 22:14:50,471 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 157.0) internal successors, (3611), 23 states have internal predecessors, (3611), 0 states have call successors, (0), 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 22:14:50,471 INFO L175 Difference]: Start difference. First operand has 155 places, 195 transitions, 720 flow. Second operand 22 states and 2738 transitions. [2023-11-21 22:14:50,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 217 transitions, 916 flow [2023-11-21 22:14:50,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 217 transitions, 915 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:14:50,482 INFO L231 Difference]: Finished difference. Result has 180 places, 208 transitions, 867 flow [2023-11-21 22:14:50,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=867, PETRI_PLACES=180, PETRI_TRANSITIONS=208} [2023-11-21 22:14:50,484 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, 35 predicate places. [2023-11-21 22:14:50,484 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 208 transitions, 867 flow [2023-11-21 22:14:50,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 124.05555555555556) internal successors, (2233), 18 states have internal predecessors, (2233), 0 states have call successors, (0), 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 22:14:50,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:50,486 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:14:50,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:14:50,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:50,704 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread_routineErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-21 22:14:50,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:50,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1221160180, now seen corresponding path program 2 times [2023-11-21 22:14:50,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:50,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370305897] [2023-11-21 22:14:50,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:50,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:51,153 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:51,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:51,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370305897] [2023-11-21 22:14:51,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370305897] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:14:51,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571611786] [2023-11-21 22:14:51,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:14:51,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:51,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:14:51,155 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:14:51,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 22:14:51,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-21 22:14:51,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:14:51,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-21 22:14:51,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:51,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-21 22:14:51,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-21 22:14:51,370 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:14:51,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-21 22:14:51,427 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:14:51,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-21 22:14:51,472 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-21 22:14:51,473 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:51,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571611786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:51,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:14:51,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2023-11-21 22:14:51,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589376032] [2023-11-21 22:14:51,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:51,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:14:51,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:51,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:14:51,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-11-21 22:14:51,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 157 [2023-11-21 22:14:51,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 208 transitions, 867 flow. Second operand has 6 states, 6 states have (on average 129.83333333333334) internal successors, (779), 6 states have internal predecessors, (779), 0 states have call successors, (0), 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 22:14:51,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:51,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 157 [2023-11-21 22:14:51,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:52,038 INFO L124 PetriNetUnfolderBase]: 247/1305 cut-off events. [2023-11-21 22:14:52,039 INFO L125 PetriNetUnfolderBase]: For 325/340 co-relation queries the response was YES. [2023-11-21 22:14:52,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2458 conditions, 1305 events. 247/1305 cut-off events. For 325/340 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 7804 event pairs, 15 based on Foata normal form. 1/1216 useless extension candidates. Maximal degree in co-relation 2300. Up to 289 conditions per place. [2023-11-21 22:14:52,051 INFO L140 encePairwiseOnDemand]: 146/157 looper letters, 52 selfloop transitions, 33 changer transitions 0/239 dead transitions. [2023-11-21 22:14:52,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 239 transitions, 1178 flow [2023-11-21 22:14:52,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:14:52,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:14:52,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 812 transitions. [2023-11-21 22:14:52,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.861995753715499 [2023-11-21 22:14:52,055 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 812 transitions. [2023-11-21 22:14:52,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 812 transitions. [2023-11-21 22:14:52,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:52,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 812 transitions. [2023-11-21 22:14:52,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 135.33333333333334) internal successors, (812), 6 states have internal predecessors, (812), 0 states have call successors, (0), 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 22:14:52,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 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 22:14:52,064 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 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 22:14:52,064 INFO L175 Difference]: Start difference. First operand has 180 places, 208 transitions, 867 flow. Second operand 6 states and 812 transitions. [2023-11-21 22:14:52,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 239 transitions, 1178 flow [2023-11-21 22:14:52,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 239 transitions, 1150 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-21 22:14:52,076 INFO L231 Difference]: Finished difference. Result has 184 places, 236 transitions, 1137 flow [2023-11-21 22:14:52,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1137, PETRI_PLACES=184, PETRI_TRANSITIONS=236} [2023-11-21 22:14:52,079 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, 39 predicate places. [2023-11-21 22:14:52,080 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 236 transitions, 1137 flow [2023-11-21 22:14:52,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.83333333333334) internal successors, (779), 6 states have internal predecessors, (779), 0 states have call successors, (0), 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 22:14:52,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:52,083 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:14:52,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:14:52,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:52,307 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-21 22:14:52,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:52,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2040659688, now seen corresponding path program 1 times [2023-11-21 22:14:52,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:52,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7619293] [2023-11-21 22:14:52,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:52,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:52,473 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-21 22:14:52,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:52,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7619293] [2023-11-21 22:14:52,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7619293] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:14:52,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686288262] [2023-11-21 22:14:52,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:52,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:52,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:14:52,476 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:14:52,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 22:14:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:52,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-21 22:14:52,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:14:52,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:14:53,247 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:14:53,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686288262] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:14:53,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:14:53,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 17, 17] total 34 [2023-11-21 22:14:53,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180806536] [2023-11-21 22:14:53,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:14:53,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-21 22:14:53,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:53,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-21 22:14:53,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2023-11-21 22:14:53,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 157 [2023-11-21 22:14:53,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 236 transitions, 1137 flow. Second operand has 34 states, 34 states have (on average 122.47058823529412) internal successors, (4164), 34 states have internal predecessors, (4164), 0 states have call successors, (0), 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 22:14:53,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:53,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 157 [2023-11-21 22:14:53,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:54,843 INFO L124 PetriNetUnfolderBase]: 240/1533 cut-off events. [2023-11-21 22:14:54,843 INFO L125 PetriNetUnfolderBase]: For 670/686 co-relation queries the response was YES. [2023-11-21 22:14:54,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2850 conditions, 1533 events. 240/1533 cut-off events. For 670/686 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 9641 event pairs, 15 based on Foata normal form. 15/1446 useless extension candidates. Maximal degree in co-relation 2506. Up to 246 conditions per place. [2023-11-21 22:14:54,856 INFO L140 encePairwiseOnDemand]: 146/157 looper letters, 31 selfloop transitions, 49 changer transitions 0/263 dead transitions. [2023-11-21 22:14:54,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 263 transitions, 1524 flow [2023-11-21 22:14:54,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-21 22:14:54,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-11-21 22:14:54,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 5729 transitions. [2023-11-21 22:14:54,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7763924651036725 [2023-11-21 22:14:54,874 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 5729 transitions. [2023-11-21 22:14:54,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 5729 transitions. [2023-11-21 22:14:54,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:54,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 5729 transitions. [2023-11-21 22:14:54,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 121.8936170212766) internal successors, (5729), 47 states have internal predecessors, (5729), 0 states have call successors, (0), 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 22:14:54,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 157.0) internal successors, (7536), 48 states have internal predecessors, (7536), 0 states have call successors, (0), 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 22:14:54,917 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 157.0) internal successors, (7536), 48 states have internal predecessors, (7536), 0 states have call successors, (0), 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 22:14:54,917 INFO L175 Difference]: Start difference. First operand has 184 places, 236 transitions, 1137 flow. Second operand 47 states and 5729 transitions. [2023-11-21 22:14:54,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 263 transitions, 1524 flow [2023-11-21 22:14:54,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 263 transitions, 1506 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-11-21 22:14:54,938 INFO L231 Difference]: Finished difference. Result has 225 places, 245 transitions, 1373 flow [2023-11-21 22:14:54,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=1062, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=1373, PETRI_PLACES=225, PETRI_TRANSITIONS=245} [2023-11-21 22:14:54,942 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, 80 predicate places. [2023-11-21 22:14:54,942 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 245 transitions, 1373 flow [2023-11-21 22:14:54,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 122.47058823529412) internal successors, (4164), 34 states have internal predecessors, (4164), 0 states have call successors, (0), 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 22:14:54,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:54,946 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:54,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 22:14:55,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-21 22:14:55,167 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-21 22:14:55,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:55,168 INFO L85 PathProgramCache]: Analyzing trace with hash -2095617247, now seen corresponding path program 1 times [2023-11-21 22:14:55,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:55,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857006021] [2023-11-21 22:14:55,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:55,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:56,310 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-21 22:14:56,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:56,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857006021] [2023-11-21 22:14:56,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857006021] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:14:56,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427063605] [2023-11-21 22:14:56,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:56,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:14:56,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:14:56,312 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:14:56,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 22:14:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:56,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-21 22:14:56,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:56,638 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-21 22:14:56,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:14:57,852 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-21 22:14:57,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427063605] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:14:57,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:14:57,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 66 [2023-11-21 22:14:57,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597021327] [2023-11-21 22:14:57,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:14:57,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-11-21 22:14:57,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:57,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-11-21 22:14:57,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1122, Invalid=3168, Unknown=0, NotChecked=0, Total=4290 [2023-11-21 22:14:58,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 157 [2023-11-21 22:14:58,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 245 transitions, 1373 flow. Second operand has 66 states, 66 states have (on average 124.03030303030303) internal successors, (8186), 66 states have internal predecessors, (8186), 0 states have call successors, (0), 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 22:14:58,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:58,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 157 [2023-11-21 22:14:58,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:15:01,307 INFO L124 PetriNetUnfolderBase]: 226/1496 cut-off events. [2023-11-21 22:15:01,307 INFO L125 PetriNetUnfolderBase]: For 2595/2609 co-relation queries the response was YES. [2023-11-21 22:15:01,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3199 conditions, 1496 events. 226/1496 cut-off events. For 2595/2609 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 8701 event pairs, 10 based on Foata normal form. 17/1419 useless extension candidates. Maximal degree in co-relation 2357. Up to 233 conditions per place. [2023-11-21 22:15:01,323 INFO L140 encePairwiseOnDemand]: 148/157 looper letters, 44 selfloop transitions, 96 changer transitions 0/325 dead transitions. [2023-11-21 22:15:01,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 325 transitions, 2449 flow [2023-11-21 22:15:01,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-11-21 22:15:01,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2023-11-21 22:15:01,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 11502 transitions. [2023-11-21 22:15:01,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.787754263406616 [2023-11-21 22:15:01,352 INFO L72 ComplementDD]: Start complementDD. Operand 93 states and 11502 transitions. [2023-11-21 22:15:01,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 93 states and 11502 transitions. [2023-11-21 22:15:01,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:15:01,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 93 states and 11502 transitions. [2023-11-21 22:15:01,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 94 states, 93 states have (on average 123.6774193548387) internal successors, (11502), 93 states have internal predecessors, (11502), 0 states have call successors, (0), 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 22:15:01,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 94 states, 94 states have (on average 157.0) internal successors, (14758), 94 states have internal predecessors, (14758), 0 states have call successors, (0), 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 22:15:01,420 INFO L81 ComplementDD]: Finished complementDD. Result has 94 states, 94 states have (on average 157.0) internal successors, (14758), 94 states have internal predecessors, (14758), 0 states have call successors, (0), 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 22:15:01,420 INFO L175 Difference]: Start difference. First operand has 225 places, 245 transitions, 1373 flow. Second operand 93 states and 11502 transitions. [2023-11-21 22:15:01,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 325 transitions, 2449 flow [2023-11-21 22:15:01,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 325 transitions, 2354 flow, removed 26 selfloop flow, removed 20 redundant places. [2023-11-21 22:15:01,448 INFO L231 Difference]: Finished difference. Result has 314 places, 294 transitions, 2009 flow [2023-11-21 22:15:01,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=93, PETRI_FLOW=2009, PETRI_PLACES=314, PETRI_TRANSITIONS=294} [2023-11-21 22:15:01,449 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, 169 predicate places. [2023-11-21 22:15:01,450 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 294 transitions, 2009 flow [2023-11-21 22:15:01,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 124.03030303030303) internal successors, (8186), 66 states have internal predecessors, (8186), 0 states have call successors, (0), 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 22:15:01,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:15:01,452 INFO L208 CegarLoopForPetriNet]: trace histogram [31, 31, 31, 31, 31, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:15:01,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 22:15:01,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-21 22:15:01,667 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-21 22:15:01,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:01,667 INFO L85 PathProgramCache]: Analyzing trace with hash -977451231, now seen corresponding path program 2 times [2023-11-21 22:15:01,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:01,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600278089] [2023-11-21 22:15:01,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:01,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2369 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-21 22:15:04,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:04,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600278089] [2023-11-21 22:15:04,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600278089] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:15:04,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910507679] [2023-11-21 22:15:04,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:15:04,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:15:04,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:15:04,927 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:15:04,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 22:15:05,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:15:05,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:15:05,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-21 22:15:05,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:15:05,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2369 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-21 22:15:05,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:15:09,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2369 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-21 22:15:09,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910507679] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:15:09,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:15:09,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 130 [2023-11-21 22:15:09,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265170831] [2023-11-21 22:15:09,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:15:09,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2023-11-21 22:15:09,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:09,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2023-11-21 22:15:09,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4290, Invalid=12480, Unknown=0, NotChecked=0, Total=16770 [2023-11-21 22:15:11,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 157 [2023-11-21 22:15:11,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 294 transitions, 2009 flow. Second operand has 130 states, 130 states have (on average 124.01538461538462) internal successors, (16122), 130 states have internal predecessors, (16122), 0 states have call successors, (0), 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 22:15:11,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:15:11,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 157 [2023-11-21 22:15:11,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:15:19,847 INFO L124 PetriNetUnfolderBase]: 226/1656 cut-off events. [2023-11-21 22:15:19,848 INFO L125 PetriNetUnfolderBase]: For 17460/17474 co-relation queries the response was YES. [2023-11-21 22:15:19,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4314 conditions, 1656 events. 226/1656 cut-off events. For 17460/17474 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 8706 event pairs, 10 based on Foata normal form. 33/1595 useless extension candidates. Maximal degree in co-relation 2362. Up to 233 conditions per place. [2023-11-21 22:15:19,866 INFO L140 encePairwiseOnDemand]: 148/157 looper letters, 76 selfloop transitions, 192 changer transitions 0/453 dead transitions. [2023-11-21 22:15:19,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 453 transitions, 4573 flow [2023-11-21 22:15:19,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2023-11-21 22:15:19,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2023-11-21 22:15:19,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 23358 transitions. [2023-11-21 22:15:19,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7871802648872712 [2023-11-21 22:15:19,907 INFO L72 ComplementDD]: Start complementDD. Operand 189 states and 23358 transitions. [2023-11-21 22:15:19,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 189 states and 23358 transitions. [2023-11-21 22:15:19,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:15:19,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 189 states and 23358 transitions. [2023-11-21 22:15:19,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 190 states, 189 states have (on average 123.58730158730158) internal successors, (23358), 189 states have internal predecessors, (23358), 0 states have call successors, (0), 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 22:15:20,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 190 states, 190 states have (on average 157.0) internal successors, (29830), 190 states have internal predecessors, (29830), 0 states have call successors, (0), 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 22:15:20,025 INFO L81 ComplementDD]: Finished complementDD. Result has 190 states, 190 states have (on average 157.0) internal successors, (29830), 190 states have internal predecessors, (29830), 0 states have call successors, (0), 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 22:15:20,025 INFO L175 Difference]: Start difference. First operand has 314 places, 294 transitions, 2009 flow. Second operand 189 states and 23358 transitions. [2023-11-21 22:15:20,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 453 transitions, 4573 flow [2023-11-21 22:15:20,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 453 transitions, 4452 flow, removed 17 selfloop flow, removed 42 redundant places. [2023-11-21 22:15:20,197 INFO L231 Difference]: Finished difference. Result has 493 places, 391 transitions, 3519 flow [2023-11-21 22:15:20,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=1888, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=189, PETRI_FLOW=3519, PETRI_PLACES=493, PETRI_TRANSITIONS=391} [2023-11-21 22:15:20,199 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, 348 predicate places. [2023-11-21 22:15:20,199 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 391 transitions, 3519 flow [2023-11-21 22:15:20,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 124.01538461538462) internal successors, (16122), 130 states have internal predecessors, (16122), 0 states have call successors, (0), 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 22:15:20,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:15:20,203 INFO L208 CegarLoopForPetriNet]: trace histogram [63, 63, 63, 63, 63, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:15:20,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-21 22:15:20,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bf7a72-f98c-48f1-8387-dd64a6b9958e/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-21 22:15:20,425 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-21 22:15:20,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:20,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1455488801, now seen corresponding path program 3 times [2023-11-21 22:15:20,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:20,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050198714] [2023-11-21 22:15:20,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:20,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat