./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-deagle/floating_read-5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/floating_read-5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya --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 2f28efd84e1dbcbcea7683bca483f8f3b9fbdd333eb36f517b9f12d5bccb885d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:52:15,015 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:52:15,086 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-29 00:52:15,092 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:52:15,093 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:52:15,119 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:52:15,120 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:52:15,121 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:52:15,121 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:52:15,122 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:52:15,123 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:52:15,123 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:52:15,124 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:52:15,124 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:52:15,125 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:52:15,126 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:52:15,126 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:52:15,127 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:52:15,127 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:52:15,127 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:52:15,128 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:52:15,129 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:52:15,129 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-29 00:52:15,130 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:52:15,130 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:52:15,130 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:52:15,131 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:52:15,131 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:52:15,132 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:52:15,132 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:52:15,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:52:15,133 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:52:15,133 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:52:15,134 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:52:15,134 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:52:15,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:52:15,134 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:52:15,135 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:52:15,135 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:52:15,135 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:52:15,135 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:52:15,136 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_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f28efd84e1dbcbcea7683bca483f8f3b9fbdd333eb36f517b9f12d5bccb885d [2023-11-29 00:52:15,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:52:15,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:52:15,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:52:15,380 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:52:15,380 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:52:15,381 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-deagle/floating_read-5.i [2023-11-29 00:52:18,033 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:52:18,276 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:52:18,277 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/sv-benchmarks/c/pthread-deagle/floating_read-5.i [2023-11-29 00:52:18,293 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/data/18a6afa06/565a63b0294c489c9eeb45f39cd661c5/FLAG9eb4d1193 [2023-11-29 00:52:18,306 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/data/18a6afa06/565a63b0294c489c9eeb45f39cd661c5 [2023-11-29 00:52:18,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:52:18,309 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:52:18,310 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:52:18,310 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:52:18,315 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:52:18,315 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:52:18" (1/1) ... [2023-11-29 00:52:18,316 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18925070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:52:18, skipping insertion in model container [2023-11-29 00:52:18,317 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:52:18" (1/1) ... [2023-11-29 00:52:18,360 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:52:18,622 WARN L1590 CHandler]: Possible shadowing of function thread [2023-11-29 00:52:18,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:52:18,643 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:52:18,675 WARN L1590 CHandler]: Possible shadowing of function thread [2023-11-29 00:52:18,681 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:52:18,707 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:52:18,707 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:52:18,713 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:52:18,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:52:18 WrapperNode [2023-11-29 00:52:18,713 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:52:18,714 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:52:18,715 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:52:18,715 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:52:18,720 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:52:18" (1/1) ... [2023-11-29 00:52:18,735 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:52:18" (1/1) ... [2023-11-29 00:52:18,754 INFO L138 Inliner]: procedures = 162, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2023-11-29 00:52:18,755 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:52:18,755 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:52:18,756 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:52:18,756 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:52:18,762 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:52:18" (1/1) ... [2023-11-29 00:52:18,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:52:18" (1/1) ... [2023-11-29 00:52:18,766 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:52:18" (1/1) ... [2023-11-29 00:52:18,766 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:52:18" (1/1) ... [2023-11-29 00:52:18,773 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:52:18" (1/1) ... [2023-11-29 00:52:18,777 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:52:18" (1/1) ... [2023-11-29 00:52:18,779 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:52:18" (1/1) ... [2023-11-29 00:52:18,780 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:52:18" (1/1) ... [2023-11-29 00:52:18,783 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:52:18,784 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:52:18,784 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:52:18,784 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:52:18,785 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:52:18" (1/1) ... [2023-11-29 00:52:18,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:52:18,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:52:18,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:52:18,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:52:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 00:52:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 00:52:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 00:52:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:52:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:52:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:52:18,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 00:52:18,849 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-29 00:52:18,849 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-29 00:52:18,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 00:52:18,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:52:18,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:52:18,851 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 00:52:18,975 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:52:18,976 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:52:19,112 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:52:19,137 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:52:19,137 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 00:52:19,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:52:19 BoogieIcfgContainer [2023-11-29 00:52:19,139 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:52:19,141 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:52:19,141 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:52:19,144 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:52:19,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:52:18" (1/3) ... [2023-11-29 00:52:19,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b89dae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:52:19, skipping insertion in model container [2023-11-29 00:52:19,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:52:18" (2/3) ... [2023-11-29 00:52:19,146 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b89dae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:52:19, skipping insertion in model container [2023-11-29 00:52:19,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:52:19" (3/3) ... [2023-11-29 00:52:19,147 INFO L112 eAbstractionObserver]: Analyzing ICFG floating_read-5.i [2023-11-29 00:52:19,155 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 00:52:19,166 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:52:19,166 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-29 00:52:19,167 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:52:19,209 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-29 00:52:19,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 72 transitions, 151 flow [2023-11-29 00:52:19,283 INFO L124 PetriNetUnfolderBase]: 9/110 cut-off events. [2023-11-29 00:52:19,283 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 00:52:19,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 110 events. 9/110 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 221 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 54. Up to 4 conditions per place. [2023-11-29 00:52:19,287 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 72 transitions, 151 flow [2023-11-29 00:52:19,290 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 72 transitions, 151 flow [2023-11-29 00:52:19,299 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:52:19,306 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;@71fb52b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:52:19,306 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-29 00:52:19,312 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:52:19,312 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-29 00:52:19,312 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:52:19,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:19,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:52:19,313 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2023-11-29 00:52:19,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:19,319 INFO L85 PathProgramCache]: Analyzing trace with hash 147015405, now seen corresponding path program 1 times [2023-11-29 00:52:19,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:19,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157297196] [2023-11-29 00:52:19,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:19,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:19,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:19,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:19,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157297196] [2023-11-29 00:52:19,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157297196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:52:19,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:52:19,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:52:19,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433825862] [2023-11-29 00:52:19,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:52:19,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:52:19,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:19,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:52:19,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:52:19,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 72 [2023-11-29 00:52:19,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 151 flow. Second operand has 2 states, 2 states have (on average 61.5) internal successors, (123), 2 states have internal predecessors, (123), 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) [2023-11-29 00:52:19,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:19,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 72 [2023-11-29 00:52:19,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:19,582 INFO L124 PetriNetUnfolderBase]: 1/94 cut-off events. [2023-11-29 00:52:19,582 INFO L125 PetriNetUnfolderBase]: For 5/6 co-relation queries the response was YES. [2023-11-29 00:52:19,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 94 events. 1/94 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 174 event pairs, 0 based on Foata normal form. 8/92 useless extension candidates. Maximal degree in co-relation 4. Up to 5 conditions per place. [2023-11-29 00:52:19,584 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 4 selfloop transitions, 0 changer transitions 12/63 dead transitions. [2023-11-29 00:52:19,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 141 flow [2023-11-29 00:52:19,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:52:19,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-29 00:52:19,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 132 transitions. [2023-11-29 00:52:19,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2023-11-29 00:52:19,598 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 132 transitions. [2023-11-29 00:52:19,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 132 transitions. [2023-11-29 00:52:19,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:52:19,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 132 transitions. [2023-11-29 00:52:19,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 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) [2023-11-29 00:52:19,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2023-11-29 00:52:19,610 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2023-11-29 00:52:19,612 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 151 flow. Second operand 2 states and 132 transitions. [2023-11-29 00:52:19,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 141 flow [2023-11-29 00:52:19,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 63 transitions, 141 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:52:19,619 INFO L231 Difference]: Finished difference. Result has 66 places, 51 transitions, 109 flow [2023-11-29 00:52:19,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=109, PETRI_PLACES=66, PETRI_TRANSITIONS=51} [2023-11-29 00:52:19,625 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -4 predicate places. [2023-11-29 00:52:19,625 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 51 transitions, 109 flow [2023-11-29 00:52:19,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 61.5) internal successors, (123), 2 states have internal predecessors, (123), 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) [2023-11-29 00:52:19,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:19,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:52:19,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:52:19,627 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2023-11-29 00:52:19,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:19,627 INFO L85 PathProgramCache]: Analyzing trace with hash 215940231, now seen corresponding path program 1 times [2023-11-29 00:52:19,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:19,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783608592] [2023-11-29 00:52:19,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:19,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:19,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:19,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:19,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783608592] [2023-11-29 00:52:19,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783608592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:52:19,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:52:19,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:52:19,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388133465] [2023-11-29 00:52:19,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:52:19,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:52:19,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:19,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:52:19,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:52:19,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 72 [2023-11-29 00:52:19,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 51 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2023-11-29 00:52:19,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:19,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 72 [2023-11-29 00:52:19,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:19,814 INFO L124 PetriNetUnfolderBase]: 3/88 cut-off events. [2023-11-29 00:52:19,814 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 00:52:19,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 88 events. 3/88 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 1/83 useless extension candidates. Maximal degree in co-relation 106. Up to 13 conditions per place. [2023-11-29 00:52:19,815 INFO L140 encePairwiseOnDemand]: 69/72 looper letters, 8 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-11-29 00:52:19,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 52 transitions, 131 flow [2023-11-29 00:52:19,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:52:19,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:52:19,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2023-11-29 00:52:19,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8148148148148148 [2023-11-29 00:52:19,818 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 176 transitions. [2023-11-29 00:52:19,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 176 transitions. [2023-11-29 00:52:19,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:52:19,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 176 transitions. [2023-11-29 00:52:19,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2023-11-29 00:52:19,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 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) [2023-11-29 00:52:19,823 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 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) [2023-11-29 00:52:19,823 INFO L175 Difference]: Start difference. First operand has 66 places, 51 transitions, 109 flow. Second operand 3 states and 176 transitions. [2023-11-29 00:52:19,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 52 transitions, 131 flow [2023-11-29 00:52:19,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 52 transitions, 131 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:52:19,826 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 117 flow [2023-11-29 00:52:19,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-11-29 00:52:19,827 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -13 predicate places. [2023-11-29 00:52:19,827 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 117 flow [2023-11-29 00:52:19,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2023-11-29 00:52:19,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:19,828 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] [2023-11-29 00:52:19,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:52:19,828 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2023-11-29 00:52:19,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:19,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1091214200, now seen corresponding path program 1 times [2023-11-29 00:52:19,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:19,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194719035] [2023-11-29 00:52:19,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:19,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:19,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:19,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:19,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194719035] [2023-11-29 00:52:19,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194719035] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:52:19,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973583743] [2023-11-29 00:52:19,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:19,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:19,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:52:19,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:52:19,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:52:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:20,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:52:20,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:52:20,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:52:20,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:52:20,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973583743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:52:20,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:52:20,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-29 00:52:20,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273082749] [2023-11-29 00:52:20,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:52:20,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:52:20,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:20,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:52:20,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:52:20,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 72 [2023-11-29 00:52:20,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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) [2023-11-29 00:52:20,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:20,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 72 [2023-11-29 00:52:20,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:20,108 INFO L124 PetriNetUnfolderBase]: 1/95 cut-off events. [2023-11-29 00:52:20,109 INFO L125 PetriNetUnfolderBase]: For 8/9 co-relation queries the response was YES. [2023-11-29 00:52:20,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 95 events. 1/95 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 123 event pairs, 0 based on Foata normal form. 1/90 useless extension candidates. Maximal degree in co-relation 116. Up to 8 conditions per place. [2023-11-29 00:52:20,110 INFO L140 encePairwiseOnDemand]: 68/72 looper letters, 7 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2023-11-29 00:52:20,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 146 flow [2023-11-29 00:52:20,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:52:20,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:52:20,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 185 transitions. [2023-11-29 00:52:20,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8564814814814815 [2023-11-29 00:52:20,112 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 185 transitions. [2023-11-29 00:52:20,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 185 transitions. [2023-11-29 00:52:20,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:52:20,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 185 transitions. [2023-11-29 00:52:20,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 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) [2023-11-29 00:52:20,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 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) [2023-11-29 00:52:20,116 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 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) [2023-11-29 00:52:20,116 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 117 flow. Second operand 3 states and 185 transitions. [2023-11-29 00:52:20,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 146 flow [2023-11-29 00:52:20,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 142 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:52:20,119 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 135 flow [2023-11-29 00:52:20,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2023-11-29 00:52:20,120 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -11 predicate places. [2023-11-29 00:52:20,120 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 135 flow [2023-11-29 00:52:20,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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) [2023-11-29 00:52:20,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:20,121 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:52:20,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:52:20,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-29 00:52:20,326 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2023-11-29 00:52:20,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:20,326 INFO L85 PathProgramCache]: Analyzing trace with hash 531800422, now seen corresponding path program 1 times [2023-11-29 00:52:20,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:20,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280221316] [2023-11-29 00:52:20,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:20,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:52:20,342 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 00:52:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:52:20,373 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 00:52:20,374 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 00:52:20,374 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-11-29 00:52:20,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 6 remaining) [2023-11-29 00:52:20,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (3 of 6 remaining) [2023-11-29 00:52:20,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (2 of 6 remaining) [2023-11-29 00:52:20,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 6 remaining) [2023-11-29 00:52:20,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 6 remaining) [2023-11-29 00:52:20,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:52:20,377 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-29 00:52:20,379 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 00:52:20,379 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 00:52:20,399 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 00:52:20,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 80 transitions, 176 flow [2023-11-29 00:52:20,430 INFO L124 PetriNetUnfolderBase]: 16/189 cut-off events. [2023-11-29 00:52:20,431 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 00:52:20,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 189 events. 16/189 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 451 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 112. Up to 8 conditions per place. [2023-11-29 00:52:20,431 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 80 transitions, 176 flow [2023-11-29 00:52:20,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 80 transitions, 176 flow [2023-11-29 00:52:20,434 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:52:20,436 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;@71fb52b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:52:20,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-29 00:52:20,438 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:52:20,439 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-29 00:52:20,439 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:52:20,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:20,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:52:20,439 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-29 00:52:20,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:20,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1303842029, now seen corresponding path program 1 times [2023-11-29 00:52:20,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:20,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331403378] [2023-11-29 00:52:20,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:20,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:20,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:20,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:20,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331403378] [2023-11-29 00:52:20,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331403378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:52:20,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:52:20,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:52:20,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223286968] [2023-11-29 00:52:20,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:52:20,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:52:20,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:20,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:52:20,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:52:20,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 80 [2023-11-29 00:52:20,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 80 transitions, 176 flow. Second operand has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 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) [2023-11-29 00:52:20,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:20,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 80 [2023-11-29 00:52:20,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:20,499 INFO L124 PetriNetUnfolderBase]: 7/199 cut-off events. [2023-11-29 00:52:20,500 INFO L125 PetriNetUnfolderBase]: For 28/37 co-relation queries the response was YES. [2023-11-29 00:52:20,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 199 events. 7/199 cut-off events. For 28/37 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 562 event pairs, 4 based on Foata normal form. 15/192 useless extension candidates. Maximal degree in co-relation 104. Up to 18 conditions per place. [2023-11-29 00:52:20,501 INFO L140 encePairwiseOnDemand]: 73/80 looper letters, 7 selfloop transitions, 0 changer transitions 0/70 dead transitions. [2023-11-29 00:52:20,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 170 flow [2023-11-29 00:52:20,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:52:20,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-29 00:52:20,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 144 transitions. [2023-11-29 00:52:20,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9 [2023-11-29 00:52:20,503 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 144 transitions. [2023-11-29 00:52:20,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 144 transitions. [2023-11-29 00:52:20,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:52:20,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 144 transitions. [2023-11-29 00:52:20,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 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) [2023-11-29 00:52:20,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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) [2023-11-29 00:52:20,506 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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) [2023-11-29 00:52:20,506 INFO L175 Difference]: Start difference. First operand has 79 places, 80 transitions, 176 flow. Second operand 2 states and 144 transitions. [2023-11-29 00:52:20,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 170 flow [2023-11-29 00:52:20,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 70 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:52:20,509 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 156 flow [2023-11-29 00:52:20,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=156, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2023-11-29 00:52:20,510 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -5 predicate places. [2023-11-29 00:52:20,510 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 156 flow [2023-11-29 00:52:20,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 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) [2023-11-29 00:52:20,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:20,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:52:20,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:52:20,511 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-29 00:52:20,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:20,511 INFO L85 PathProgramCache]: Analyzing trace with hash -874257705, now seen corresponding path program 1 times [2023-11-29 00:52:20,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:20,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951725670] [2023-11-29 00:52:20,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:20,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:20,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:20,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:20,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951725670] [2023-11-29 00:52:20,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951725670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:52:20,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:52:20,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:52:20,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399378342] [2023-11-29 00:52:20,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:52:20,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:52:20,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:20,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:52:20,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:52:20,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 80 [2023-11-29 00:52:20,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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) [2023-11-29 00:52:20,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:20,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 80 [2023-11-29 00:52:20,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:20,617 INFO L124 PetriNetUnfolderBase]: 28/290 cut-off events. [2023-11-29 00:52:20,617 INFO L125 PetriNetUnfolderBase]: For 27/30 co-relation queries the response was YES. [2023-11-29 00:52:20,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 290 events. 28/290 cut-off events. For 27/30 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1214 event pairs, 10 based on Foata normal form. 1/267 useless extension candidates. Maximal degree in co-relation 371. Up to 65 conditions per place. [2023-11-29 00:52:20,620 INFO L140 encePairwiseOnDemand]: 77/80 looper letters, 12 selfloop transitions, 2 changer transitions 3/72 dead transitions. [2023-11-29 00:52:20,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 190 flow [2023-11-29 00:52:20,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:52:20,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:52:20,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2023-11-29 00:52:20,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8041666666666667 [2023-11-29 00:52:20,622 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2023-11-29 00:52:20,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2023-11-29 00:52:20,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:52:20,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2023-11-29 00:52:20,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2023-11-29 00:52:20,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2023-11-29 00:52:20,625 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2023-11-29 00:52:20,625 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 156 flow. Second operand 3 states and 193 transitions. [2023-11-29 00:52:20,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 190 flow [2023-11-29 00:52:20,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 72 transitions, 190 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:52:20,628 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 162 flow [2023-11-29 00:52:20,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=77, PETRI_TRANSITIONS=68} [2023-11-29 00:52:20,629 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2023-11-29 00:52:20,629 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 162 flow [2023-11-29 00:52:20,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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) [2023-11-29 00:52:20,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:20,630 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] [2023-11-29 00:52:20,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:52:20,630 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-29 00:52:20,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:20,630 INFO L85 PathProgramCache]: Analyzing trace with hash 2054848402, now seen corresponding path program 1 times [2023-11-29 00:52:20,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:20,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567861100] [2023-11-29 00:52:20,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:20,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:20,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:20,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:20,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:20,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567861100] [2023-11-29 00:52:20,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567861100] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:52:20,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517477232] [2023-11-29 00:52:20,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:20,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:20,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:52:20,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:52:20,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:52:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:20,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:52:20,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:52:20,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:52:20,820 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:52:20,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517477232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:52:20,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:52:20,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-29 00:52:20,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939478314] [2023-11-29 00:52:20,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:52:20,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:52:20,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:20,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:52:20,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:52:20,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 80 [2023-11-29 00:52:20,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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) [2023-11-29 00:52:20,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:20,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 80 [2023-11-29 00:52:20,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:20,910 INFO L124 PetriNetUnfolderBase]: 23/381 cut-off events. [2023-11-29 00:52:20,910 INFO L125 PetriNetUnfolderBase]: For 52/62 co-relation queries the response was YES. [2023-11-29 00:52:20,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 381 events. 23/381 cut-off events. For 52/62 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1938 event pairs, 6 based on Foata normal form. 3/341 useless extension candidates. Maximal degree in co-relation 470. Up to 41 conditions per place. [2023-11-29 00:52:20,913 INFO L140 encePairwiseOnDemand]: 75/80 looper letters, 11 selfloop transitions, 4 changer transitions 0/73 dead transitions. [2023-11-29 00:52:20,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 73 transitions, 208 flow [2023-11-29 00:52:20,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:52:20,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:52:20,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2023-11-29 00:52:20,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8416666666666667 [2023-11-29 00:52:20,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 202 transitions. [2023-11-29 00:52:20,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 202 transitions. [2023-11-29 00:52:20,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:52:20,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 202 transitions. [2023-11-29 00:52:20,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2023-11-29 00:52:20,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2023-11-29 00:52:20,917 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2023-11-29 00:52:20,918 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 162 flow. Second operand 3 states and 202 transitions. [2023-11-29 00:52:20,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 73 transitions, 208 flow [2023-11-29 00:52:20,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 206 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:52:20,921 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 190 flow [2023-11-29 00:52:20,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2023-11-29 00:52:20,922 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2023-11-29 00:52:20,922 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 190 flow [2023-11-29 00:52:20,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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) [2023-11-29 00:52:20,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:20,923 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] [2023-11-29 00:52:20,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:52:21,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:21,128 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-29 00:52:21,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:21,129 INFO L85 PathProgramCache]: Analyzing trace with hash -178159705, now seen corresponding path program 1 times [2023-11-29 00:52:21,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:21,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658152068] [2023-11-29 00:52:21,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:21,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:21,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:21,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:21,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658152068] [2023-11-29 00:52:21,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658152068] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:52:21,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091024613] [2023-11-29 00:52:21,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:21,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:21,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:52:21,204 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:52:21,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:52:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:21,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:52:21,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:52:21,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:21,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:52:21,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:21,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091024613] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:52:21,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:52:21,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 00:52:21,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880744892] [2023-11-29 00:52:21,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:52:21,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:52:21,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:21,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:52:21,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:52:21,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 80 [2023-11-29 00:52:21,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 190 flow. Second operand has 10 states, 10 states have (on average 58.3) internal successors, (583), 10 states have internal predecessors, (583), 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) [2023-11-29 00:52:21,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:21,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 80 [2023-11-29 00:52:21,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:21,516 INFO L124 PetriNetUnfolderBase]: 22/111 cut-off events. [2023-11-29 00:52:21,517 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-29 00:52:21,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 111 events. 22/111 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 296 event pairs, 0 based on Foata normal form. 6/117 useless extension candidates. Maximal degree in co-relation 207. Up to 26 conditions per place. [2023-11-29 00:52:21,518 INFO L140 encePairwiseOnDemand]: 75/80 looper letters, 18 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2023-11-29 00:52:21,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 51 transitions, 190 flow [2023-11-29 00:52:21,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:52:21,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:52:21,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 531 transitions. [2023-11-29 00:52:21,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7375 [2023-11-29 00:52:21,521 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 531 transitions. [2023-11-29 00:52:21,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 531 transitions. [2023-11-29 00:52:21,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:52:21,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 531 transitions. [2023-11-29 00:52:21,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 59.0) internal successors, (531), 9 states have internal predecessors, (531), 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) [2023-11-29 00:52:21,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2023-11-29 00:52:21,526 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2023-11-29 00:52:21,526 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 190 flow. Second operand 9 states and 531 transitions. [2023-11-29 00:52:21,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 51 transitions, 190 flow [2023-11-29 00:52:21,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 190 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:52:21,529 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 114 flow [2023-11-29 00:52:21,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=114, PETRI_PLACES=55, PETRI_TRANSITIONS=40} [2023-11-29 00:52:21,529 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -24 predicate places. [2023-11-29 00:52:21,530 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 114 flow [2023-11-29 00:52:21,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 58.3) internal successors, (583), 10 states have internal predecessors, (583), 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) [2023-11-29 00:52:21,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:21,530 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:52:21,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 00:52:21,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:21,734 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-29 00:52:21,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:21,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1058452712, now seen corresponding path program 1 times [2023-11-29 00:52:21,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:21,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236917655] [2023-11-29 00:52:21,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:21,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:52:21,749 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 00:52:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:52:21,766 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 00:52:21,766 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 00:52:21,766 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-29 00:52:21,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-11-29 00:52:21,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2023-11-29 00:52:21,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-11-29 00:52:21,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-11-29 00:52:21,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-11-29 00:52:21,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-11-29 00:52:21,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 00:52:21,768 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-29 00:52:21,768 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 00:52:21,769 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 00:52:21,786 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 00:52:21,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 88 transitions, 203 flow [2023-11-29 00:52:21,824 INFO L124 PetriNetUnfolderBase]: 28/317 cut-off events. [2023-11-29 00:52:21,824 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-29 00:52:21,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 317 events. 28/317 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 918 event pairs, 1 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 197. Up to 16 conditions per place. [2023-11-29 00:52:21,824 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 88 transitions, 203 flow [2023-11-29 00:52:21,826 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 88 transitions, 203 flow [2023-11-29 00:52:21,827 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:52:21,828 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;@71fb52b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:52:21,828 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-29 00:52:21,830 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:52:21,831 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-29 00:52:21,831 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:52:21,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:21,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:52:21,831 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-29 00:52:21,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:21,832 INFO L85 PathProgramCache]: Analyzing trace with hash 858364397, now seen corresponding path program 1 times [2023-11-29 00:52:21,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:21,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760487244] [2023-11-29 00:52:21,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:21,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:21,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:21,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:21,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760487244] [2023-11-29 00:52:21,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760487244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:52:21,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:52:21,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:52:21,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567279941] [2023-11-29 00:52:21,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:52:21,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:52:21,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:21,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:52:21,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:52:21,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 88 [2023-11-29 00:52:21,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 88 transitions, 203 flow. Second operand has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 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) [2023-11-29 00:52:21,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:21,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 88 [2023-11-29 00:52:21,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:21,924 INFO L124 PetriNetUnfolderBase]: 36/483 cut-off events. [2023-11-29 00:52:21,924 INFO L125 PetriNetUnfolderBase]: For 122/177 co-relation queries the response was YES. [2023-11-29 00:52:21,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 483 events. 36/483 cut-off events. For 122/177 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2251 event pairs, 27 based on Foata normal form. 31/458 useless extension candidates. Maximal degree in co-relation 306. Up to 68 conditions per place. [2023-11-29 00:52:21,927 INFO L140 encePairwiseOnDemand]: 80/88 looper letters, 10 selfloop transitions, 0 changer transitions 0/77 dead transitions. [2023-11-29 00:52:21,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 77 transitions, 201 flow [2023-11-29 00:52:21,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:52:21,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-29 00:52:21,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 156 transitions. [2023-11-29 00:52:21,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8863636363636364 [2023-11-29 00:52:21,928 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 156 transitions. [2023-11-29 00:52:21,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 156 transitions. [2023-11-29 00:52:21,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:52:21,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 156 transitions. [2023-11-29 00:52:21,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 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) [2023-11-29 00:52:21,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2023-11-29 00:52:21,930 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2023-11-29 00:52:21,930 INFO L175 Difference]: Start difference. First operand has 88 places, 88 transitions, 203 flow. Second operand 2 states and 156 transitions. [2023-11-29 00:52:21,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 77 transitions, 201 flow [2023-11-29 00:52:21,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 77 transitions, 201 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:52:21,933 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 181 flow [2023-11-29 00:52:21,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=181, PETRI_PLACES=82, PETRI_TRANSITIONS=77} [2023-11-29 00:52:21,934 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -6 predicate places. [2023-11-29 00:52:21,934 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 181 flow [2023-11-29 00:52:21,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 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) [2023-11-29 00:52:21,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:21,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:52:21,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 00:52:21,935 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-29 00:52:21,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:21,936 INFO L85 PathProgramCache]: Analyzing trace with hash 503504943, now seen corresponding path program 1 times [2023-11-29 00:52:21,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:21,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271269613] [2023-11-29 00:52:21,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:21,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:21,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:21,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:21,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271269613] [2023-11-29 00:52:21,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271269613] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:52:21,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:52:21,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:52:21,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374151844] [2023-11-29 00:52:21,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:52:21,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:52:21,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:21,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:52:21,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:52:21,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 88 [2023-11-29 00:52:21,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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) [2023-11-29 00:52:21,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:21,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 88 [2023-11-29 00:52:21,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:22,058 INFO L124 PetriNetUnfolderBase]: 120/720 cut-off events. [2023-11-29 00:52:22,058 INFO L125 PetriNetUnfolderBase]: For 136/166 co-relation queries the response was YES. [2023-11-29 00:52:22,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1001 conditions, 720 events. 120/720 cut-off events. For 136/166 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 4007 event pairs, 64 based on Foata normal form. 1/653 useless extension candidates. Maximal degree in co-relation 995. Up to 219 conditions per place. [2023-11-29 00:52:22,062 INFO L140 encePairwiseOnDemand]: 85/88 looper letters, 15 selfloop transitions, 2 changer transitions 3/79 dead transitions. [2023-11-29 00:52:22,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 79 transitions, 221 flow [2023-11-29 00:52:22,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:52:22,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:52:22,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2023-11-29 00:52:22,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7878787878787878 [2023-11-29 00:52:22,064 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2023-11-29 00:52:22,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2023-11-29 00:52:22,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:52:22,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2023-11-29 00:52:22,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2023-11-29 00:52:22,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:52:22,066 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:52:22,066 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 181 flow. Second operand 3 states and 208 transitions. [2023-11-29 00:52:22,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 79 transitions, 221 flow [2023-11-29 00:52:22,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 79 transitions, 221 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:52:22,069 INFO L231 Difference]: Finished difference. Result has 85 places, 75 transitions, 187 flow [2023-11-29 00:52:22,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=85, PETRI_TRANSITIONS=75} [2023-11-29 00:52:22,070 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -3 predicate places. [2023-11-29 00:52:22,070 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 75 transitions, 187 flow [2023-11-29 00:52:22,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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) [2023-11-29 00:52:22,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:22,071 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] [2023-11-29 00:52:22,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 00:52:22,071 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-29 00:52:22,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:22,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1668019036, now seen corresponding path program 1 times [2023-11-29 00:52:22,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:22,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340697920] [2023-11-29 00:52:22,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:22,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:22,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:22,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:22,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340697920] [2023-11-29 00:52:22,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340697920] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:52:22,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388381511] [2023-11-29 00:52:22,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:22,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:22,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:52:22,122 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:52:22,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:52:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:22,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:52:22,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:52:22,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:52:22,207 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:52:22,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388381511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:52:22,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:52:22,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-29 00:52:22,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027727374] [2023-11-29 00:52:22,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:52:22,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:52:22,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:22,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:52:22,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:52:22,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 88 [2023-11-29 00:52:22,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 75 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2023-11-29 00:52:22,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:22,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 88 [2023-11-29 00:52:22,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:22,361 INFO L124 PetriNetUnfolderBase]: 123/1129 cut-off events. [2023-11-29 00:52:22,361 INFO L125 PetriNetUnfolderBase]: For 222/279 co-relation queries the response was YES. [2023-11-29 00:52:22,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 1129 events. 123/1129 cut-off events. For 222/279 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 8069 event pairs, 40 based on Foata normal form. 6/1003 useless extension candidates. Maximal degree in co-relation 1451. Up to 166 conditions per place. [2023-11-29 00:52:22,366 INFO L140 encePairwiseOnDemand]: 82/88 looper letters, 15 selfloop transitions, 5 changer transitions 0/82 dead transitions. [2023-11-29 00:52:22,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 250 flow [2023-11-29 00:52:22,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:52:22,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:52:22,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2023-11-29 00:52:22,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8295454545454546 [2023-11-29 00:52:22,368 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 219 transitions. [2023-11-29 00:52:22,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 219 transitions. [2023-11-29 00:52:22,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:52:22,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 219 transitions. [2023-11-29 00:52:22,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2023-11-29 00:52:22,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:52:22,370 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:52:22,370 INFO L175 Difference]: Start difference. First operand has 85 places, 75 transitions, 187 flow. Second operand 3 states and 219 transitions. [2023-11-29 00:52:22,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 250 flow [2023-11-29 00:52:22,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 82 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:52:22,373 INFO L231 Difference]: Finished difference. Result has 85 places, 79 transitions, 223 flow [2023-11-29 00:52:22,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2023-11-29 00:52:22,374 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -3 predicate places. [2023-11-29 00:52:22,374 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 79 transitions, 223 flow [2023-11-29 00:52:22,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2023-11-29 00:52:22,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:22,375 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] [2023-11-29 00:52:22,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:52:22,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:22,575 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-29 00:52:22,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:22,576 INFO L85 PathProgramCache]: Analyzing trace with hash 818936225, now seen corresponding path program 1 times [2023-11-29 00:52:22,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:22,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919299230] [2023-11-29 00:52:22,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:22,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:22,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:22,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:22,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919299230] [2023-11-29 00:52:22,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919299230] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:52:22,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953380493] [2023-11-29 00:52:22,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:22,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:22,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:52:22,635 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:52:22,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:52:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:22,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:52:22,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:52:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:22,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:52:22,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:22,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953380493] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:52:22,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:52:22,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 00:52:22,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044544556] [2023-11-29 00:52:22,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:52:22,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:52:22,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:22,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:52:22,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:52:22,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 88 [2023-11-29 00:52:22,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 79 transitions, 223 flow. Second operand has 10 states, 10 states have (on average 62.3) internal successors, (623), 10 states have internal predecessors, (623), 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) [2023-11-29 00:52:22,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:22,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 88 [2023-11-29 00:52:22,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:23,072 INFO L124 PetriNetUnfolderBase]: 192/1240 cut-off events. [2023-11-29 00:52:23,072 INFO L125 PetriNetUnfolderBase]: For 450/473 co-relation queries the response was YES. [2023-11-29 00:52:23,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1951 conditions, 1240 events. 192/1240 cut-off events. For 450/473 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 8382 event pairs, 30 based on Foata normal form. 6/1151 useless extension candidates. Maximal degree in co-relation 1942. Up to 218 conditions per place. [2023-11-29 00:52:23,081 INFO L140 encePairwiseOnDemand]: 82/88 looper letters, 33 selfloop transitions, 9 changer transitions 0/99 dead transitions. [2023-11-29 00:52:23,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 99 transitions, 373 flow [2023-11-29 00:52:23,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:52:23,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:52:23,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 581 transitions. [2023-11-29 00:52:23,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7335858585858586 [2023-11-29 00:52:23,084 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 581 transitions. [2023-11-29 00:52:23,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 581 transitions. [2023-11-29 00:52:23,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:52:23,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 581 transitions. [2023-11-29 00:52:23,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 64.55555555555556) internal successors, (581), 9 states have internal predecessors, (581), 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) [2023-11-29 00:52:23,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 88.0) internal successors, (880), 10 states have internal predecessors, (880), 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) [2023-11-29 00:52:23,090 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 88.0) internal successors, (880), 10 states have internal predecessors, (880), 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) [2023-11-29 00:52:23,090 INFO L175 Difference]: Start difference. First operand has 85 places, 79 transitions, 223 flow. Second operand 9 states and 581 transitions. [2023-11-29 00:52:23,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 99 transitions, 373 flow [2023-11-29 00:52:23,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 99 transitions, 363 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:52:23,118 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 263 flow [2023-11-29 00:52:23,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=263, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2023-11-29 00:52:23,119 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 6 predicate places. [2023-11-29 00:52:23,119 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 263 flow [2023-11-29 00:52:23,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 62.3) internal successors, (623), 10 states have internal predecessors, (623), 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) [2023-11-29 00:52:23,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:23,120 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:52:23,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:52:23,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:23,320 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-29 00:52:23,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:23,320 INFO L85 PathProgramCache]: Analyzing trace with hash 318234519, now seen corresponding path program 1 times [2023-11-29 00:52:23,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:23,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915151473] [2023-11-29 00:52:23,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:23,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:52:23,338 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 00:52:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:52:23,357 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 00:52:23,358 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 00:52:23,358 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2023-11-29 00:52:23,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2023-11-29 00:52:23,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2023-11-29 00:52:23,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2023-11-29 00:52:23,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2023-11-29 00:52:23,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2023-11-29 00:52:23,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2023-11-29 00:52:23,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2023-11-29 00:52:23,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 00:52:23,359 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-29 00:52:23,360 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 00:52:23,360 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-29 00:52:23,380 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-29 00:52:23,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 96 transitions, 232 flow [2023-11-29 00:52:23,438 INFO L124 PetriNetUnfolderBase]: 52/545 cut-off events. [2023-11-29 00:52:23,438 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-29 00:52:23,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 596 conditions, 545 events. 52/545 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2029 event pairs, 6 based on Foata normal form. 0/467 useless extension candidates. Maximal degree in co-relation 337. Up to 32 conditions per place. [2023-11-29 00:52:23,439 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 96 transitions, 232 flow [2023-11-29 00:52:23,442 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 96 transitions, 232 flow [2023-11-29 00:52:23,443 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:52:23,444 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;@71fb52b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:52:23,444 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-29 00:52:23,445 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:52:23,445 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-29 00:52:23,445 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:52:23,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:23,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:52:23,446 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 00:52:23,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:23,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1189417491, now seen corresponding path program 1 times [2023-11-29 00:52:23,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:23,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032301639] [2023-11-29 00:52:23,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:23,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:23,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:23,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:23,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032301639] [2023-11-29 00:52:23,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032301639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:52:23,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:52:23,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:52:23,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036657836] [2023-11-29 00:52:23,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:52:23,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:52:23,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:23,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:52:23,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:52:23,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 96 [2023-11-29 00:52:23,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 96 transitions, 232 flow. Second operand has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 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) [2023-11-29 00:52:23,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:23,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 96 [2023-11-29 00:52:23,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:23,638 INFO L124 PetriNetUnfolderBase]: 157/1321 cut-off events. [2023-11-29 00:52:23,639 INFO L125 PetriNetUnfolderBase]: For 464/749 co-relation queries the response was YES. [2023-11-29 00:52:23,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1748 conditions, 1321 events. 157/1321 cut-off events. For 464/749 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 9023 event pairs, 128 based on Foata normal form. 77/1239 useless extension candidates. Maximal degree in co-relation 968. Up to 250 conditions per place. [2023-11-29 00:52:23,648 INFO L140 encePairwiseOnDemand]: 87/96 looper letters, 13 selfloop transitions, 0 changer transitions 0/84 dead transitions. [2023-11-29 00:52:23,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 84 transitions, 234 flow [2023-11-29 00:52:23,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:52:23,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-29 00:52:23,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 168 transitions. [2023-11-29 00:52:23,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.875 [2023-11-29 00:52:23,650 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 168 transitions. [2023-11-29 00:52:23,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 168 transitions. [2023-11-29 00:52:23,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:52:23,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 168 transitions. [2023-11-29 00:52:23,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 84.0) internal successors, (168), 2 states have internal predecessors, (168), 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) [2023-11-29 00:52:23,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2023-11-29 00:52:23,652 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2023-11-29 00:52:23,652 INFO L175 Difference]: Start difference. First operand has 97 places, 96 transitions, 232 flow. Second operand 2 states and 168 transitions. [2023-11-29 00:52:23,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 84 transitions, 234 flow [2023-11-29 00:52:23,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 84 transitions, 234 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:52:23,655 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 208 flow [2023-11-29 00:52:23,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=208, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2023-11-29 00:52:23,656 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -7 predicate places. [2023-11-29 00:52:23,656 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 208 flow [2023-11-29 00:52:23,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 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) [2023-11-29 00:52:23,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:23,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:52:23,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 00:52:23,656 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 00:52:23,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:23,657 INFO L85 PathProgramCache]: Analyzing trace with hash 54260879, now seen corresponding path program 1 times [2023-11-29 00:52:23,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:23,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682665374] [2023-11-29 00:52:23,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:23,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:23,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:23,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:23,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682665374] [2023-11-29 00:52:23,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682665374] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:52:23,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:52:23,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:52:23,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940972647] [2023-11-29 00:52:23,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:52:23,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:52:23,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:23,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:52:23,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:52:23,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 96 [2023-11-29 00:52:23,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2023-11-29 00:52:23,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:23,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 96 [2023-11-29 00:52:23,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:23,877 INFO L124 PetriNetUnfolderBase]: 436/1882 cut-off events. [2023-11-29 00:52:23,877 INFO L125 PetriNetUnfolderBase]: For 510/691 co-relation queries the response was YES. [2023-11-29 00:52:23,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2774 conditions, 1882 events. 436/1882 cut-off events. For 510/691 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 13239 event pairs, 278 based on Foata normal form. 1/1679 useless extension candidates. Maximal degree in co-relation 2767. Up to 697 conditions per place. [2023-11-29 00:52:23,886 INFO L140 encePairwiseOnDemand]: 93/96 looper letters, 18 selfloop transitions, 2 changer transitions 3/86 dead transitions. [2023-11-29 00:52:23,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 86 transitions, 254 flow [2023-11-29 00:52:23,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:52:23,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:52:23,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2023-11-29 00:52:23,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7743055555555556 [2023-11-29 00:52:23,888 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2023-11-29 00:52:23,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2023-11-29 00:52:23,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:52:23,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2023-11-29 00:52:23,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2023-11-29 00:52:23,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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) [2023-11-29 00:52:23,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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) [2023-11-29 00:52:23,890 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 208 flow. Second operand 3 states and 223 transitions. [2023-11-29 00:52:23,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 86 transitions, 254 flow [2023-11-29 00:52:23,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 86 transitions, 254 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:52:23,892 INFO L231 Difference]: Finished difference. Result has 93 places, 82 transitions, 214 flow [2023-11-29 00:52:23,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=93, PETRI_TRANSITIONS=82} [2023-11-29 00:52:23,893 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -4 predicate places. [2023-11-29 00:52:23,893 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 82 transitions, 214 flow [2023-11-29 00:52:23,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2023-11-29 00:52:23,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:23,894 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] [2023-11-29 00:52:23,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 00:52:23,894 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 00:52:23,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:23,894 INFO L85 PathProgramCache]: Analyzing trace with hash 625085374, now seen corresponding path program 1 times [2023-11-29 00:52:23,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:23,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181772962] [2023-11-29 00:52:23,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:23,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:23,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:23,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:23,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181772962] [2023-11-29 00:52:23,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181772962] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:52:23,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733627647] [2023-11-29 00:52:23,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:23,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:23,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:52:23,942 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:52:23,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:52:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:24,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:52:24,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:52:24,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:52:24,025 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:52:24,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733627647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:52:24,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:52:24,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-29 00:52:24,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632961096] [2023-11-29 00:52:24,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:52:24,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:52:24,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:24,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:52:24,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:52:24,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 96 [2023-11-29 00:52:24,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 82 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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) [2023-11-29 00:52:24,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:24,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 96 [2023-11-29 00:52:24,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:24,471 INFO L124 PetriNetUnfolderBase]: 492/3338 cut-off events. [2023-11-29 00:52:24,471 INFO L125 PetriNetUnfolderBase]: For 872/1113 co-relation queries the response was YES. [2023-11-29 00:52:24,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4431 conditions, 3338 events. 492/3338 cut-off events. For 872/1113 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 30421 event pairs, 183 based on Foata normal form. 10/2968 useless extension candidates. Maximal degree in co-relation 4422. Up to 584 conditions per place. [2023-11-29 00:52:24,493 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 19 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2023-11-29 00:52:24,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 91 transitions, 294 flow [2023-11-29 00:52:24,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:52:24,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:52:24,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-11-29 00:52:24,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8194444444444444 [2023-11-29 00:52:24,495 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-11-29 00:52:24,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-11-29 00:52:24,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:52:24,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-11-29 00:52:24,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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) [2023-11-29 00:52:24,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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) [2023-11-29 00:52:24,497 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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) [2023-11-29 00:52:24,497 INFO L175 Difference]: Start difference. First operand has 93 places, 82 transitions, 214 flow. Second operand 3 states and 236 transitions. [2023-11-29 00:52:24,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 91 transitions, 294 flow [2023-11-29 00:52:24,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 91 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:52:24,501 INFO L231 Difference]: Finished difference. Result has 93 places, 87 transitions, 258 flow [2023-11-29 00:52:24,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=93, PETRI_TRANSITIONS=87} [2023-11-29 00:52:24,502 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -4 predicate places. [2023-11-29 00:52:24,502 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 87 transitions, 258 flow [2023-11-29 00:52:24,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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) [2023-11-29 00:52:24,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:24,502 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] [2023-11-29 00:52:24,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:52:24,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:24,703 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 00:52:24,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:24,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1057485011, now seen corresponding path program 1 times [2023-11-29 00:52:24,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:24,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555731975] [2023-11-29 00:52:24,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:24,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:24,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:24,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:24,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555731975] [2023-11-29 00:52:24,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555731975] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:52:24,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894961875] [2023-11-29 00:52:24,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:24,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:24,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:52:24,758 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:52:24,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:52:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:24,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:52:24,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:52:24,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:24,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:52:24,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:24,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894961875] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:52:24,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:52:24,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 00:52:24,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568859136] [2023-11-29 00:52:24,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:52:24,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:52:24,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:24,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:52:24,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:52:24,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 96 [2023-11-29 00:52:24,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 87 transitions, 258 flow. Second operand has 10 states, 10 states have (on average 66.3) internal successors, (663), 10 states have internal predecessors, (663), 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) [2023-11-29 00:52:24,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:24,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 96 [2023-11-29 00:52:24,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:25,386 INFO L124 PetriNetUnfolderBase]: 753/3686 cut-off events. [2023-11-29 00:52:25,386 INFO L125 PetriNetUnfolderBase]: For 1681/1780 co-relation queries the response was YES. [2023-11-29 00:52:25,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6128 conditions, 3686 events. 753/3686 cut-off events. For 1681/1780 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 32518 event pairs, 127 based on Foata normal form. 6/3397 useless extension candidates. Maximal degree in co-relation 6118. Up to 854 conditions per place. [2023-11-29 00:52:25,408 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 38 selfloop transitions, 9 changer transitions 0/108 dead transitions. [2023-11-29 00:52:25,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 108 transitions, 422 flow [2023-11-29 00:52:25,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:52:25,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:52:25,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 621 transitions. [2023-11-29 00:52:25,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.71875 [2023-11-29 00:52:25,410 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 621 transitions. [2023-11-29 00:52:25,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 621 transitions. [2023-11-29 00:52:25,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:52:25,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 621 transitions. [2023-11-29 00:52:25,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 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) [2023-11-29 00:52:25,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 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) [2023-11-29 00:52:25,458 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 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) [2023-11-29 00:52:25,458 INFO L175 Difference]: Start difference. First operand has 93 places, 87 transitions, 258 flow. Second operand 9 states and 621 transitions. [2023-11-29 00:52:25,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 108 transitions, 422 flow [2023-11-29 00:52:25,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 108 transitions, 410 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:52:25,463 INFO L231 Difference]: Finished difference. Result has 102 places, 93 transitions, 296 flow [2023-11-29 00:52:25,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=296, PETRI_PLACES=102, PETRI_TRANSITIONS=93} [2023-11-29 00:52:25,463 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 5 predicate places. [2023-11-29 00:52:25,463 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 93 transitions, 296 flow [2023-11-29 00:52:25,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 66.3) internal successors, (663), 10 states have internal predecessors, (663), 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) [2023-11-29 00:52:25,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:25,464 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:52:25,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:52:25,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:25,669 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 00:52:25,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:25,670 INFO L85 PathProgramCache]: Analyzing trace with hash -2078783854, now seen corresponding path program 1 times [2023-11-29 00:52:25,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:25,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454782656] [2023-11-29 00:52:25,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:25,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:25,811 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:25,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:25,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454782656] [2023-11-29 00:52:25,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454782656] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:52:25,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694339851] [2023-11-29 00:52:25,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:25,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:25,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:52:25,813 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:52:25,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:52:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:25,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:52:25,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:52:25,967 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:25,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:52:26,061 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:26,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694339851] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:52:26,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:52:26,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2023-11-29 00:52:26,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052096967] [2023-11-29 00:52:26,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:52:26,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 00:52:26,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:26,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 00:52:26,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:52:26,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 96 [2023-11-29 00:52:26,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 93 transitions, 296 flow. Second operand has 13 states, 13 states have (on average 66.6923076923077) internal successors, (867), 13 states have internal predecessors, (867), 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) [2023-11-29 00:52:26,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:26,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 96 [2023-11-29 00:52:26,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:26,281 INFO L124 PetriNetUnfolderBase]: 230/595 cut-off events. [2023-11-29 00:52:26,281 INFO L125 PetriNetUnfolderBase]: For 562/562 co-relation queries the response was YES. [2023-11-29 00:52:26,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 595 events. 230/595 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2949 event pairs, 0 based on Foata normal form. 24/619 useless extension candidates. Maximal degree in co-relation 1494. Up to 246 conditions per place. [2023-11-29 00:52:26,285 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 45 selfloop transitions, 13 changer transitions 0/92 dead transitions. [2023-11-29 00:52:26,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 92 transitions, 454 flow [2023-11-29 00:52:26,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:52:26,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 00:52:26,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1020 transitions. [2023-11-29 00:52:26,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2023-11-29 00:52:26,291 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1020 transitions. [2023-11-29 00:52:26,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1020 transitions. [2023-11-29 00:52:26,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:52:26,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1020 transitions. [2023-11-29 00:52:26,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 68.0) internal successors, (1020), 15 states have internal predecessors, (1020), 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) [2023-11-29 00:52:26,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 96.0) internal successors, (1536), 16 states have internal predecessors, (1536), 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) [2023-11-29 00:52:26,298 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 96.0) internal successors, (1536), 16 states have internal predecessors, (1536), 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) [2023-11-29 00:52:26,298 INFO L175 Difference]: Start difference. First operand has 102 places, 93 transitions, 296 flow. Second operand 15 states and 1020 transitions. [2023-11-29 00:52:26,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 92 transitions, 454 flow [2023-11-29 00:52:26,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 92 transitions, 431 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-29 00:52:26,302 INFO L231 Difference]: Finished difference. Result has 83 places, 59 transitions, 208 flow [2023-11-29 00:52:26,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=208, PETRI_PLACES=83, PETRI_TRANSITIONS=59} [2023-11-29 00:52:26,302 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -14 predicate places. [2023-11-29 00:52:26,302 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 59 transitions, 208 flow [2023-11-29 00:52:26,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 66.6923076923077) internal successors, (867), 13 states have internal predecessors, (867), 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) [2023-11-29 00:52:26,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:26,303 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:52:26,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 00:52:26,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:26,504 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 00:52:26,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:26,504 INFO L85 PathProgramCache]: Analyzing trace with hash -178986461, now seen corresponding path program 1 times [2023-11-29 00:52:26,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:26,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292886825] [2023-11-29 00:52:26,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:26,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:52:26,519 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 00:52:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:52:26,535 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 00:52:26,535 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 00:52:26,535 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-29 00:52:26,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2023-11-29 00:52:26,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2023-11-29 00:52:26,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2023-11-29 00:52:26,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2023-11-29 00:52:26,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2023-11-29 00:52:26,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2023-11-29 00:52:26,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2023-11-29 00:52:26,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2023-11-29 00:52:26,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 00:52:26,537 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-29 00:52:26,537 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 00:52:26,537 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-29 00:52:26,557 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-11-29 00:52:26,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 104 transitions, 263 flow [2023-11-29 00:52:26,664 INFO L124 PetriNetUnfolderBase]: 104/977 cut-off events. [2023-11-29 00:52:26,665 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-11-29 00:52:26,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1083 conditions, 977 events. 104/977 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4694 event pairs, 23 based on Foata normal form. 0/845 useless extension candidates. Maximal degree in co-relation 590. Up to 80 conditions per place. [2023-11-29 00:52:26,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 104 transitions, 263 flow [2023-11-29 00:52:26,671 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 104 transitions, 263 flow [2023-11-29 00:52:26,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:52:26,673 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;@71fb52b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:52:26,673 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-29 00:52:26,674 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:52:26,674 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-29 00:52:26,674 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:52:26,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:26,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:52:26,675 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-29 00:52:26,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:26,675 INFO L85 PathProgramCache]: Analyzing trace with hash -544536339, now seen corresponding path program 1 times [2023-11-29 00:52:26,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:26,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628353862] [2023-11-29 00:52:26,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:26,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:26,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:26,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628353862] [2023-11-29 00:52:26,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628353862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:52:26,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:52:26,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:52:26,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525275682] [2023-11-29 00:52:26,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:52:26,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:52:26,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:26,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:52:26,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:52:26,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 104 [2023-11-29 00:52:26,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 104 transitions, 263 flow. Second operand has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 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) [2023-11-29 00:52:26,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:26,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 104 [2023-11-29 00:52:26,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:27,167 INFO L124 PetriNetUnfolderBase]: 622/3877 cut-off events. [2023-11-29 00:52:27,167 INFO L125 PetriNetUnfolderBase]: For 1681/3018 co-relation queries the response was YES. [2023-11-29 00:52:27,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5340 conditions, 3877 events. 622/3877 cut-off events. For 1681/3018 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 35288 event pairs, 527 based on Foata normal form. 219/3616 useless extension candidates. Maximal degree in co-relation 3130. Up to 892 conditions per place. [2023-11-29 00:52:27,186 INFO L140 encePairwiseOnDemand]: 94/104 looper letters, 16 selfloop transitions, 0 changer transitions 0/91 dead transitions. [2023-11-29 00:52:27,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 91 transitions, 269 flow [2023-11-29 00:52:27,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:52:27,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-29 00:52:27,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 180 transitions. [2023-11-29 00:52:27,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8653846153846154 [2023-11-29 00:52:27,188 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 180 transitions. [2023-11-29 00:52:27,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 180 transitions. [2023-11-29 00:52:27,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:52:27,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 180 transitions. [2023-11-29 00:52:27,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 90.0) internal successors, (180), 2 states have internal predecessors, (180), 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) [2023-11-29 00:52:27,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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) [2023-11-29 00:52:27,189 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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) [2023-11-29 00:52:27,190 INFO L175 Difference]: Start difference. First operand has 106 places, 104 transitions, 263 flow. Second operand 2 states and 180 transitions. [2023-11-29 00:52:27,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 91 transitions, 269 flow [2023-11-29 00:52:27,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 91 transitions, 269 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:52:27,193 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 237 flow [2023-11-29 00:52:27,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=237, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2023-11-29 00:52:27,194 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, -8 predicate places. [2023-11-29 00:52:27,194 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 237 flow [2023-11-29 00:52:27,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 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) [2023-11-29 00:52:27,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:27,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:52:27,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 00:52:27,195 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-29 00:52:27,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:27,196 INFO L85 PathProgramCache]: Analyzing trace with hash 2072977399, now seen corresponding path program 1 times [2023-11-29 00:52:27,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:27,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025332980] [2023-11-29 00:52:27,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:27,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:27,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:27,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:27,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025332980] [2023-11-29 00:52:27,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025332980] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:52:27,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:52:27,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:52:27,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889613940] [2023-11-29 00:52:27,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:52:27,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:52:27,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:27,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:52:27,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:52:27,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 104 [2023-11-29 00:52:27,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 237 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2023-11-29 00:52:27,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:27,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 104 [2023-11-29 00:52:27,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:27,858 INFO L124 PetriNetUnfolderBase]: 1484/5152 cut-off events. [2023-11-29 00:52:27,858 INFO L125 PetriNetUnfolderBase]: For 1875/2686 co-relation queries the response was YES. [2023-11-29 00:52:27,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7951 conditions, 5152 events. 1484/5152 cut-off events. For 1875/2686 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 43984 event pairs, 1050 based on Foata normal form. 1/4538 useless extension candidates. Maximal degree in co-relation 7943. Up to 2179 conditions per place. [2023-11-29 00:52:27,881 INFO L140 encePairwiseOnDemand]: 101/104 looper letters, 21 selfloop transitions, 2 changer transitions 3/93 dead transitions. [2023-11-29 00:52:27,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 93 transitions, 289 flow [2023-11-29 00:52:27,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:52:27,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:52:27,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2023-11-29 00:52:27,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7628205128205128 [2023-11-29 00:52:27,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 238 transitions. [2023-11-29 00:52:27,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 238 transitions. [2023-11-29 00:52:27,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:52:27,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 238 transitions. [2023-11-29 00:52:27,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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) [2023-11-29 00:52:27,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 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) [2023-11-29 00:52:27,886 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 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) [2023-11-29 00:52:27,886 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 237 flow. Second operand 3 states and 238 transitions. [2023-11-29 00:52:27,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 93 transitions, 289 flow [2023-11-29 00:52:27,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 93 transitions, 289 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:52:27,891 INFO L231 Difference]: Finished difference. Result has 101 places, 89 transitions, 243 flow [2023-11-29 00:52:27,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=101, PETRI_TRANSITIONS=89} [2023-11-29 00:52:27,891 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, -5 predicate places. [2023-11-29 00:52:27,892 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 243 flow [2023-11-29 00:52:27,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2023-11-29 00:52:27,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:27,892 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] [2023-11-29 00:52:27,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 00:52:27,892 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-29 00:52:27,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:27,893 INFO L85 PathProgramCache]: Analyzing trace with hash 344227040, now seen corresponding path program 1 times [2023-11-29 00:52:27,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:27,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409302685] [2023-11-29 00:52:27,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:27,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:27,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:27,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:27,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409302685] [2023-11-29 00:52:27,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409302685] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:52:27,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737460850] [2023-11-29 00:52:27,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:27,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:27,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:52:27,945 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:52:27,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:52:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:28,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:52:28,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:52:28,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:52:28,041 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:52:28,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737460850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:52:28,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:52:28,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-29 00:52:28,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250144242] [2023-11-29 00:52:28,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:52:28,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:52:28,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:28,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:52:28,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:52:28,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 104 [2023-11-29 00:52:28,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 89 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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) [2023-11-29 00:52:28,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:28,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 104 [2023-11-29 00:52:28,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:29,037 INFO L124 PetriNetUnfolderBase]: 1758/9912 cut-off events. [2023-11-29 00:52:29,038 INFO L125 PetriNetUnfolderBase]: For 3023/3893 co-relation queries the response was YES. [2023-11-29 00:52:29,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13461 conditions, 9912 events. 1758/9912 cut-off events. For 3023/3893 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 109655 event pairs, 725 based on Foata normal form. 15/8844 useless extension candidates. Maximal degree in co-relation 13451. Up to 1923 conditions per place. [2023-11-29 00:52:29,076 INFO L140 encePairwiseOnDemand]: 96/104 looper letters, 23 selfloop transitions, 7 changer transitions 0/100 dead transitions. [2023-11-29 00:52:29,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 100 transitions, 340 flow [2023-11-29 00:52:29,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:52:29,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:52:29,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2023-11-29 00:52:29,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8108974358974359 [2023-11-29 00:52:29,078 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2023-11-29 00:52:29,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2023-11-29 00:52:29,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:52:29,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2023-11-29 00:52:29,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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) [2023-11-29 00:52:29,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 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) [2023-11-29 00:52:29,080 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 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) [2023-11-29 00:52:29,080 INFO L175 Difference]: Start difference. First operand has 101 places, 89 transitions, 243 flow. Second operand 3 states and 253 transitions. [2023-11-29 00:52:29,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 100 transitions, 340 flow [2023-11-29 00:52:29,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 100 transitions, 338 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:52:29,084 INFO L231 Difference]: Finished difference. Result has 101 places, 95 transitions, 295 flow [2023-11-29 00:52:29,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=101, PETRI_TRANSITIONS=95} [2023-11-29 00:52:29,085 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, -5 predicate places. [2023-11-29 00:52:29,085 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 95 transitions, 295 flow [2023-11-29 00:52:29,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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) [2023-11-29 00:52:29,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:29,086 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] [2023-11-29 00:52:29,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 00:52:29,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 00:52:29,287 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-29 00:52:29,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:29,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1511902023, now seen corresponding path program 1 times [2023-11-29 00:52:29,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:29,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964926291] [2023-11-29 00:52:29,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:29,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:29,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:29,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:29,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964926291] [2023-11-29 00:52:29,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964926291] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:52:29,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709498254] [2023-11-29 00:52:29,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:29,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:29,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:52:29,340 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:52:29,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:52:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:29,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:52:29,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:52:29,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:29,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:52:29,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:29,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709498254] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:52:29,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:52:29,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 00:52:29,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77608088] [2023-11-29 00:52:29,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:52:29,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:52:29,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:29,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:52:29,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:52:29,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 104 [2023-11-29 00:52:29,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 95 transitions, 295 flow. Second operand has 10 states, 10 states have (on average 70.3) internal successors, (703), 10 states have internal predecessors, (703), 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) [2023-11-29 00:52:29,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:29,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 104 [2023-11-29 00:52:29,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:30,738 INFO L124 PetriNetUnfolderBase]: 2499/10613 cut-off events. [2023-11-29 00:52:30,738 INFO L125 PetriNetUnfolderBase]: For 5720/6056 co-relation queries the response was YES. [2023-11-29 00:52:30,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18160 conditions, 10613 events. 2499/10613 cut-off events. For 5720/6056 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 111138 event pairs, 517 based on Foata normal form. 6/9714 useless extension candidates. Maximal degree in co-relation 18149. Up to 2811 conditions per place. [2023-11-29 00:52:30,791 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 43 selfloop transitions, 9 changer transitions 0/117 dead transitions. [2023-11-29 00:52:30,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 117 transitions, 473 flow [2023-11-29 00:52:30,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:52:30,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:52:30,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 661 transitions. [2023-11-29 00:52:30,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7061965811965812 [2023-11-29 00:52:30,794 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 661 transitions. [2023-11-29 00:52:30,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 661 transitions. [2023-11-29 00:52:30,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:52:30,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 661 transitions. [2023-11-29 00:52:30,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.44444444444444) internal successors, (661), 9 states have internal predecessors, (661), 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) [2023-11-29 00:52:30,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 104.0) internal successors, (1040), 10 states have internal predecessors, (1040), 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) [2023-11-29 00:52:30,799 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 104.0) internal successors, (1040), 10 states have internal predecessors, (1040), 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) [2023-11-29 00:52:30,799 INFO L175 Difference]: Start difference. First operand has 101 places, 95 transitions, 295 flow. Second operand 9 states and 661 transitions. [2023-11-29 00:52:30,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 117 transitions, 473 flow [2023-11-29 00:52:30,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 117 transitions, 459 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:52:30,807 INFO L231 Difference]: Finished difference. Result has 110 places, 101 transitions, 331 flow [2023-11-29 00:52:30,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=331, PETRI_PLACES=110, PETRI_TRANSITIONS=101} [2023-11-29 00:52:30,808 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 4 predicate places. [2023-11-29 00:52:30,808 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 101 transitions, 331 flow [2023-11-29 00:52:30,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 70.3) internal successors, (703), 10 states have internal predecessors, (703), 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) [2023-11-29 00:52:30,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:30,809 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:52:30,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 00:52:31,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 00:52:31,016 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-29 00:52:31,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:31,017 INFO L85 PathProgramCache]: Analyzing trace with hash -2117816918, now seen corresponding path program 1 times [2023-11-29 00:52:31,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:31,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118358916] [2023-11-29 00:52:31,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:31,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:31,122 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:31,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:31,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118358916] [2023-11-29 00:52:31,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118358916] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:52:31,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572597950] [2023-11-29 00:52:31,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:31,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:31,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:52:31,124 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:52:31,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 00:52:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:31,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:52:31,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:52:31,277 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:31,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:52:31,362 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:31,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572597950] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:52:31,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:52:31,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2023-11-29 00:52:31,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401869156] [2023-11-29 00:52:31,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:52:31,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 00:52:31,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:31,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 00:52:31,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:52:31,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 104 [2023-11-29 00:52:31,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 101 transitions, 331 flow. Second operand has 13 states, 13 states have (on average 70.6923076923077) internal successors, (919), 13 states have internal predecessors, (919), 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) [2023-11-29 00:52:31,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:31,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 104 [2023-11-29 00:52:31,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:32,817 INFO L124 PetriNetUnfolderBase]: 2166/10462 cut-off events. [2023-11-29 00:52:32,818 INFO L125 PetriNetUnfolderBase]: For 5104/5341 co-relation queries the response was YES. [2023-11-29 00:52:32,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16934 conditions, 10462 events. 2166/10462 cut-off events. For 5104/5341 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 111688 event pairs, 510 based on Foata normal form. 24/9553 useless extension candidates. Maximal degree in co-relation 16921. Up to 2296 conditions per place. [2023-11-29 00:52:32,856 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 66 selfloop transitions, 15 changer transitions 0/146 dead transitions. [2023-11-29 00:52:32,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 146 transitions, 685 flow [2023-11-29 00:52:32,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:52:32,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 00:52:32,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1098 transitions. [2023-11-29 00:52:32,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7038461538461539 [2023-11-29 00:52:32,861 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1098 transitions. [2023-11-29 00:52:32,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1098 transitions. [2023-11-29 00:52:32,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:52:32,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1098 transitions. [2023-11-29 00:52:32,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 73.2) internal successors, (1098), 15 states have internal predecessors, (1098), 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) [2023-11-29 00:52:32,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 104.0) internal successors, (1664), 16 states have internal predecessors, (1664), 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) [2023-11-29 00:52:32,868 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 104.0) internal successors, (1664), 16 states have internal predecessors, (1664), 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) [2023-11-29 00:52:32,868 INFO L175 Difference]: Start difference. First operand has 110 places, 101 transitions, 331 flow. Second operand 15 states and 1098 transitions. [2023-11-29 00:52:32,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 146 transitions, 685 flow [2023-11-29 00:52:32,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 146 transitions, 675 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-29 00:52:32,873 INFO L231 Difference]: Finished difference. Result has 126 places, 108 transitions, 407 flow [2023-11-29 00:52:32,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=407, PETRI_PLACES=126, PETRI_TRANSITIONS=108} [2023-11-29 00:52:32,874 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 20 predicate places. [2023-11-29 00:52:32,874 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 108 transitions, 407 flow [2023-11-29 00:52:32,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 70.6923076923077) internal successors, (919), 13 states have internal predecessors, (919), 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) [2023-11-29 00:52:32,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:32,875 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:52:32,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 00:52:33,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 00:52:33,075 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-29 00:52:33,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:33,076 INFO L85 PathProgramCache]: Analyzing trace with hash -587569668, now seen corresponding path program 1 times [2023-11-29 00:52:33,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:33,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668595210] [2023-11-29 00:52:33,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:33,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:33,267 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 88 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:33,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:52:33,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668595210] [2023-11-29 00:52:33,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668595210] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:52:33,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946305204] [2023-11-29 00:52:33,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:33,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:52:33,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:52:33,269 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:52:33,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 00:52:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:52:33,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:52:33,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:52:33,470 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:52:33,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:52:33,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946305204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:52:33,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:52:33,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2023-11-29 00:52:33,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341993592] [2023-11-29 00:52:33,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:52:33,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 00:52:33,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:52:33,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 00:52:33,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:52:33,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 104 [2023-11-29 00:52:33,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 108 transitions, 407 flow. Second operand has 13 states, 13 states have (on average 70.23076923076923) internal successors, (913), 13 states have internal predecessors, (913), 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) [2023-11-29 00:52:33,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:33,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 104 [2023-11-29 00:52:33,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:34,869 INFO L124 PetriNetUnfolderBase]: 2086/10190 cut-off events. [2023-11-29 00:52:34,870 INFO L125 PetriNetUnfolderBase]: For 4966/5203 co-relation queries the response was YES. [2023-11-29 00:52:34,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16672 conditions, 10190 events. 2086/10190 cut-off events. For 4966/5203 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 108794 event pairs, 478 based on Foata normal form. 32/9289 useless extension candidates. Maximal degree in co-relation 16656. Up to 1960 conditions per place. [2023-11-29 00:52:34,914 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 78 selfloop transitions, 17 changer transitions 0/159 dead transitions. [2023-11-29 00:52:34,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 159 transitions, 796 flow [2023-11-29 00:52:34,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 00:52:34,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 00:52:34,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1315 transitions. [2023-11-29 00:52:34,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7024572649572649 [2023-11-29 00:52:34,917 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1315 transitions. [2023-11-29 00:52:34,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1315 transitions. [2023-11-29 00:52:34,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:52:34,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1315 transitions. [2023-11-29 00:52:34,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 73.05555555555556) internal successors, (1315), 18 states have internal predecessors, (1315), 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) [2023-11-29 00:52:34,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 104.0) internal successors, (1976), 19 states have internal predecessors, (1976), 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) [2023-11-29 00:52:34,924 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 104.0) internal successors, (1976), 19 states have internal predecessors, (1976), 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) [2023-11-29 00:52:34,924 INFO L175 Difference]: Start difference. First operand has 126 places, 108 transitions, 407 flow. Second operand 18 states and 1315 transitions. [2023-11-29 00:52:34,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 159 transitions, 796 flow [2023-11-29 00:52:34,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 159 transitions, 772 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-11-29 00:52:34,932 INFO L231 Difference]: Finished difference. Result has 134 places, 106 transitions, 400 flow [2023-11-29 00:52:34,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=400, PETRI_PLACES=134, PETRI_TRANSITIONS=106} [2023-11-29 00:52:34,933 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 28 predicate places. [2023-11-29 00:52:34,933 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 106 transitions, 400 flow [2023-11-29 00:52:34,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 70.23076923076923) internal successors, (913), 13 states have internal predecessors, (913), 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) [2023-11-29 00:52:34,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:34,934 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:52:34,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 00:52:35,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 00:52:35,134 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-29 00:52:35,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:35,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1885854751, now seen corresponding path program 1 times [2023-11-29 00:52:35,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:52:35,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740466852] [2023-11-29 00:52:35,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:52:35,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:52:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:52:35,152 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 00:52:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:52:35,171 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 00:52:35,171 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 00:52:35,171 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (9 of 10 remaining) [2023-11-29 00:52:35,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2023-11-29 00:52:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2023-11-29 00:52:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 10 remaining) [2023-11-29 00:52:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2023-11-29 00:52:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2023-11-29 00:52:35,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2023-11-29 00:52:35,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2023-11-29 00:52:35,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2023-11-29 00:52:35,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2023-11-29 00:52:35,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 00:52:35,173 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:52:35,178 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 5 thread instances [2023-11-29 00:52:35,179 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 00:52:35,249 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-29 00:52:35,251 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-29 00:52:35,252 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-29 00:52:35,253 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-29 00:52:35,254 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-29 00:52:35,255 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-29 00:52:35,267 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 12:52:35 BasicIcfg [2023-11-29 00:52:35,267 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 00:52:35,267 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 00:52:35,267 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 00:52:35,268 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 00:52:35,268 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:52:19" (3/4) ... [2023-11-29 00:52:35,270 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 00:52:35,271 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 00:52:35,272 INFO L158 Benchmark]: Toolchain (without parser) took 16962.50ms. Allocated memory was 167.8MB in the beginning and 1.1GB in the end (delta: 960.5MB). Free memory was 132.8MB in the beginning and 468.0MB in the end (delta: -335.2MB). Peak memory consumption was 626.1MB. Max. memory is 16.1GB. [2023-11-29 00:52:35,272 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory is still 74.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:52:35,272 INFO L158 Benchmark]: CACSL2BoogieTranslator took 403.58ms. Allocated memory is still 167.8MB. Free memory was 132.8MB in the beginning and 113.0MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 00:52:35,273 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.55ms. Allocated memory is still 167.8MB. Free memory was 113.0MB in the beginning and 111.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:52:35,273 INFO L158 Benchmark]: Boogie Preprocessor took 27.84ms. Allocated memory is still 167.8MB. Free memory was 111.0MB in the beginning and 109.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:52:35,273 INFO L158 Benchmark]: RCFGBuilder took 354.94ms. Allocated memory is still 167.8MB. Free memory was 109.7MB in the beginning and 95.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-29 00:52:35,274 INFO L158 Benchmark]: TraceAbstraction took 16125.72ms. Allocated memory was 167.8MB in the beginning and 1.1GB in the end (delta: 960.5MB). Free memory was 94.2MB in the beginning and 469.0MB in the end (delta: -374.8MB). Peak memory consumption was 588.4MB. Max. memory is 16.1GB. [2023-11-29 00:52:35,274 INFO L158 Benchmark]: Witness Printer took 3.73ms. Allocated memory is still 1.1GB. Free memory was 469.0MB in the beginning and 468.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:52:35,276 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory is still 74.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 403.58ms. Allocated memory is still 167.8MB. Free memory was 132.8MB in the beginning and 113.0MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.55ms. Allocated memory is still 167.8MB. Free memory was 113.0MB in the beginning and 111.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.84ms. Allocated memory is still 167.8MB. Free memory was 111.0MB in the beginning and 109.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 354.94ms. Allocated memory is still 167.8MB. Free memory was 109.7MB in the beginning and 95.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 16125.72ms. Allocated memory was 167.8MB in the beginning and 1.1GB in the end (delta: 960.5MB). Free memory was 94.2MB in the beginning and 469.0MB in the end (delta: -374.8MB). Peak memory consumption was 588.4MB. Max. memory is 16.1GB. * Witness Printer took 3.73ms. Allocated memory is still 1.1GB. Free memory was 469.0MB in the beginning and 468.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - DataRaceFoundResult [Line: 726]: Data race detected [2023-11-29 00:52:35,322 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-29 00:52:35,323 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-29 00:52:35,324 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-29 00:52:35,325 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-29 00:52:35,325 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-29 00:52:35,326 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-29 00:52:35,364 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-29 00:52:35,365 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-29 00:52:35,366 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-29 00:52:35,367 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-29 00:52:35,367 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-29 00:52:35,368 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not Data race detected The following path leads to a data race: [L710] 0 intptr_t x; VAL [x=0] [L719] 0 pthread_t t[5 + 1]; VAL [\old(argc)=50, argc=50, argv={52:49}, t={3:0}, x=0] [L721] 0 x = 0 VAL [\old(argc)=50, argc=50, argv={52:49}, t={3:0}, x=0] [L723] 0 intptr_t i = 1; VAL [\old(argc)=50, argc=50, argv={52:49}, i=1, t={3:0}, x=0] [L723] COND TRUE 0 i <= 5 VAL [\old(argc)=50, argc=50, argv={52:49}, i=1, t={3:0}, x=0] [L724] FCALL, FORK 0 pthread_create(t + i, 0, thread, (void *)i) VAL [\old(argc)=50, arg={0:1}, argc=50, argv={52:49}, i=1, t={3:0}, x=0] [L712] 1 intptr_t thread = (intptr_t)arg; VAL [arg={0:1}, arg={0:1}, thread=1, x=0] [L723] 0 i++ VAL [\old(argc)=50, arg={0:1}, arg={0:1}, argc=50, argv={52:49}, i=2, t={3:0}, thread=1, x=0] [L723] COND TRUE 0 i <= 5 VAL [\old(argc)=50, arg={0:1}, arg={0:1}, argc=50, argv={52:49}, i=2, t={3:0}, thread=1, x=0] [L724] FCALL, FORK 0 pthread_create(t + i, 0, thread, (void *)i) VAL [\old(argc)=50, arg={0:1}, arg={0:2}, argc=50, argv={52:49}, i=2, t={3:0}, thread=1, x=0] [L723] 0 i++ VAL [\old(argc)=50, arg={0:1}, arg={0:2}, argc=50, argv={52:49}, i=3, t={3:0}, thread=1, x=0] [L723] COND TRUE 0 i <= 5 VAL [\old(argc)=50, arg={0:1}, arg={0:2}, argc=50, argv={52:49}, i=3, t={3:0}, thread=1, x=0] [L724] FCALL, FORK 0 pthread_create(t + i, 0, thread, (void *)i) VAL [\old(argc)=50, arg={0:1}, arg={0:2}, argc=50, argv={52:49}, i=3, t={3:0}, thread=1, x=0] [L723] 0 i++ VAL [\old(argc)=50, arg={0:1}, arg={0:2}, argc=50, argv={52:49}, i=4, t={3:0}, thread=1, x=0] [L723] COND TRUE 0 i <= 5 VAL [\old(argc)=50, arg={0:1}, arg={0:2}, argc=50, argv={52:49}, i=4, t={3:0}, thread=1, x=0] [L724] FCALL, FORK 0 pthread_create(t + i, 0, thread, (void *)i) VAL [\old(argc)=50, arg={0:1}, arg={0:2}, argc=50, argv={52:49}, i=4, t={3:0}, thread=1, x=0] [L723] 0 i++ VAL [\old(argc)=50, arg={0:1}, arg={0:2}, argc=50, argv={52:49}, i=5, t={3:0}, thread=1, x=0] [L723] COND TRUE 0 i <= 5 VAL [\old(argc)=50, arg={0:1}, arg={0:2}, argc=50, argv={52:49}, i=5, t={3:0}, thread=1, x=0] [L724] FCALL, FORK 0 pthread_create(t + i, 0, thread, (void *)i) VAL [\old(argc)=50, arg={0:1}, arg={0:2}, argc=50, argv={52:49}, i=5, t={3:0}, thread=1, x=0] [L723] 0 i++ VAL [\old(argc)=50, arg={0:1}, arg={0:2}, argc=50, argv={52:49}, i=6, t={3:0}, thread=1, x=0] [L723] COND FALSE 0 !(i <= 5) VAL [\old(argc)=50, arg={0:1}, arg={0:2}, argc=50, argv={52:49}, i=6, t={3:0}, thread=1, x=0] [L726] 0 x < 5 + 1 VAL [\old(argc)=50, arg={0:1}, arg={0:2}, argc=50, argv={52:49}, t={3:0}, thread=1, x=0] [L714] 1 x = thread VAL [arg={0:1}, arg={0:2}, thread=1, x=1] [L726] 0 x < 5 + 1 VAL [\old(argc)=50, arg={0:1}, arg={0:2}, argc=50, argv={52:49}, t={3:0}, thread=1, x=1] Now there is a data race on ~x~0 between C: x = thread [714] and C: x < 5 + 1 [726] - UnprovableResult [Line: 721]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 730]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 724]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 75 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.1s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35 IncrementalHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 4 mSDtfsCounter, 35 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=151occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 113 SizeOfPredicates, 0 NumberOfNonLiveVariables, 74 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 1/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 82 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.4s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 35 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 170 IncrementalHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 13 mSDtfsCounter, 170 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=3, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 195 NumberOfCodeBlocks, 195 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 272 SizeOfPredicates, 2 NumberOfNonLiveVariables, 156 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 1/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 5 procedures, 89 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 57 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 188 IncrementalHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 8 mSDtfsCounter, 188 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=263occurred in iteration=4, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 205 NumberOfCodeBlocks, 205 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 272 SizeOfPredicates, 2 NumberOfNonLiveVariables, 156 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 1/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 4 thread instances CFG has 6 procedures, 96 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.2s, OverallIterations: 6, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 170 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 146 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 339 IncrementalHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 17 mSDtfsCounter, 339 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 227 GetRequests, 186 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=296occurred in iteration=4, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 319 NumberOfCodeBlocks, 319 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 333 ConstructedInterpolants, 0 QuantifiedInterpolants, 611 SizeOfPredicates, 8 NumberOfNonLiveVariables, 282 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 1/104 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 5 thread instances CFG has 7 procedures, 103 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.6s, OverallIterations: 7, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 253 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 229 mSDsluCounter, 72 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 48 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 682 IncrementalHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 24 mSDtfsCounter, 682 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 319 GetRequests, 255 SyntacticMatches, 5 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=407occurred in iteration=5, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 471 NumberOfCodeBlocks, 471 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 471 ConstructedInterpolants, 0 QuantifiedInterpolants, 953 SizeOfPredicates, 18 NumberOfNonLiveVariables, 449 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 214/354 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-29 00:52:35,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29bcecc1-00cf-4d8a-8c26-ad2e72d2e228/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE